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NEET UG PHYSICS MCQ: UNITS & MEASUREMENTS
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In a simple pendulum experiment for determination of acceleration due to gravity , time taken for 20 oscillations is measured by using a watch of 1 second least count. The mean value of time taken comes out to be . The length of pendulum is measured by using a meter scale of least count and the value obtained is . The percentage error in the determination of is close to
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Correct option: A
6.8
Option A (6.8) is correct because the percentage error in g is calculated using the formula involving the errors in time period and length.
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Statement-I: Random errors can be positive or negative.
Statement-II: Cause of random errors are uncertain. An object is moving through the liquid. The viscous damping force acting on it is proportional to the velocity. Then dimension of constant of proportionality is The error due to parallax is a: 2.34 is obtained by rounding of the number The dimensional formula of self-inductance is The dimension of is that of
Statement-II: Cause of random errors are uncertain. An object is moving through the liquid. The viscous damping force acting on it is proportional to the velocity. Then dimension of constant of proportionality is The error due to parallax is a: 2.34 is obtained by rounding of the number The dimensional formula of self-inductance is The dimension of is that of