Line spectrum is obtained on the screen in the form of lines if the slit in front of the source is a) narrow square b) broad square c) narrow rectangle d) broad rectangle

Line spectrum is obtained on the screen in the form of lines if the slit in front of the source is
a) narrow square b) broad square c) narrow rectangle d) broad rectangle
by

1 Answer

Answer :

c) narrow rectangle
by

Related questions

Distinguish between a narrow spectrum and broad spectrum antibiotic.

Description : Distinguish between a narrow spectrum and broad spectrum antibiotic.

Last Answer : Ans. A narrow spectrum antibiotic works against a limited range of microbes whereas a broad spectrum antibiotic works against a large variety of microbes. 

A biocontrol agent to be a part of an integrated pest management should be (a) species-specific and symbiotic (b) free living and broad spectrum (c) narrow spectrum and symbiotic (d) species-specific and inactive on non-target organisms.

Description : A biocontrol agent to be a part of an integrated pest management should be (a) species-specific and symbiotic (b) free living and broad spectrum (c) narrow spectrum and symbiotic (d) species-specific and inactive on non-target organisms.

Last Answer : (d) species-specific and inactive on non-target organisms.

The following strategy will promote rather than curb emergence of antibiotic resistant micro-organisms: A. Whenever possible use broad spectrum antibiotics B. Prefer a narrow spectrum antibiotic to a broad spectrum one if both are equally effective C. Prefer short and intensive courses of antibiotics D. Use antibiotic combinations for prolonged therapy

Description : The following strategy will promote rather than curb emergence of antibiotic resistant micro-organisms: A. Whenever possible use broad spectrum antibiotics B. Prefer a narrow spectrum ... Prefer short and intensive courses of antibiotics D. Use antibiotic combinations for prolonged therapy

Last Answer : A. Whenever possible use broad spectrum antibiotics

The continuous X-ray spectrum is obtained due to the effect called a) Braking radiation b) Bremsstrahlung c) both a & b d) none of a & b

Description : The continuous X-ray spectrum is obtained due to the effect called a) Braking radiation b) Bremsstrahlung c) both a & b d) none of a & b

Last Answer : b) Bremsstrahlung

In Fraunhofer diffraction pattern for single slit, a central maximum is obtained when angle of diffraction q is equal to zero. What it actually indicates? A. All the diffracted rays are parallel and focused by slit at a single point on screen B. All the diffracted rays are perpendicular and focused by slit at a single point on screen C. The rays are diffracted by the slit in all the directions D. The rays are reflected by the slit

Description : In Fraunhofer diffraction pattern for single slit, a central maximum is obtained when angle of diffraction q is equal to zero. What it actually indicates? A. All the diffracted rays are parallel and focused ... are diffracted by the slit in all the directions D. The rays are reflected by the slit

Last Answer : A. All the diffracted rays are parallel and focused by slit at a single point on screen

Which of the following condition is essential for observing Fraunhofer diffraction? A. Source must be close to slit and screen should be at infinite distance B. Both source and screen must be close to slit C. Source must be at infinity and screen should be close to the slit D. Both source and screen must be at infinity

Description : Which of the following condition is essential for observing Fraunhofer diffraction? A. Source must be close to slit and screen should be at infinite distance B. Both source and screen must be close to ... infinity and screen should be close to the slit D. Both source and screen must be at infinity

Last Answer : D. Both source and screen must be at infinity

When white light is passed through a double slit which of the following statements is TRUE: w) Each of the bright bands is dispersed into a spectrum x) Only the central band is dispersed into a spectrum y) All the bright bands except the central one are dispersed into a spectrum z) Each band has a single color different from its neighboring bands

Description : When white light is passed through a double slit which of the following statements is TRUE: w) Each of the bright bands is dispersed into a spectrum x) Only the central band is dispersed into ... one are dispersed into a spectrum z) Each band has a single color different from its neighboring bands 

