Two oscillating systems; a simple pendulum and a vertical spring-mass-system have same time period of motion on the surface of the Earth. If both are taken to the moon, then-
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(a)
For simple pendulum: $T =2 \pi \sqrt{\frac{\ell}{ g }}$ As g will decrease on moon, time period will increase
For spring mass system : $T=2 \pi \sqrt{\frac{m}{k}}$
It will not change and remains the same
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