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Important Questions on Physical World and Measurement

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Beta Question Bank for Engineering: Physics>Chapter 3 - Physical World and Measurement>Exercise-1>Q 13

The percentage errors in the measurement of mass and speed are 2% and 3%, respectively. How much will be the maximum error in the estimation of the kinetic energy obtained by measuring mass and speed?

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Beta Question Bank for Engineering: Physics>Chapter 3 - Physical World and Measurement>Exercise-1>Q 14
The density of a cube is measured by measuring its mass and the length of its sides. If the maximum errors in the measurement of mass and length are 4% and 3%, respectively, then find the maximum error in the measurement of the density of cube.
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Beta Question Bank for Engineering: Physics>Chapter 3 - Physical World and Measurement>Exercise-1>Q 15
An experiment measures quantities a, b and c and X is calculated from X=ab2c3 If the percentage error in a, b and c are ±1%,±3% and ±2% respectively, the percentage error in X will be-
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Beta Question Bank for Engineering: Physics>Chapter 3 - Physical World and Measurement>Exercise-1>Q 16
If error in measuring diameter of a circle is 4%, the error in measuring radius of the circle would be
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Beta Question Bank for Engineering: Physics>Chapter 3 - Physical World and Measurement>Exercise-1>Q 17
If a, b, c are the percentage errors where (a<<1, b<<1, c<<1) in the measurement of A,B and C, then percentage error in ABC would be approximately -
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Beta Question Bank for Engineering: Physics>Chapter 3 - Physical World and Measurement>Exercise-1>Q 18
While measuring acceleration due to gravity by a simple pendulum, a student makes a positive error of 1% in the length of the pendulum and a negative error of 3% in the value of the time period. His percentage error in the measurement of the value of g will be
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Beta Question Bank for Engineering: Physics>Chapter 3 - Physical World and Measurement>Exercise-1>Q 19
The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the maximum error in the measurement of force and length are respectively 4% and 2%, The maximum error in the measurement of pressure is
 
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Beta Question Bank for Engineering: Physics>Chapter 3 - Physical World and Measurement>Exercise-1>Q 21
The period of oscillation of a simple pendulum in an experiment is recorded as 2.63 s, 2.56 s, 2.42 s, 2.71 s and 2.80 s, respectively. The average absolute error is,