JEE Main 8 Apr 2019 Paper 1 Solved Paper

Section: Physics

Question : 6 of 90

Marks: +1, -0

A boy's catapult is made of rubber cord which is 42 cm long, with 6 mm diameter of cross-section and of negligible mass. The boy keeps a stone weighing 0.02 kg on it and stretches the cord by 20 cm by applying a constant force. When released, the stone flies off with a velocity of 20 ms−1 . Neglect the change in the area of crosssection of the cord while stretched. The Young's modulus of rubber is closest to:

[8 Apr 2019 Shift 1]

106Nm−2
103Nm−2
108Nm−2
104Nm−2

Validate

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