Ray Optics and Optical Instruments

Related Questions

• The focal lengths of the lenses of an astronomical telescope are 50 cm and 5 cm. The length of the telescope when the image is formed at the least distance of distinct vision is

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• Two plane mirrors are at right angles to each other. A man stands between them and combs his hair with his right hand. In how many of the images will he be seen using his right hand

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• The image formed by a convex mirror of focal length $30cm$ is a quarter of the size of the object. The distance of the object from the mirror is

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• Which of the following colours suffers maximum deviation in a prism

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• In a compound microscope magnification will be large, if the focal length of the eye piece is

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