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A student has obtained a point image of ...

A student has obtained a point image of a distant object using the given convex lens. To find the focal length of the lens, the should measure the distance between the

A

lens and the object only

B

lens and screen only

C

object and image only

D

lens and the object and also between the object and the image.

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MODERN PUBLICATION-REFLECTION AND REFRACTION-EXAMPLE
  1. A student has obtained a point image of a distant object using the giv...

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  2. A concave mirror of focal length 20 cm forms a real image at a distanc...

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  3. A convex mirror used on an automobile has a radius of curvature of 3 m...

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  4. An object 1 cm high is place on the axis and 15 cm from a concave mirr...

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  5. The image formed by a concave mirror is half in size of the object. If...

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  6. An object 5 cm high is placed at a distance of 10 cvm from a convex mi...

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

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  8. Find the position of an object which when placed in front of a concave...

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  9. An object is placed 10 cm from a concave mirror of radius of curvature...

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  10. An object is placed 15 cm from a convex mirror of radius of curvature ...

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  11. A 4.5 cm needle is placed 12 cm away from a convex mirror of focal len...

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  12. What is the speed of light?

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  20. The refractive index of diamond is:

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