11.In the figure PQ is parallel to MN .If KP/PM=5/11 and KN=20cm then find the value of KQ .
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Step-by-step explanation:
Why does a ray of light while passing through a prism, bend towards its base? Solution : When a ray of light passes through a prism, it under goes refraction twice. ... Second time from denser to rarer medium, i.e., glass to air, it bends from the normal, i.e., towards the base of the prism.
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