Description : A white and smooth surface is – (1) good absorber and good reflector of heat (2) bad absorber and good reflector of heat (3) good absorber and bad reflector of heat (4) bad absorber and bad reflector of heat
Last Answer : (2) bad absorber and good reflector of heat Explanation: Shiny surfaces are poor absorbers of heat radiation and the best reflectors of heat radiation. Black surfaces are the best emitters and best absorber of heat radiation.
Description : A __________ surface has the maximum thermal emissivity out of the following. (A) Black & smooth (B) Black & rough (C) White & smooth (D) White & rough
Last Answer : (B) Black & rough
Description : Ten years old boy complains of itching. On examination, there are mucoid nodules with smooth rounded surface on the limbus, and mucous white ropy mucopurulent conjunctival discharge. He most ... from: a. Trachoma b. Mucopurulent conjunctivitis c. Bulbar spring catarrh d. Purulent conjunctivitis
Last Answer : ANSWER: C
Description : A white and smooth surface is (1) good absorber and good reflector of heat (2) bad absorber and good reflector of heat (3) good absorber and bad reflector of heat (4) bad absorber and bad reflector of heat
Last Answer : bad absorber and good reflector of heat
Description : Dark with white markings, And smooth like a rock. Where learning occurs, I help convey thought. What am I? -Riddles
Last Answer : Blackboard/chalkboard.
Description : A body absorbs heat most if it is – (1) black and rough (2) black and smooth (3) white and rough (4) white and smooth
Last Answer : (1) black and rough Explanation: A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. Another property is roughness. Sand is rough and black and so it is a good absorber.
Description : A body absorbs heat most if it is (1) black and rough (2) black and smooth (3) white and rough (4) white and smooth
Last Answer : black and rough
Description : Ice is slippery when a man walks on it because a.Increase of pressure causes it to melt b.Ice is brittle c.There is no friction d.It is very chill e.Its surface is smooth
Last Answer : a. Increase of pressure causes it to melt
Description : The dark, smooth surface areas of the Moon are known as -General Knowledge
Last Answer : D. Craters are the dark spots on the moon.
Description : What dark smooth plain on the surface of the moon?
Last Answer : Need answer
Description : What is the name of a smooth surface that reflects an image of what is in front of it?
Last Answer : The reflective surface is a mirror. It can be highly polished metal or chromed, the surface of a calm area of water, or a flat glass plate with a silvered back and a protective coating.
Description : From the internal surface to the external surface, the digestive tube wall is made of mucosa (epithelial tissue responsible for the intestinal absorption), submucosa (connective tissue beneath the ... within the abdominal cavity. Digestion System - Image Diversity: histology of the digestive tube
Last Answer : What is the location of the salivary glands in humans?
Description : Stone ware pipes are A. Highly resistant to sulphide corrosion B. Highly impervious C. Hydraulically efficient because of their smooth interior surface D. Especially suited to pressure pipes
Last Answer : ANS: D
Description : When a ray of light falls on a smooth surface and returns to the same medium, it is called?
