A travelling microscope is focussed on a mark made on a paper. When a slab of `1.45cm` thickness is placed on the marl, the microscope has to be raise

1 Answer

Answer :

A travelling microscope is focussed on a mark made on a paper. When a slab of `1.45cm` ... the mark again. Calculate the refractive index of glass.

Related questions

Description : While determining the refractive index of a liquid experimentally, the microscope was focussed at the bottom of a beaker, when its reading was 3.965 c

Last Answer : While determining the refractive index of a liquid experimentally, the microscope was focussed at the ... . Find the refractive index of the liquid.

Description : A concave lens is placed in the path of convergent rays. The rays are focussed on the axis 15 cm behind the lens. Where would these rays have been foc

Last Answer : A concave lens is placed in the path of convergent rays. The rays are focussed on the axis 15 cm behind ... lens ? Focal length of the lens is 30 cm.

Description : How big is 45cm?

Last Answer : Need answer

Description : In a cantilever retaining wall without a heel slab (A) Thickness of the stem is kept same throughout (B) Base slab is made 10 cm thicker than the stem (C) Width of the base slab is kept 0.7 time the total height of the wall (D) All the above

Last Answer : Answer: Option D

Description : Mark incorrect option a) RO is a stationary office of the RMS where work paper of the sections attached to it are prepared, checked and placed on record, all forms & bags. b) HRO is stationary office situated ... of RMS Dn c) SRO is situated at the same station as a Mail office. d) None of these

Last Answer : d) None of these

Description : A dielectric slab of thickness `d` is inserted in a parallel plate capacitor whose negative plate is at `x = 0` and positive plate is at `x = 3d`. The

Last Answer : A dielectric slab of thickness `d` is inserted in a parallel plate capacitor whose negative plate ... at fist, then decreases and again increase.

Description : The left face of a one dimensional slab of thickness 0.2 m is maintained at 80°C and the right face is exposed to air at 30°C. The thermal conductivity of the slab is 1.2 W/m.K and the heat transfer co-efficient from the ... temperature of the right face in °C is (A) 77.2 (B) 71.2 (C) 63.8 (D) 48.7

Last Answer : (D) 48.7

Description : The thickness of base slab of a retaining wall generally provided, is (A) One half of the width of the stem at the bottom (B) One-third of the width of the stem at the bottom (C) One fourth of the width of the steam at the bottom (D) Width of the stem at the bottom

Last Answer : Answer: Option D

Description : The width of the flange of a T-beam should be less than (A) One-third of the effective span of the T-beam (B) Distance between the centres of T-beam (C) Breadth of the rib plus twelve times the thickness of the slab (D) Least of the above

Last Answer : Answer: Option D

Description : The effective span of a simply supported slab, is (A) Distance between the centres of the bearings (B) Clear distance between the inner faces of the walls plus twice the thickness of the wall (C) Clear span plus effective depth of the slab (D) None of these

Last Answer : Answer: Option B

Description : The thickness of the topping of a ribbed slab, varies between (A) 3 cm to 5 cm (B) 5 cm to 8 cm (C) 8 cm to 10 cm (D) 12 cm to 15 cm

Last Answer : Answer: Option B

Description : The minimum thickness of a flat slab is taken (A) L/32 for end panels without drops (B) L/36 for end panels without drops (C) L/36 for interior panels without drop (D) All the above

Last Answer : Answer: Option D

Description : The width of the flange of a L-beam, should be less than (A) One-sixth of the effective span (B) Breadth of the rib + four times thickness of the slab (C) Breadth of the rib + half clear distance between ribs (D) Least of the above

Last Answer : Answer: Option D

Description : If the width of a pavement slab is 7.5 m, thickness 20 cm and working stress 1400 kg/cm2 , spacing of 10 mm tie bars for the longitudinal joint, is (A) 10 cm (B) 20 cm (C) 30 cm (D) 40 cm

Last Answer : Answer: Option C

Description : Interior thickness of concrete road slab for design wheel load 6300 kg and permissible flexural stress 21 kg/cm2 , is (A) 17.0 cm (B) 25.5 cm (C) 34.0 cm (D) 42.5 cm

Last Answer : Answer: Option B

Description : If d is the economic designed depth of a slab, the thickness of the cement concrete pavement slab at interior, is kept (A) 1.275 d (B) 1.125 d (C) 0.85 d (D) 0.75 d

Last Answer : Answer: Option C

Description : The ratio of the diameter of reinforcing bars and the slab thickness is (A) 1/4 (B) 1/5 (C) 1/6 (D) 1/8

Last Answer : (D) 1/8

Description : The effective span of a simply supported slab is (a) Distance between the centers of the bearings (b) Clear distance between the inner faces of the walls plus twice he thickness of the slab. (c) Cleat spa plus effective depth of the slab. (d) All the above

Last Answer : (c) Cleat spa plus effective depth of the slab.

