Question

resultant of the 3 displacement vectors op, pq,qr. where qr=4cm, pq is 6cm and op is 5 cm and angleis 37.​




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Answer 1

Answer:

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Explanation:

Note: When a ray of light enters from a rarer to denser medium light bends. But if the ray light moves from denser to rarer medium light moves away from the normal. Since the speed of light changes as it enters from a rarer to denser medium the frequency of light does not change but its wavelength changes.