Last Answer : ANSWER: Y -- ALL THE BRIGHT BANDS EXCEPT THE CENTRAL ONE ARE DISPERSED INTO THE SPECTRUM

The only series which lies in the visible region of the electromagnetic spectrum is a) Paschen series b) Lyman series c) Balmer series d) Pfund series

Description : The only series which lies in the visible region of the electromagnetic spectrum is a) Paschen series b) Lyman series c) Balmer series d) Pfund series

Last Answer : b) Lyman series

The fact that the spectrum of any element contains wavelengths that exhibit definite regularities was ` utilized in the second half of the _______in identifying different elements. a) 16th century b) 17th century c) 18th century d) 19th century

Description : The fact that the spectrum of any element contains wavelengths that exhibit definite regularities was ` utilized in the second half of the _______in identifying different elements. a) 16th century b) 17th century c) 18th century d) 19th century

Last Answer : d) 19th century

In order to obtain spectrum from the emitted radiation, the atomic gas or vapour must be excited at a) much less than atmospheric pressure b) much high than atmospheric pressure c) atmospheric pressure d) high pressure and temperature

Description : In order to obtain spectrum from the emitted radiation, the atomic gas or vapour must be excited at a) much less than atmospheric pressure b) much high than atmospheric pressure c) atmospheric pressure d) high pressure and temperature

Last Answer : a) much less than atmospheric pressure

Black body radiation spectrum is an example of a) band spectra b) continuous spectra c) discrete spectra d) atomic spectra

Description : Black body radiation spectrum is an example of a) band spectra b) continuous spectra c) discrete spectra d) atomic spectra

Last Answer : b) continuous spectra

significant diffraction of X ray can be obtained A. By a single slit B. By a double slit C. By diffraction D. By Atomic crystal

Description : significant diffraction of X ray can be obtained A. By a single slit B. By a double slit C. By diffraction D. By Atomic crystal

Last Answer : A. By a single slit

The condition for minima in Fraunhofer diffraction for single slit is asinθ = mλWhat is ‘θ’? A. Angle of incidence of incident rays at the slit B. Angle at which diffracted rays strikes the screen C. Angle between slit and screen D. Angle of diffraction at which rays are diffracted at slit

Description : The condition for minima in Fraunhofer diffraction for single slit is asinθ = mλWhat is ‘θ’? A. Angle of incidence of incident rays at the slit B. Angle at which diffracted rays strikes the screen C. Angle between slit and screen D. Angle of diffraction at which rays are diffracted at slit

Last Answer : D. Angle of diffraction at which rays are diffracted at slit

Coherent light of a single frequency passes through a double slit with a separation d, to produce a pattern on a screen as distance D from the slits. What would cause the separation between adjacent minima on the screen to increase? A. A. increase the index of refraction of the medium in which the setup is immersed B. increase the separation d between the slits C. increase the distance D. increase the frequency of the incident light

Description : Coherent light of a single frequency passes through a double slit with a separation d, to produce a pattern on a screen as distance D from the slits. What would cause the separation between adjacent ... d between the slits C. increase the distance D. increase the frequency of the incident light

Last Answer : B. increase the separation d between the slits

Extended source is needed in A. Young's double slit experiment B. Bi prism Experiment C. Newton’s Ring Experiment D. None of them

Description : Extended source is needed in A. Young's double slit experiment B. Bi prism Experiment C. Newton’s Ring Experiment D. None of them

Last Answer : C. Newton’s Ring Experiment

Isoniazid has a very narrow drug spectrum as the active form of the drug specifically interferes with cell wall synthesis in _____ by inhibiting the production of mycolic acid in the cell wall. a. Staphylococcus b. Streptococcus c. Enterococcus d. Mycobacterium

Description : Isoniazid has a very narrow drug spectrum as the active form of the drug specifically interferes with cell wall synthesis in _____ by inhibiting the production of mycolic acid in the cell wall. a. Staphylococcus b. Streptococcus c. Enterococcus d. Mycobacterium

Last Answer : d. Mycobacterium

How will you differentiate between broad gauge and narrow gauge? -Geography

Description : How will you differentiate between broad gauge and narrow gauge? -Geography

Last Answer : Indian railway runs on multiple gauge operations, i.e. broad gauge, metre gauge and narrow gauge. Broad gauge and narrow gauge can be differentiated based on their measurements and the distance they can be used to ... . Running track in broad gauge is 77,347 km, and in narrow gauge, it is 2474 km.

