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A man is standing in aroom of length 20m...

A man is standing in aroom of length 20m and height 3m at a distance 5m from one wall. On the facing wall a mirror is hanging. Find the minimum size of mirror required in which man will be able to see complete height of wall behind him.

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PHYSICS GALAXY - ASHISH ARORA-GEOMETRICAL OPTICS-Unsolved Numerical Problems
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  11. A ray of light is incident on the left vertical face of glass cube of ...

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  13. In an isosceles prism of prism angle 45^(@), it is found that when the...

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  14. An astronomical telescope with objective of focal length 100 cm and ey...

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  15. Figure shows a right angled prism ABC having refractive mu(g)=(3)/(2) ...

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  17. A ray of light strikes a glass slab of thickness t. (i) Prove that i...

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  18. A plano-convex lens has thickness 4cm. When places on a horizontal tab...

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  19. An image Y is formed of a point object x by a lens whose optic axis is...

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  20. A thin plano-convex lens.of focal length f is split into two halves : ...

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