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Critical angle of light passing from gla...

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

A

red

B

green

C

yellow

D

violet

Text Solution

Verified by Experts

The correct Answer is:
B
`C=sin^(-1)((1)/(mu))` `mu` is greatest for voilet `rArr` `C` is minimum for voilet.
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Assertion : Critical angle of light while passing from glass to air is minimum for violet colour. Reason : The wavelength of violet li^ht is greater than that of other colours

Critical angle of light passing from glass to air is least for

Glass has refractive index mu with respect to air and the critical angle for a ray of light going from glass to air is theta . If a ray of light is incident from air on the glass with angle of incidence theta , the corresponding angle of refraction is

RESONANCE-GEOMATRICAL OPTICS -Exercise-1
  1. A convex lens of focal length 25 cm and a concave lens of focal length...

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  2. The dispersion of light in a medium implies that :

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

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  4. A plane glass slab is placed over various coloured letters. The letter...

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  5. A medium has nv = 1.56, nr=1.44. Then its dispersive power is:

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  6. All the listed things below are made of flint glass. Which one of thes...

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  7. Light of wavelenght 4000 A is incident at small angle on a prim of ape...

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  8. A simple microscope has a focal length of 5 cm . The magnification at...

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  9. In a compound microscope, the intermediate image is

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  10. The resolving power of a telesope is more when its objective lens has

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  11. A Galileo telescope has an objective of focal length 100cm and magnif...

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  12. The convex lens is used in-

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  13. The magnifying power of a simple microscope can be increased, if we us...

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  14. The focal length of the objective lens of a compound microscope is

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  15. Resolving power of a microscope depends upon

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  16. An astronomical telescope has an eyepiece of focal-length 5cm. If the ...

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  17. A person with a defective sight is using a lens having a power of +2D....

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  18. The focal lengths of the objective and eye- lens of a microscope are 1...

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  19. If the focal length of objective and eye lens are 1.2 cm and 3 cm resp...

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  20. Find the angle fo deviation (both clockwise and anti-clock wise)suf...

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