If the bob of a simple pendulum moves from its mean position to one of its extreme positions, then it has completed:
A
One oscillation
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B
Half oscillation
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C
One-fourth oscillation
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D
Two oscillations
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Solution
The correct option is C One-fourth oscillation If bob of the simple pendulum moves from its mean position to one of its extreme positions, it has completed one-fourth oscillation. One oscillation is said to be completed when the bob starting from its mean position goes to one extreme, returns to mean position, then goes to another extreme and again returns to its mean position.