Ray Optics and Optical Instruments

Related Questions

• Stars are twinkling due to

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• Retina of eye acts like ........ of camera

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• A ray is incident at an angle of incidence $i$ on one surface of a prism of small angle $A$ and emerges normally from the opposite surface. If the refractive index of the material of the prism is $\mu $, the angle of incidence $i$ is nearly equal to

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• An object of height 1.5 cm is placed on the axis of a convex lens of focal length 25 cm. A real image is formed at a distance of 75 cm from the lens. The size of the image will be

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• A normally incident ray reflected at an angle of ${{90}^{o}}$. The value of critical angle is

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