Ray Optics and Optical Instruments

Related Questions

• An object is placed 12 cm to the left of a converging lens of focal length 8 cm. Another converging lens of 6 cm focal length is placed at a distance of 30 cm to the right of the first lens. The second lens will produce

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• A telescope has an objective of focal length 50 cm and an eye piece of focal length 5 cm. The least distance of distinct vision is 25 cm. The telescope is focussed for distinct vision on a scale 200 cm away. The separation between the objective and the eye-piece is

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• The path of a refracted ray of light in a prism is parallel to the base of the prism only when the

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• A point object is placed at a distance of $10\,cm$ and its real image is formed at a distance of $20\,cm$ from a concave mirror. If the object is moved by $0.1cm$ towards the mirror, the image will shift by about

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• The minimum magnifying power of a telescope is M, If the focal length of its eye lens is halved, the magnifying power will become

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