An Incident Wave on a light string is travelling to the right as shown in Fig -6

Question

An Incident Wave on a light string is travelling to the right as shown in Fig -6 The string is firmly attached to the wall. Choose from the answers provided below. Fig -6 Travelling pulse on a string Question: When it strikes the wall, will the pulse be reflected with amplitude in the positive or negative direction? a) positive direction. b) negative direction 13) A candle 4 85 cm tall is 39 2 cm to the left of a plane mirror Where is the image formed by the mirror, what is the height of the image formed. and is the image real or virtual? Choose from the answers provided below a) 39.2 cm to the left of the mirror, image height = 2.0 cm, image is real, b) 32 cm to behind the mirror, image height = 6.0 cm, image is virtual, c) 39.2 cm behind the mirror, image height = 4_85 cm, image is virtual, or d) 392 cm behind the mirror, image height = 2.43 cm, image is real

Explanation / Answer

13) answer :C

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