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The twinkling effect of star light is du...

The twinkling effect of star light is due to

A

total internal reflection

B

high dense matter of star

C

constant burning of hydrogen in the star

D

the fluctuating apparent position of the star being slightly different from the actual position of the star

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The correct Answer is:
D
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CHHAYA PUBLICATION-REFRACTION OF LIGHT-EXERCISE MULTIPLE CHOICE QUESTION
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  2. To a fish under water, viewing obliquely a fisherman standing on the b...

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  3. A transparent cube of 0.21m edge contains a small air bubble. Its appa...

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  4. A lens of refractive index 1.5 is kept in a medium of refractive index...

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  5. If a ray of light is incident normally on any face of an equilateral g...

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  6. A ray of light is passed from an optically denser medium to a rearer m...

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  7. Critical angle depends on

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  8. A ray of light is incident normally on one face of a right angled isos...

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  9. Light rays from a point source situated at a depth of h below water ca...

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  10. How does the surface of water appear to the eye of an observe inside w...

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  11. A fish looking up through the water see the outside world, contained i...

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  12. When a light ray travels from one medium to another and gets refracted...

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  13. The length of a day due to atmospheric refraction

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  14. The twinkling effect of star light is due to

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  15. The refractive angle of a prism is 60^(@) . If the prism is immersed ...

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  16. A ray of light passes through an isosceles triangle such that the angl...

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  17. The refractive index of a prism is sqrt(2) and its refractive angle is...

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  18. A ray of light PQ is incident on the face of an isosceles glass prism ...

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  19. Angle of deviation for a thin prism of refractive index 1.5 is 4^(@) f...

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  20. A thin prism of angle 15^(@) made of glass of refractive index mu(1) =...

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