Question bank/JEE Main/Physics

A rubber cord has a cross-section area 1 cm^2 and natural
length of [IMAGE] It is stretched by
[IMAGE] to fire a small object of
mass[IMAGE]. If the Young's modulus (Y) is
[IMAGE] Speed acquired by the object in (m/s) is 2n.
Find n. Assume Hook's law is valid and neglect gravity.,d jcj dh Mksjh dk vuqçLFk dkV kjk çkIr
osx (m/s) esa½2n. nKkr djsaA ekfu,sa fd gqd

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v = 10^3 × 10^-2
v = 10.00 m/s

Source: Grass-G / Ph-27 Physics paper 2 15 Jan.docx