Length of a seconds pendulum is approximately:

9.9 cm

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99.9 cm

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99 cm

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999 cm

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Solution

The correct option is B
99.9 cm

Explanation to Correct Option:
Option (B):
A second pendulum is a pendulum whose period is precisely two seconds.
Its frequency is half a hertz (Hz).
Its approximate length is 99.9 cm or nearly 1 meter.
Hence, option (B) is the correct answer.

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Length of a seconds pendulum is approximately:

The correct option is B 99.9 cmExplanation to Correct Option:Option (B):A second pendulum is a pendulum whose period is precisely two seconds.Its frequency is half a hertz (Hz).Its approximate length is 99.9 cm or nearly 1 meter.Hence, option (B) is the correct answer.

The correct option is B
99.9 cm

Explanation to Correct Option:
Option (B):
A second pendulum is a pendulum whose period is precisely two seconds.
Its frequency is half a hertz (Hz).
Its approximate length is 99.9 cm or nearly 1 meter.
Hence, option (B) is the correct answer.