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The dimensional formula for Planck’s constant h and gravitational constant G respectively are :-

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Important Questions on Physical World and Measurement

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If E, M, L and G denote energy, mass, angular momentum and Gravitational constant respectively, then quantity E2L2/M5G2 has dimensions of :
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The dimensions of the quantity E×B, where E represents the electric field and B the magnetic field may be given as :-
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A physical quantity ε is calculated by using the formula ε=xy210z1/3 where x, y and z are experimentally measured quantities. If the fractional percentage error in the measurements of x, y and z are 2%, 1% and 3% respectively, then the fractional percentage error will be :-
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A wire has a mass 0.3±0.003 g, radius 0.5±0.005 mm and length 6±0.06 cm. The maximum percentage error in the measurement of its density is-
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In a vernier callipers, one main scale division is x cm and n divisions of the vernier scale coincide with (n-1) divisions of the main scale. The least count (in cm) of the callipers is 
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Choose the incorrect statement out of the following :-
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The moon's distance from the earth is 360000 km and its diameter subtends an angle of 42' at the eye of the observer. The diameter of the moon is
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Which of the following units denotes the dimensionsML2Q2 , where Q denotes the electric charge?