Description : In a T-beam, the vertical distance between the bottom of the flange and the centre of the tensile reinforcement is (a) Breadth of flange (b) Thickness of flange (c) Breadth of slab (d) Depth of rib

Last Answer : (d) Depth of rib

Description : The thickness of flange in a T-beam is taken equal to the total thickness of the slab, including cover. (a) True (b) False (c) Not known (d) None of these

Last Answer : (a) True

Description : In a T-beam , the breadth of the rib is equal to the (a) Total thickness of the slab, including cover (b) Width of the portion of the beam in the compression zone (c) Width of the portion of the beam in the compression zone (d) All the above.

Last Answer : (c) Width of the portion of the beam in the compression zone

Description : The portion of the slab which acts monolithically with the beam and which resists the compressive stresses, is called _________of flange of the T-beam (a) Length (b) Breadth (c) Thickness (d) Depth

Last Answer : (b) Breadth

Description : The Maximum diameter steel in slabs should not exceed --------- the total thickness of the slab [ A ] One-half [ B ] One-fourth [ C ] One-eighth [ D ] One-sixteenth

Last Answer : [ C ] One-eighth

Description : Suppose you are travelling in a train. All of a sudden you recognise your old student who is passing without any salutary mark. What will you think in such condition? Options: A) ... modern disrespectful trend in students D) You will introspect in relation to your students for further improvement

Last Answer : You will introspect in relation to your students for further improvement

Description : What is the name of the thin glass plate that is placed on top of a specimen in microscope?

Last Answer : Cover slip

Description : Well rounded or highly focussed?

Last Answer : answer:it depends on what I'm in search for .if I need a doctor for a specialized task (eye, ear, throat doctor) for some sort of infection then obviously I'd go see him. however ... doctors for your particular question but curious what was it you were referring to, if anything in particular?

Description : Novels had explained and focussed on the terrible conditions of urban life under industrial capitalism. Justify. -SST 10th

Last Answer : (i) Industrialisation and Charles Dickens : In the nineteenth century, Europe entered the industrial age. Factories came up, business profits increased and the economy grew. But ... century British novelist wrote extensively about traditional rural communities of England that were fast vanishing.

Description : An internal focussing type surveying telescope, may be focussed by the movement of  (A) Objective glass of the telescope  (B) Convex-lens in the telescope  (C) Concave lens in the telescope  (D) Plano-convex lens in the telescope

Last Answer : (C) Concave lens in the telescope 

Description : In a telescope the object glass of focal length 14 cm, is located at 20 cm from the diaphragm. The focussing lens is midway between them when a staff 16.50 m away is focussed. The focal length of the focussing lens, is (A) 5.24 cm (B) 6.24 cm (C) 7.24 cm (D) 8.24 cm

Last Answer : (C) 7.24 cm

Description : While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is (A) Correctly focussed (B) Not correctly focussed (C) Said to have parallax (D) Free from parallax

Last Answer : (C) Said to have parallax

Description : Which of the following statement(s) is/are correct? (1) Persistence is the term used to describe the duration of phosphorescence. (2) The control electrode is used to turn the electron beam on and off. (3) ... which are focussed into a narrow beam directed at the face of CRT. (4) All of the above. 

Last Answer : All of the above.

Description : A person wears spectates with concave lenses. It means that normally (when not using glasses), the image of distant objects is focussed in his eyes (1) behind the retina (2) in front of the retina (3) on the retina (4) on the blind spot

Last Answer : in front of the retina

Description : 13. A ray of light, incident obliquely on a face of a rectangular glass slab placed in air, emerges from the opposite face parallel to the incident ray. State two factors on which the lateral displacement of the emergent ray depends. [Foreign] -Chemistry-10

Last Answer : Lateral displacement depends on the: angle of incidence, thickness of slab, and refractive index of the material. (any two)

Description : Reinforcement in cement concrete slab of road pavements, is placed (A) Longitudinally (B) Transversely (C) Longitudinally and transversely (D) In the form of welded wire mesh

Last Answer : Answer: Option D

Description : Mark the correct option remittances sent by post a) When a remittance is to be sent by post, the money should be placed in Leather cash bag and cash sealed by treasure. b) The remittance advice and ... he should be required to grant a receipt for the same in treasurer cash book. d) All the above

