1.

A man stands in front of a hillock and fires a gun. He hears an echo after 1.5 sec. The distance of the hillock from the man is (velocity of sound in air is 330 m/s) [EAMCET (Eng.) 1998; CPMT 2000]

A. 220 m  
B. 247.5 m
C. \[{{n}_{1}}\tilde{\ }{{n}_{2}}\]
D. 292.5 m
Answer» C. \[{{n}_{1}}\tilde{\ }{{n}_{2}}\]


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