Ray Optics and Optical Instruments

Related Questions

• When light travels from one medium to the other of which the refractive index is different, then which of the following will change

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• In an astronomical telescope, the focal lengths of two lenses are 180 cm and 6 cm respectively. In normal adjustment, the magnifying power will be

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• A prism of refracting angle $60^o$ is made with a material of refractive index $\mu$. For a certain wavelength of light, the angle of minimum deviation is $30^o$. For this, wavelength the value of refractive index of the material is

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• When diameter of the aperture of the objective of an astronomical telescope is increased, its

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• At sun rise or sunset, the sun looks more red than at mid-day because

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