What are Broad Gauge, Metre Gauge and Narrow Gauge in Indian Railway? -General Knowledge

Description : What are Broad Gauge, Metre Gauge and Narrow Gauge in Indian Railway? -General Knowledge

Last Answer : Broad gauge, meter gauge, narrow gauge indicate the width between two rails. The difference in their width is as follows: Broad gauge: 1.676 meters. Narrow gauge: 0.762 meters.

Do deer have a broad or narrow niche?

Description : Do deer have a broad or narrow niche?

Last Answer : Need answer

Deciduous forests have (a) Variety of grasses (b) Broad-leaved trees (c) narrow-leaved trees (d) Variety of crocodiles

Description : Deciduous forests have (a) Variety of grasses (b) Broad-leaved trees (c) narrow-leaved trees (d) Variety of crocodiles

Last Answer : Ans. ((b))

Which of the gauges is used in the hilly areas? A. Narrow Gauge B. Meter Gauge C. Broad Gauge D. Special Gauge

Description : Which of the gauges is used in the hilly areas? A. Narrow Gauge B. Meter Gauge C. Broad Gauge D. Special Gauge

Last Answer : A [Narrow Gauge] Explanation: Narrow gauge is used in the hilly areas.

Which of the following stations has all the three gauges i.e Broad, Metre and Narrow? A. Lucknow B. Chandigarh C. Simla D. Siliguri

Description : Which of the following stations has all the three gauges i.e Broad, Metre and Narrow? A. Lucknow B. Chandigarh C. Simla D. Siliguri

Last Answer : D [Siliguri] Explanation: Siliguri Junction is one of the three railway stations that serve Siliguri in Darjeeling district in the Indian state of West Bengal. The other two stations are: Siliguri Town and New Jalpaiguri.

In the terminology of economics and money demand, the terms M3 and M4 are also known as : a) Short money b) Long money c) Broad money d) Narrow money

Description : In the terminology of economics and money demand, the terms M3 and M4 are also known as : a) Short money b) Long money c) Broad money d) Narrow money

Last Answer : c) Broad money

) In the terminology of economics and money demand, the terms M1 and M2 are also known as : a) Short money b) Long money c) Broad money d) Narrow money

Description : ) In the terminology of economics and money demand, the terms M1 and M2 are also known as : a) Short money b) Long money c) Broad money d) Narrow money

Last Answer : d) Narrow money

A weir, generally, used as a spillway of a dam is (A) Narrow crested weir (B) Broad crested weir (C) Ogee weir (D) Submerged weir

Description : A weir, generally, used as a spillway of a dam is (A) Narrow crested weir (B) Broad crested weir (C) Ogee weir (D) Submerged weir

Last Answer : Answer: Option C

When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as (A) Narrow-crested weir (B) Broad-crested weir (C) Ogee weir (D) Submerged weir

Description : When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as (A) Narrow-crested weir (B) Broad-crested weir (C) Ogee weir (D) Submerged weir

Last Answer : Answer: Option D

Research is Options: A) Data gathering B) Moving from a broad area to a narrow and focused area C) A systematic process of finding the truth D) Data gathering, processing and analysis

Description : Research is Options: A) Data gathering B) Moving from a broad area to a narrow and focused area C) A systematic process of finding the truth D) Data gathering, processing and analysis

Last Answer : C)

