JEE PYQ: Motion In Two Dimensions Question 21
Question 21 - 2019 (10 Jan Shift 1)
Two guns A and B can fire bullets at speeds 1 km/s and 2 km/s respectively. From a point on a horizontal ground, they are fired in all possible directions. The ratio of maximum areas covered by the bullets fired by the two guns, on the ground is:
(a) 1:16 (b) 1:2 (c) 1:4 (d) 1:8
Show Answer
Answer: (a)
Solution
$A \propto R^2 \propto u^4$. $A_1/A_2 = (1/2)^4 = 1/16$.
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