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Critical angle of light passing from gla...

Critical angle of light passing from glass to water is minimum for

A

red colour

B

green colour

C

yellow colour

D

violet colour

Text Solution

Verified by Experts

The correct Answer is:
D
`mu_gsinC=mu_omegasin90^@`
`sinC=(mu_omega)/(mu_g)=(1)/(._omegamu_g)`
`mu` is maximum for violet colour, hence critical angle is minimum for violet colour.
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CP SINGH-REFRACTION OF LIGHT BY PLANE SURFACES-Exercises
  1. When a ray is refracted from one medium into another, the wavelegths c...

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  2. A ray of light travelling inside a rectangular glass block (mu=sqrt2) ...

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  3. Critical angle of light passing from glass to water is minimum for

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  4. Critical angle is minimum when a light ray passes from

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  5. A ray of light from a denser medium strikes a rarer medium at angle of...

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  6. A ray of light travelling in a transparent medium falls on a surface s...

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  7. A diver inside water sees the setting sun at (sin^-1.(3)/(4)=49^@) (mu...

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  8. A, B and C are three optical media of respective critical angles C1, C...

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  9. A ray of light travelling in water is incident on its surface open to ...

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  10. White light is incident on the interface of glass and air as shown in ...

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  11. Figure shows a mixture of blue, green and red coloured rays incident n...

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  12. An air masked eye placed inside water refractive index, mu sees the ou...

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  13. A fish looking up through the water sees the outside world contained i...

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  14. A point source of light is placed 4m below the surface of a liquid of ...

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  15. A diver in a lake wants to signal his distress to a person sitting on ...

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  16. A light beam is travelling from Region I to IV (figure). The refractiv...

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  17. A transparent solid cylindrical rod has a refractive index of (2)/(sqr...

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  18. Light enters at an angle of incidence in a transparent rod of refracti...

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  19. When light is incident on a medium at angle i and refracted into a sec...

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  20. A rectangular slab ABCD, of refractive index n1 , is immersed in water...

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