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प्रश्न
Why does the sun appear bigger during sunset or sunrise?
Explain the following:
Why does Sun appear bigger, during sunrise or sunset?
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उत्तर
During sunset or sunrise, the rays of light from the sun travel through a long distance through air. Thus, the apparent image of the sun is formed closer to the eye, which in turn appears bigger.
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संबंधित प्रश्न
When a ray of light travels from air to glass slab and strikes the surface of separation at 90°, then it …………….
(a) bends towards normal
(b) bends away from normal
(c) passes unbent
(d) passes in zigzag way
Choose the correct alternative and rewrite the following sentence.
A ray of light strikes the glass slab at an angle of 50°. What is the angle of incidence?
Draw the diagram given below and clearly show the path taken by the emergent ray.
How must light travel out of a substance if it is not going to be refracted?
Fill in the blank to complete the following sentence:
When light travels from a rarer to a denser medium, it bends ...........
The critical angle for glass-air interface is :
In the diagram alongside a ray of light, PQ is incident normally on one face AB of an equilateral glass prism. What is the angle of incidence at the faces AB and AC?
The diagram shows the path of a ray of light through a rectangular glass block placed in a liquid of uniform density.
Show with the help of a ray diagram the path of the ray when incident ray normally falls on the first surface of the glass block and passes through the block and the liquid.
Calculate the velocity of light in a glass block of refractive index 1.5. (Velocity of light in air = 3 × 108 m/s)
