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A ray is ihncident at an angle of incide...

A ray is ihncident at an angle of incidence ii on one surface of a prism of small angle A and emerge normally from opposite surface. If the refractive index of the material of prism is `mu.` the angel of incidance I is nearly equal to

A

`A/mu`

B

`(A)/(2mu)`

C

`mu A`

D

`mu A//2`

Text Solution

Verified by Experts

The correct Answer is:
C
`r_2=0,r_1=A`
`mu=(sini_1)/(sinr_2)~~i_1/i_2=i_1/A rArr i_1=muA`
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DC PANDEY ENGLISH-REFRACTION OF LIGHT-Level 1 Objective
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  2. A prism can have a maximum refracting angle of (thetaC=critical angle ...

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  3. A ray is ihncident at an angle of incidence ii on one surface of a pri...

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  4. The refracting angle of a prism is A and refractive index of the mater...

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  5. A prism of refractive index sqrt2 has refractive angle 60^@. In the or...

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  6. The focal length of a combination of two lenses is doubled if the sep...

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  7. A convexo-concave convergent lens is made of glass of refractive index...

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  8. An optical system consists of a thin convex lens of focal length 30 cm...

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  9. In the figure shown, the angle made by the light ray with the normal i...

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  10. For refraction through a small angled prism, the angle of minimum devi...

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  11. A ray of light passes from vaccum into a medium of refractive index n....

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  12. A thin convex lens of focal length 30 cm is placed in front of a plane...

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  13. One side of a glass slab is silvered as shown in the figure. A ray of ...

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  14. A prism has refractive index sqrt((3)/(2)) and refractive angle 90^@. ...

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  15. In figure, an air lens of radius of curvature of each surface equal to...

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  16. A point object is placed at a distance of 12 cm from a convex lens of ...

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  17. An object, a convex lens of focal length 20 cm and a plane mirror are ...

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  18. The prism shown in figure has a refractive index of 1.60 and the angle...

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  19. A prism having refractive index sqrt2 and refractive angle 30^@ has on...

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  20. The image for the converging beam after refraction through the curved ...

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