The results obtained by the Balmer were formulated, in 1896, by a) Theodore Lyman b) F. S. Brackett c) J.R.Rydberg d) J.J.Balmer

Description : The results obtained by the Balmer were formulated, in 1896, by a) Theodore Lyman b) F. S. Brackett c) J.R.Rydberg d) J.J.Balmer

Last Answer : c) J.R.Rydberg

A three dimensional image is obtained by a)Electron microscope b) Scanning electron microscope c) Magnetic imaging d)None of these

Description : A three dimensional image is obtained by a)Electron microscope b) Scanning electron microscope c) Magnetic imaging d)None of these

Last Answer : b) Scanning electron microscope

Three resistors of resistance R are connected in various ways, which of the following cannot be obtained? a. 3R ohm b. 2R/4 ohm c. R/3 ohm d. 2R/3 ohm

Description : Three resistors of resistance R are connected in various ways, which of the following cannot be obtained? a. 3R ohm b. 2R/4 ohm c. R/3 ohm d. 2R/3 ohm

Last Answer : b. 2R/4 ohm

How many chiral carbon atoms does Tetrachycline A (a broad spectrum antibiotic) have ?

Description : How many chiral carbon atoms does Tetrachycline A (a broad spectrum antibiotic) have ?

Last Answer : How many chiral carbon atoms does Tetrachycline A (a broad spectrum antibiotic) have ?

How many chiral carbon atoms does Tetrachycline A (a broad spectrum antibiotic) have ?

Description : How many chiral carbon atoms does Tetrachycline A (a broad spectrum antibiotic) have ?

Last Answer : How many chiral carbon atoms does Tetrachycline A (a broad spectrum antibiotic) have ?

All the following conditions produce a real or functional deficiency of vitamin K except (A) Prolonged oral, broad spectrum antibiotic therapy (B) Total lack of red meat in the diet (C) The total lack of green leafy vegetables in the diet (D) Being a new born infant

Description : All the following conditions produce a real or functional deficiency of vitamin K except (A) Prolonged oral, broad spectrum antibiotic therapy (B) Total lack of red meat in the diet (C) The total lack of green leafy vegetables in the diet (D) Being a new born infant

Last Answer : Answer : B

The use of prophylactic antibiotics has become commonplace. Which of the following statement(s) is/are true concerning the prophylactic use of antibiotics? a. The appropriate use of prophylactic antibiotics must include the initiation of the agent prior to the surgical procedure b. Continuing the antibiotic into the postoperative period has led to improved results in antibiotic prophylaxis c. The prophylactic administration of broad-spectrum agents (third-generation cephalosporins) has been shown to be particularly advantageous d. The topical use of antimicrobial agents is of no advantage in the prophylactic setting

Description : The use of prophylactic antibiotics has become commonplace. Which of the following statement(s) is/are true concerning the prophylactic use of antibiotics? a. The appropriate use of prophylactic ... d. The topical use of antimicrobial agents is of no advantage in the prophylactic setting

Last Answer : Answer: a Intravenous administration of an antibiotic is clearly indicated for patients undergoing clean contaminated operations. These antibiotics should be administered prior to surgery ... of antimicrobial agents is equivalent to the administration of intravenous antimicrobial agent antibiotics

A diabetic develops a severe perineal infection with skin necrosis, subcutaneous crepitance, and drainage of a thin, watery, grayish and foul-smelling fluid. Management should consist of: a. Gram stain of the fluid, which will likely demonstrate multiple bacteria including predominantly gram-positive rods b. A CT scan is indicated in a stable patient to define the extent of the disease c. Broad spectrum antibiotics followed with prompt extensive debridement is indicated d. A safe guideline is to resect infected necrotic tissue so that a several centimeter margin of grossly normal, healthy tissue can be achieved e. A colostomy is of little benefit in this situation

Description : A diabetic develops a severe perineal infection with skin necrosis, subcutaneous crepitance, and drainage of a thin, watery, grayish and foul-smelling fluid. Management should consist of: a. Gram stain ... normal, healthy tissue can be achieved e. A colostomy is of little benefit in this situation

