Ray Optics and Optical Instruments

Related Questions

• When light of wavelength $\lambda $ is incident on an equilateral prism kept in its minimum deviation position, it is found that the angle of deviation equals the angle of the prism itself. The refractive index of the material of the prism for the wavelength $\lambda $ is, then

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• A point object O is placed in front of a glass rod having spherical end of radius of curvature 30 cm. The image would be formed at

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• A candle placed 25 cm from a lens, forms an image on a screen placed 75 cm on the other end of the lens. The focal length and type of the lens should be

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• The focal length of the objective lens of a compound microscope is

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• The focal lengths for violet, green and red light rays are ${{f}_{V}},{{f}_{G}}$and ${{f}_{R}}$ respectively. Which of the following is the true relationship

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