A machine gun is mounted on an armored car moving with a speed of 20 ms –1 . The gun can point against the direction of motion of car. The muzzle speed of bullet is equal to speed of sound in air i.e., 340 ms –1 . The time difference between bullet actually reaching and sound of firing reaching at a target 544 m away from car at the instant of firing is
Text Solution
Verified by ExpertsThe correct answer is:
B
time to reach sound wave = 
time to reach bullet = 
= 
t = 544 
= 544 × 
= 0.1 sec
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