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A ray incident at a point at an angle of...

A ray incident at a point at an angle of incidence of `60^(@)` enters a glass sphere with refractive index `sqrt(3)` and it is reflected and refracted at the farther surface of the sphere. The angle between the reflected and refracted rays at this surface is:

A

`90^@`

B

`60^@`

C

`70^@`

D

`40^@`

Text Solution

Verified by Experts

The correct Answer is:
A
`sinr=(sini)/mu=(sin60^@)/sqrt(3)=1/2`
`:.r=30^@`
Angle between reflected ray QR and refracted ray QS at the other face =`180^@ -r -60^@`
`180^@ - 30^@ - 60^@=90^@`
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NARAYNA-RAY OPTICS AND OPTICAL INSTRAUMENTS -EXERCISE-2 (H.W)(LENSES & THEIR COMBINATIONS)
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  2. The sun subtends an angle of (1//2)^(@) on earth. The image of sun is ...

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  3. A convex lens forms an image of a distant object at distance of 20 cm ...

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  4. A slide projector gives magnification of 10. If it projects a slide of...

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  5. The radius of curvature of a thin planoconvex lens is 10 cm and the re...

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  6. The graph between object distance u and image distance v for a lens gi...

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  7. In the displacement method a conves lens is placed in between an objec...

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  8. A convex lens makes a real image 4 cm long on a screen. When the lens ...

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  9. A convex lens of focal length 50 cm, a concave lens of focal length 50...

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  10. Arrange the following combinations in the increasing order of focal le...

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  11. The image of an object, formed by a plano-convex lens at a distance of...

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  12. The radius of curvature of the convex surface of a planoconvex lens is...

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  13. An equiconcave lens having radius of curvature of each surface 20 cm h...

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  14. If R(1) and R(2) are the radii of curvature of double convex lens made...

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  15. A concave lens of glass, refractive index 1.5 has both surfaces of sam...

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  16. A thin equi-convex lens is made of glass of refractive index 1.5 and i...

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  17. A convex Lens of focal Length "0.15m" is made of refractive "(3)/(2)" ...

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  18. A diverging lens of focal length 10 cm having refractive index 1.5 is ...

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  19. A plano convex lens a thickness of 4 cm. Its radius of curvature is 20...

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  20. Two equi convex lenses each of focal lengths 20 cm and refractive inde...

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