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A student measures the time period of pendulums of different lengths. What should be kept constant for a fair test?

Answer and explanation

Correct answer: Initial angle from which the pendulum is released

The initial angle can affect motion so it should remain constant. Keep influential factors other than the independent variable controlled.

Related tags

Controlled VariablePendulumFair ExperimentVariables In An ExperimentExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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