Last Answer : Reflection of light
Description : When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids? (A) At high fluid velocity (B) At low velocity (C) When fluid flows past a smooth surface (D) None of these
Last Answer : (A) At high fluid velocity
Description : Film condensation is promoted on a/an __________ surface. (A) Oily (B) Coated (C) Clean & smooth (D) Dirty
Last Answer : (C) Clean & smooth
Description : The most conducive surface for dropwise condensation to occur is the __________ surface. (A) Coated (B) Oily (C) Glazed & polished (D) Smooth
Last Answer : (B) Oily
Description : Dropwise condensation is promoted on a/an __________ surface. (A) Glazed (B) Oily (C) Coated (D) Smooth
Description : In the equation of virtual work, following force is neglected (A) Reaction of any smooth surface with which the body is in contact (B) Reaction of a rough surface of a body which rolls on it without ... an axis, fixed in space, around which a body is constrained to turn (D) All of the above
Last Answer : (D) All of the above
Description : Rankine's theory of active earth pressure assumes (A) Soil mass is homogeneous, dry and cohesionless (B) Ground surface is a plane which may be horizontal or inclined (C) Back of the wall is vertical and smooth (D) All the above
Last Answer : Answer: Option D
Description : Which of the following is not a characteristic observed in material failure by fatigue fracture? (A) Plastic deformation of material does not occur (B) Initiation of crack from below the surface does ... (D) Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface
Last Answer : Option B
Description : The statement, regarding the size of stones used at the wearing surface. "The size of a stone used on a road must be in due proportion to the space occupied by a wheel of ordinary dimensions on a smooth ... dimension is mischievous" was made by (A) Telford (B) Macadam (C) Tresguet (D) Sully
Last Answer : Answer: Option B
Description : The most useless aggregate is one whose surface texture is (A) Smooth (B) Granular (C) Glassy (D) Honey combed and porous
Last Answer : (C) Glassy
Description : Pick up the correct statement from the following: (A) According to the petrological characteristics, concrete aggregates are classified as heavy weight, normal weight and light weight (B) According to ... glassy, smooth, granular, rough, crystalline, honey combed and porous (D) All the above
Description : Bitumen paints offer (A) Pleasing surface (B) Hard surface (C) Smooth surface (D) Protective surface
Description : Slate (A) Is a metamorphic rock (B) Splits into thin sheets along its bedding planes (C) Has a smooth surface and contains alumina and silica (D) Possesses good water absorption capacity
Last Answer : Answer: Option A
Description : For constructing a terrazzo floor, Pick up the incorrect statement from the following: (A) A base course is prepared as in cement concrete flooring (B) A 32 mm thick layer of cement concrete ... final grinding is over, oxalic acid mixed with water is spread over and rubbed hard with soft material
Description : The term dispersion describes the process of ∙ A. separating light into its component frequencies ∙ B. reflecting light from a smooth surface ∙ C. the process by which light is absorbed by an uneven rough surface ∙ D. light scattering
Last Answer : A. separating light into its component frequencies
Description : The termdispersion describestheprocessof a.separatinglightinto its componentfrequencies b. reflecting light from a smooth surface c. the process by which light is absorbed by an uneven rough surface d. light scattering
Last Answer : a.separatinglightinto its componentfrequencies
Description : 40 year old lady presented with swelling in the right side of the upper part of the neck below the ear lobule for last 10 years. Swelling is painless and gradually growing. On examination ... diagnosis Options: 1) Lipoma 2) Rhabdomyosarcoma 3) Chronic sialadenitis 4) Mixed parotid tumour
Last Answer : Correct Answer: 4) Mixed parotid tumour
Description : Good oral hygiene and fluoridation is LEAST useful in preventing caries of: A. Pit and fissure B. Smooth surface C. Inaccessible areas
Last Answer : A. Pit and fissure
Description : When you try to seat a crown on a tooth you find a discrepancy of 0.3mm at the margin; you will: A. Reduce inner surface of crown B. Remake a new crown C. Smooth the enamel at the margin D. Hand burnish crown margins
Last Answer : B. Remake a new crown
Description : Why do you polish the teeth before seating of a partial denture: A. To smooth the rough surface B. To minimise the retention of plaque C. To increase the adoptability of occlusal rests
Last Answer : B. To minimise the retention of plaque
Description : .Fluoridation is the adjustment of the fluoride content of a community water supply to optimum levels for caries prevention. Which of the following statement is correct? A. Tooth decay ... in smooth surface caries from in pit and fissures D. Fluoridation increases vulnerability to osteoporosis
Last Answer : C. Greater reduction in smooth surface caries from in pit and fissures
Description : The most accurate way to evaluate the effectiveness of root planning is by: A. Inspect the root surface with an instrument for root smoothness B. Use air for visual inspection C. Activate a ... the appointment for a decrease oedema and bleeding E. Evaluate the soft tissues 10 to 14 days later.
Last Answer : E. Evaluate the soft tissues 10 to 14 days later.
Description : 48. A perfectly elastic body (a) Can move freely (b) Has perfectly smooth surface (c) Is not deformed by any external surface (d) Recovers its original size and shape when the deforming force is removed.
Last Answer : d) Recovers its original size and shape when the deforming force is removed.
Description : Assume a ray of light is incident on a smooth reflecting surface at an angle of incidence of 15 degrees to the normal. What is the angle between the incident ray and the reflected ray?
Last Answer : ANSWER: 30 DEGREES