Last Answer : d) All the above

Description : Mark the correct option a) The Inspector should supply each head, sub or branch office in his sub-division including first class head offices, with a village sorting list (M-52) b) The Village ... boxes are placed and which of these letter-boxes are provided with changeable plates d) All the above

Last Answer : d) All the above

Description : Prior to starting an AC generator prime mover, the voltage regulator cutout switch should be placed in the __________. A. manual position B. bus neutral position C. raise voltage position D. transfer position

Last Answer : Answer: A

Description : Pick out the wrong statement. (A) Seam welding, projection welding & spot welding are the classification of electrical resistance welding (B) Electrode tip in spot welding is of copper and the ... joined are overlapped and placed between two electrodes (D) Mild steel sheet cannot be spot welded

Last Answer : (D) Mild steel sheet cannot be spot welded

Description : A reinforced concrete cantilever porch has thickness t. The main reinforcing steel will be placed (a) At mid-thickness (b) At t/3 from the top (c) Close to the bottom surface (d) Close to the top surface

Last Answer : (d) Close to the top surface

Description : A wealthy wise old woman feared that her daughter was lazy and as a result rather stupid. When the old woman died, her will stipulated that her assets were to be liquidated and a check was to be ... only one envelope had a true statement and that the other two statements were false. The en -Riddles

Last Answer : The daughter should pick envelope 1. Unfortunately she picked envelope 3. Statements 1 and 2 were false, and the only true statement was statement 3. If the check was in envelope 1, that would make statement 1 ... both be true. If the check was in envelope 3, statements 1 and 3 would both be true.

Description : A mark placed on the surface of a sphere is viewed through glass from a position directly opposite. If the diameter of the sphere is `10 cm` and refra

Last Answer : A mark placed on the surface of a sphere is viewed through glass from a position directly opposite. If the ... `1.5`, find the position of the image.

Description : With the selector switches set for R X 10,000 and the leads placed in the proper receptacles, the needle settles on the '150' mark. What is the resistance value between the leads? EL-0047 A. 1500 ohms B. 150,000 ohms C. 1,500,000 ohms D. 1.5 ohms

Last Answer : Answer: C

Description : A cylindrical cable of core radius 1.25cm and impregnated paper insulation of thickness 2.13cm and relative permittivity 3.5. Compute the capacitance of the cable/km (in nF

Last Answer : To calculate the capacitance of the cable per kilometer, you can use the following formula: C = ε * ε0 * A / d where: C is the capacitance of the cable per kilometer (in farads) ε is ... * 10^9 = 644 nF/km So the capacitance of the cable per kilometer would be approximately 644 nanofarads.

Description : A cable of core radius 1.25cm and impregnated paper insulation of thickness 2.13cm and relative permittivity 3.5. Compute the capacitance of the cable/km(in nF) a) 195.7 b) 179.5 c) 157.9 d) 197.5

Last Answer : a) 195.7

Description : Sizing material is incorporated in paper to (A) Impart resistance to penetration by liquids (B) Increase its thickness (C) Increase its flexibility & opacity (D) Increase its brightness

Last Answer : (A) Impart resistance to penetration by liquids

Description : Am I allowed to use a question mark in the title of an MLA format research paper?

Last Answer : Are you in college, or highschool?

Description : Mark the correct option relating to fee for obtain information under RTI act a) Rs 2/- per each page (A4/A3 size paper) created or copied b) Actual charge or cost price of a copy in large size paper ... records no fee for the first hour and a fee Rs5/- for each  subsequent hour  e) All the above

Last Answer : e) All the above

Description : Mark correct option related to preservation period a) Order book of mail office and section is three years b) Work paper of RMS offices and section is eighteen months c) Correspondence related to robberies, theft etc is one year after the case closed. d) All the above are correct

Last Answer : d) All the above are correct

Description : Mark correct option related to packet of regd news paper a) Breach of conditions the packet will not be forwarded but will be returned to sender. b) Sender will be required to pay double deficiency in the ... may do so by paying fresh postage in full on the article. d) All the above are correct

Last Answer : d) All the above are correct

Description : Mark correct option a) The weight of TB should not be exceed 30 Kg weight b) MO check slip printed in red in on white or badami paper c) Registered bundle prepared there are three or more uninsured ... and VP regd article, insured envelope, regd bundle, ins bundle, ordinary &VP MO e) All the above

Last Answer : e) All the above