Last Answer : Answer: a, b, c, d The presence of severe perineal infection (referred to as Fournier gangrene when this process involves the perineum and scrotum in males) is associated with a ... often provides improved wound care and patient management, although it is not invariably a positive outcome

Lidocaine is the preferred antiarrhythmic for emergency control of cardiac arrhythmias following acute myocardial infarction because (a) It has a rapidly developing and titratable antiarrhythmic action (b) It casues little myocardial depression and hypotension (c) It has broad spectrum antiarrhythmic efficacy in atrial as well as ventricular arrhythmias (d) Both (a) and (b)

Description : Lidocaine is the preferred antiarrhythmic for emergency control of cardiac arrhythmias following acute myocardial infarction because (a) It has a rapidly developing and titratable antiarrhythmic action (b) It casues ... efficacy in atrial as well as ventricular arrhythmias (d) Both (a) and (b)

Last Answer : Ans: D

An advantage of bleomycin over most antineoplastic drugs is its (a) Rapid onset of action (b) Lack of toxicity to all normal cells (c) Relative lack of bone marrow toxicity (d) Very broad spectrum of activity (e) Both (a) and (b)

Description : An advantage of bleomycin over most antineoplastic drugs is its (a) Rapid onset of action (b) Lack of toxicity to all normal cells (c) Relative lack of bone marrow toxicity (d) Very broad spectrum of activity (e) Both (a) and (b)

Last Answer : Ans: C

Broad spectrum antibiotics are one which attack (a) Pathogens as well as host (b) A wide range of pathogens (c) Only pathogens (d) Only host

Description : Broad spectrum antibiotics are one which attack (a) Pathogens as well as host (b) A wide range of pathogens (c) Only pathogens (d) Only host

Last Answer : Ans:(b)

Defination of Broad spectrum Antibiotics

Description : Defination of Broad spectrum Antibiotics

Last Answer : Broad spectrum Antibiotics- Antibiotics which are effective against several different types of harmful micro-organisms and thus, capable of curing several infections are called broad spectrum antibiotics Example chloromycetin, Tetracycline .

Broad spectrum anthelmintics include D A. Benzimidazoles B. Triclabendazole C. Organophosphate D. Both a and b

Description : Broad spectrum anthelmintics include D A. Benzimidazoles B. Triclabendazole C. Organophosphate D. Both a and b

Last Answer : Both a and b

A broad-spectrum herbicide in groundnut a). Fluchloralin b). Atrazine c). Alachlor d). 2,4-D

Description : A broad-spectrum herbicide in groundnut a). Fluchloralin b). Atrazine c). Alachlor d). 2,4-D

Last Answer : a). Fluchloralin

Choose the correct statement about tetracyclines: A. Being broad spectrum antibioics they are dependable for empirical treatment of lifethreatening infections B. Currently, they are not the first choice antibiotic for any specific infection C. They reduce stool volume and duration of diarrhoea in cholera D. The are preferred for treatment of anaerobic bacterial infections

Description : Choose the correct statement about tetracyclines: A. Being broad spectrum antibioics they are dependable for empirical treatment of lifethreatening infections B. Currently, they are not the first ... of diarrhoea in cholera D. The are preferred for treatment of anaerobic bacterial infections

Last Answer : C. They reduce stool volume and duration of diarrhoea in cholera

The following statement is not true of sulbactam: A. It is a broad spectrum β-lactamase inhibitor B. It does not augment the activity of ampicillin against bacteria that are sensitive to the latter C. It induces chromosomal β-lactamases D. Combined with ampicillin, it is highly effective against penicillinase producing N. gonorrhoeae

Description : The following statement is not true of sulbactam: A. It is a broad spectrum β-lactamase inhibitor B. It does not augment the activity of ampicillin against bacteria that are sensitive ... β-lactamases D. Combined with ampicillin, it is highly effective against penicillinase producing N. gonorrhoeae

