Ray Optics and Optical Instruments

Related Questions

• From which source a continuous emission spectrum and a line absorption spectrum are simultaneously obtained

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• The light ray is incidence at angle of 60° on a prism of angle 45°. When the light ray falls on the other surface at 90°, the refractive index of the material of prism $\mu $ and the angle of deviation $\delta $ are given by

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• Monochromatic light of frequency $5\times {{10}^{14}}$Hz travelling in vacuum enters a medium of refractive index 1.5. Its wavelength in the medium is

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• The radius of the convex surface of plano-convex lens is 20 cm and the refractive index of the material of the lens is 1.5. The focal length of the lens is

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• The spectrum obtained from an electric lamp or red hot heater is

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