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Earn 100

If E and G respectively denote energy and gravitational constant, then EG has the dimensions of:

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Important Questions on Physical World and Measurement

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A screw gauge gives the following readings when used to measure the diameter of a wire
Main scale reading : 0 mm
Circular scale reading : 52 divisions
Given that 1 mm on main scale corresponds to 100 divisions on the circular scale. The diameter of the wire from the above data is:
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If force [F], acceleration [A] and time [T] are chosen as the fundamental physical quantities. Find the dimensions of energy.
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The angle of 1' (minute of arc) in radian is nearly equal to
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A plano-convex lens of unknown material and unknown focal length is given. With the help of a spherometer we can measure the
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Time intervals measured by a clock give the following readings: 1.25 s, 1.24 s, 1.27 s, 1.21 s and 1.28 s. What is the percentage relative error of the observations?

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Taking into account of the significant figures, what is the value of 9.99 m0.0099 m?
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A screw gauge has least count of 0.01 mm and there are 50 divisions in its circular scale. The pitch of the screw gauge is: