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The plane surface of a plano-convex lens...

The plane surface of a plano-convex lens of focal length f is silvered. It will behave as

A

plane mirror

B

convex mirror of focal lengths 2f

C

concave mirror of focal length `f//2`

D

none of the above

Text Solution

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The correct Answer is:
C
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MOTION-RAY OPTICS-Exercise-1
  1. A convex lens forms a real image on a screen placed at a distance 60 c...

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  2. A plano-convex lens when silvered on the plane side behaves like a con...

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  3. The plane surface of a plano-convex lens of focal length f is silvered...

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  4. A concave lens of focal length 25 cm and a convex lens of focal length...

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  5. Two lenses of power +2.50D and -3.75D are combined to form a compound ...

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  6. Lenses of powers 3D and -5D are combined to from a compound lens. An o...

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  7. An object placed at a distance of a 9cm from the first principal focus...

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  8. A convex lens of Focal length of 40cm is in contact with a concave len...

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  9. An object is put at a distance of 5cm from the first focus of a convex...

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  10. Focal length of convex lens is f. If this lens is cut along parallel t...

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  11. In the figure shown, there are two convex lenses L(1) and L(2) having ...

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  12. What should be the value of distance d so that final image is formed o...

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  13. If the central portion of a convex lens is wrapped in black paper as s...

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  14. Focal length of a convex lens will be maximum for

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  15. A convex lens form a real image of a point object placed on its princi...

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  16. Shift on the principal axis

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  17. When the length of a microscope tube increases, its magnifying power

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  18. In a simple microscope, if the final image is located at infinity then...

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  19. In a simple microscope, if the final image is located at infinity then...

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  20. In astronomical telescope, the final image is formed at

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