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प्रश्न
Name the phenomenon responsible in the following case:
Twinkling of stars
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उत्तर
Refraction of light
संबंधित प्रश्न
Explain the term absolute refractive index of a medium and write an expression to relate it with the speed of light in vacuum.
Draw a ray diagram to show the refraction of a monochromatic ray through a prism when it suffers minimum deviation
The speed of light in glass is 2 × 105 km/s. What is the refractive index of glass?
Light passes through a rectangular glass slab and through a triangular glass prism. In what way does the direction of the two emergent beams differ and why?
A total reflecting right angled isosceles prism can be used to deviate a ray of light through:
(a) 30° (b) 60° (c) 75° (d) 90°.
-
- the angle of refraction and
- the angle of deviation for the ray?
Name the phenomenon responsible in the following case:
Apparent bending of a stick in water
Why is the colour red used as a sign of danger?
During sunset and sunrise, the sun is seen when it is slightly below the horizon. Give reason.
