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Two beams of red and violet colours re m...

Two beams of red and violet colours re mde to pass separaterly through a prism (angle of prism is `60^@`).In the position of minimum deviation,the angle of refraction will be

A

`30^@` for both the colours

B

greater for the violet colour

C

greater for the red colour

D

equal but not `30^@` for both the colours.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. A rectangular glass slab ABCD of refractive index n1 is immersed in wa...

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  2. An observer can see through a pin-hole the top end of a thin rod of he...

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  3. Two beams of red and violet colours re mde to pass separaterly through...

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  4. A ray OP of monochromatic light is incident on the face AB of prism AB...

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  5. Which of the following forms (s) a virtual and erect image fo all posi...

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  6. A spherical surface radius of curvatue R seprates air (refractive inde...

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  7. A point object is placed at the centre of a glass sphere of radius 6 c...

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  8. The graph between object distance u and image distance v for a lens is...

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  9. A convex lens A of focal length 20 cm and a concave lens B of focal le...

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  10. The size of the image of an object,which is at infinity, as formed by ...

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  11. A convergeing lens is used to form an image on a screen.When the upper...

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  12. A point object is placed at a distance of 20 cmA point object is place...

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  13. A biconvex lens of focal length 15 cm is in front of a plane mirror.Th...

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  14. A concave lens of glass, refractive index 1.5 ,has both surfaces of th...

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  15. A double convex lens made from a material of refractive index mu1 is i...

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  16. A convex lens is in contact with concave lens .The magnitude of the ra...

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  17. A hollow doublew concave lens is made of very thin transparent materia...

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  18. A biconvex of focal length forms a circular image of radius r of sun ...

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  19. A real image of a distant object is formed by a plano-convex lens on i...

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  20. A ray of light passes through an equilateral glass prism,such that ang...

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