Physics Test 93...

A lens behaves as a converging lens in air & a diverging lens in water. The refractive index of material is (μ_water = 4/3)

What should be the value of distance d so that final image is formed on the object itself.

A thin symmetrical double convex lens of power P is cut into three parts, as shown, power of A is

A medium has μ_V = 1.56 & μ_R = 1.44. Find its dispersive power.

A simple microscope has focal length of 5 cm. The magnification for the case final image at least distance of distinct vision is

A Galileo telescope has an objective of focal length 100 cm & magnifying power 50. The distance between the two lenses in normal adjustment will be

A person with defective sight is using a lens having a power of +2D. The lens he is using is

The maximum refractive index of a material, of a prism of apex angle 90°, for which light may be transmitted by

A thin beam of light, incident on a transparent sphere from air, get focussed on opposite surface of the sphere then refractive index of the material of the sphere is

Find the apparent depth of the object seen by observer A (in the figure shown)

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