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Young's modulus of a string is 0.5 x 10^...

Young's modulus of a string is `0.5 x 10^9 Pa`, length of wire without any force applied is 0.1m and area is `0.04 x 10-4 m^2`. If this wire is stretched by a length of 0.001 m. The energy stored in this string is transfered to a particle of mass 20g. Find speed of this particle

A

1 m/s

B

0.5 m/s

C

2 m/s

D

0.25 m/s

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-PHYSICS SECTION B
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