There are {\n} elastic balls placed on a smooth horizontal plane. The masses of the balls are {\m}, \frac{ {\m}}{2}, \frac{ {\m}}{2^2}, . . . { {\m}}/{2^{ {\n}-1}} respectively. If the first ball hits the second ball with velocity {\v}_0, then the velocity of the {\n}^{\text{th }} ball will be,

Correct Answer is : (43)n−1v0

WBJEE 2023 Physics & Chemistry Solved Paper

Question : 73 of 80

Marks: +1, -0

There are n elastic balls placed on a smooth horizontal plane. The masses of the balls are m,‌

,‌

,...‌

2n−1

respectively. If the first ball hits the second ball with velocity v0, then the velocity of the n‌th ‌ ball will be,

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