Question

need help. please answer #9 and 10

9. You want to form an image of a postage stamp double the actual size of the stamp by using a magnifying glass of focal length 30.0 cm. What is the distance of the stamp from the lens? 10. Can sound be polarized? Defend your answer.

Answer 1

9) Conver lens is used in magnifying glas Given: Magnification , M=2= 4 = v=au u Using lens formula tot ar 1 = tutt =) -2 ut v =) U = -30=15cm =) u= 16 cm from the lens 10) Sound waves cannot be polarized, " A polarized wave vibrates in a single plane in space, : sound waves vibrate along thein along their direction propagation, they cannot be polarized.