Question

Two persons P and Q are standing at a distance of 100 m from a high wall as shown in the given figure. When P gives a clap, the time interval between the two (direct and reflected) sounds heard by Q is 0.2 s. If the speed of sound is 340 m s', then the distance d between P and Q is A. 160 m B. 260 m C. 290 m D. 320 m picture​

Answer 1

132 is the answer

Explanation:

2×100÷v _ d÷v=0.2

200_d÷340=0.2

200_ d = 68

d:200 _ 68 : 132

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