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Measurement — PHYSICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9PHYSICSMeasurement1 Mark
MCQ
Moon has no atmosphere and acceleration due to gravity at its surface is one-sixth that at the earth's surface. When a pendulum is taken from earth to moon surface, its time period will:
  • ✓
    Increase
  • B
    decrease
  • C
    Not change
  • D
    becomes infinite.
✓

Answer

Correct option: A.
Increase
When a pendulum is taken from earth to moon surface, its time period will increase because the acceleration due to gravity on the moon is less than that on earth and the time period depends inversely on the square root of acceleration due to gravity.

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