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प्रश्न
A simple pendulum moves from one end to the other in ¼ second. What is its frequency?
उत्तर
Time taken by simple pendulum to move from one end to the other is `"T"/2` second.
Given: `"T"/2 = 1/4` second
∴ T = `1/2` second
∴ Frequency, n = `1/"T" = 2` Hz
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