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The image formed by a convex mirror of f...

The image formed by a convex mirror of focal length `30 cm`. is a quarter of the object. What is the distance of the object from the mirror ?

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The correct Answer is:
`- 90 cm`
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PRADEEP-OPTICS-Exercise
  1. A concave mirror produces real image 10 mm tall, of an object 2.5 mm t...

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  2. A square object is placed 15 cm from a convex mirror of radius of cura...

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  3. The image formed by a convex mirror of focal length 30 cm. is a quarte...

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  4. Calculate the distance of an object of height h from a concave mirror ...

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  5. When an object is placed at a distance of 60 cm from a convex spherica...

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  6. An object is placed in front of a concave mirror of radius of curvatur...

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  7. A concave mirror of focal length 20 cm is placed at a distance of 50 c...

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  8. An object is placed 0.4 m from a convex mirror and a plane mirror is ...

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  9. Two plane mirror are inclined to eachother at an angle theta = 70^(@...

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  10. A rod AB = 10 cm in length is placed along the principal axis of a con...

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  11. Size of an object P is four times that of Q. It is required that the s...

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  12. An object is placed at a distance of 36 cm from a convex mirror. A pl...

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  13. A motor car is fitted with a convex driving mirror of focal length 20 ...

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  14. What is the refractive index of a medium in which light travels with a...

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  15. Refractive index of glass w.r.t water is 9//8. What is the speed of li...

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  16. A small ink dot on a paper is seen through s glass slab of thickness 4...

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  17. For total internal reflection, light must travel

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  18. Optical fibers are based on the phenomenon of

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  19. The relation governing refraction of light from rarer to denser medium...

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  20. In the above question, the ralation remains the same whether (A) ima...

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