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The time period of a second’s pendulum i...

The time period of a second’s pendulum is 2 sec. The spherical bob which is empty from inside has a mass of 50 gm. This is now replaced by another solid bob of same radius but having different mass of 100 gm. The new time period will be

A

4sec

B

1sec

C

2sec

D

8sec

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Knowledge Check

  • A second's pendulum has a hollow spherical bob of mass 25xx10^(-3)kg . It is replaced by another solid bob of same radius but of mass 50xx10^(-3)kg . Then the new time period will be

    A
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    D
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  • The time period of a seconds pendulum on a planet, whose mass is twice that of the earth and radius is equal to the diameter of the earth, will be

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    2.828 s
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    3.742 s
    C
    1.414 s
    D
    2 s

  • The time period of oscillation of a bar magnet suspended horizontaliy along the magnetic meridian is T_(0) . If this magnet is replaced by another magnet of the same size and pole strength but with double the mass, the new time period will be

    A
    `T_(0)/2`
    B
    `T_(0)/sqrt(2)`
    C
    `sqrt(2)T_(0)`
    D
    `2T_(0)`

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