JEE Main 9 Jan 2019 Shift 1 Solved Paper

Section: Physics

Question : 21 of 90

Marks: +1, -0

A heavy ball of mass M is suspended from the ceiling of a car by a light string of mass m (m ≪ M). When the car is at rest, the speed of transverse waves in the string is 60 ms–1. When the car has acceleration a, the wave-speed increases to 60.5 ms–1. The value of a, in terms of gravitational acceleration g, is closest to :

[9-Jan-2019 Shift 1]

g
5
g
20
g
10
g
30

Validate

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