The mass and diameter of a planet are twice those of earth. The period of oscillation of pendulum on this planet will be (If its second's pendulum on earth)
As we know
Also,
Time period of a ball through tunnel in earth -
- wherein
Radius of earth
acceleration due to gravity
Option 1)
This is incorrect.
Option 2)
This is correct.
Option 3)
This is incorrect.
Option 4)
This is incorrect.
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