Last Answer : C. It induces chromosomal β-lactamases

The following is/are true of mesalazine: A. It exerts mainly local antiinflammatory action in the lower gut B. It is a broad spectrum antidiarrhoeal drug C. It can be administered as a retention enema D. Both 'A' and 'C

Description : The following is/are true of mesalazine: A. It exerts mainly local antiinflammatory action in the lower gut B. It is a broad spectrum antidiarrhoeal drug C. It can be administered as a retention enema D. Both 'A' and 'C

Last Answer : D. Both 'A' and 'C

The following drug reduces the effect of oral anticoagulants: A. Broad spectrum antibiotic B. Cimetidine C. Aspirin D. Oral contraceptive

Description : The following drug reduces the effect of oral anticoagulants: A. Broad spectrum antibiotic B. Cimetidine C. Aspirin D. Oral contraceptive

Last Answer : D. Oral contraceptive

Choose the antiarrhythmic drug which prolongs action potential, can aggravate atrioventricular block but not heart failure, and has broad spectrum utility in acute as well as chronic, and ventricular as well as supraventricular arrhythmias: A. Quinidine B. Amiodarone C. Mexiletine D. Diltiazem

Description : Choose the antiarrhythmic drug which prolongs action potential, can aggravate atrioventricular block but not heart failure, and has broad spectrum utility in acute as well as chronic, and ventricular as well as supraventricular arrhythmias: A. Quinidine B. Amiodarone C. Mexiletine D. Diltiazem

Last Answer : B. Amiodarone

Lignocaine is the preferred antiarrhythmic for emergency control of cardiac arrhythmias following acute myocardial infarction because: A. It has a rapidly developing and titratable antiarrhythmic action B. It causes little myocardial depression and hypotension C. It has broad spectrum antiarrhythmic efficacy in atrial as well as ventricular arrhythmias D. Both ‘A’ and ‘B’ are correct

Description : Lignocaine is the preferred antiarrhythmic for emergency control of cardiac arrhythmias following acute myocardial infarction because: A. It has a rapidly developing and titratable antiarrhythmic action B. It causes ... atrial as well as ventricular arrhythmias D. Both A' and B' are correct

Last Answer : D. Both ‘A’ and ‘B’ are correct

The following is true of topiramate except: A. It is a broad spectrum antiepileptic drug B. It inhibits the enzyme carbonic anhydrase C. It is used as add-on therapy in refractory partial seizures D. It is not effective in generalized tonic-clonic seizures

Description : The following is true of topiramate except: A. It is a broad spectrum antiepileptic drug B. It inhibits the enzyme carbonic anhydrase C. It is used as add-on therapy in refractory partial seizures D. It is not effective in generalized tonic-clonic seizures

Last Answer : D. It is not effective in generalized tonic-clonic seizures

Choose the correct statement about lamotrigine: A. It is a dopaminergic agonist used in parkinsonism B. It acts by blocking NMDA-type of glutamate receptors C. It is a broad spectrum antiepileptic drug D. It suppresses tonic-clonic seizures, but worsens absence seizures

Description : Choose the correct statement about lamotrigine: A. It is a dopaminergic agonist used in parkinsonism B. It acts by blocking NMDA-type of glutamate receptors C. It is a broad spectrum antiepileptic drug D. It suppresses tonic-clonic seizures, but worsens absence seizures

Last Answer : C. It is a broad spectrum antiepileptic drug

Anungrounded antennanearthe ground a. acts as a single antenna of twice the height b. is unlikely to need a ground screen c. acts as anantennaarray d. must be horizontally polarized

Description : Anungrounded antennanearthe ground a. acts as a single antenna of twice the height b. is unlikely to need a ground screen c. acts as anantennaarray d. must be horizontally polarized

Last Answer : c. acts as anantennaarray