A ray of light is incident at an angle of 30°on a glass prism of refractive index 1.5. Calculate the angle through which the ray is minimally deviated in the prism. (The medium surrounding the prism is air)
A. 10.5° B. 19.5° C. 21.1° D. 38.9° E. 40.5° Correct Answer: Option A – 10.5° Explanation n = sin i/sin r sin r = 30°/n sin r = 0.51.5 sin r = 0.3333 r = 19.5°; Deviation 30 – 19.5 =...
In the arrangement illustrated below, Y and B are yellow and blue transparent light filters respectively through the filters is?
A. blue B. red C. yellow D. green E. black Correct Answer: Option E – blackTwo mirrors are inclined as shown in the diagram. A ray of light RO strikes the arrangement at O and emerges along PO. The emergent ray has been deviated through?
A. 240° B. 180° C. 120° D. 60° E. 30° Correct Answer: Option B – 180°
The saturation vapour of a liquid depends on its?
A. volume B. temperature C. mass D. density E. pressure Correct Answer: Option B – temperature
Melting ice cools an orange drink far better than the same mass of ice-cold water because?
A. melting ice is lower temperature than ice-cold water B. water has higher specific heat than ice C. ice floats and cools the air above the drink D. ice absorbs latent heat during melting E. ice makes better thermal contact than water Correct Answer: Option D –...Products
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