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Showing posts with label
NEET 1992
.
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Showing posts with label
NEET 1992
.
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54. The refractive index of the material of a prism is √2 and its refracting angle is 30°. One of the refracting surfaces of the prism is made a mirror inwards. A beam of monochromatic light enters the prism from the mirror surface if its angle of incidence of the prism is ?
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