At 4° C, the density of water is equal to
Q. At 4° C, the density of water is equal to 10-3 kg m-3 10-2 kg m-3 10 kg m-3 103 kg m-3 Answer: 103 kg m-3
Unit and Measurement MCQs
The number of significant figures in 0.06900 is
Q. The number of significant figures in 0.06900 is 5 4 2 3 Answer: 4
Which of the following measurements is most precise?
Q. Which of the following measurements is most precise? 5.00 mm 5.00 cm 5.00 m 5.00 km Answer: 5.00 mm
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If momentum (P ), area (A) and time ( T ) are taken to be fundamental quantities, then energy has the dimensional formula
Q. If momentum (P ), area (A) and time ( T ) are taken to be fundamental quantities, then energy has the dimensional formula (P1 A-1 T1) (P2 A1 T1) (P2 A-1/2 T1) (P1 A1/2 T-1) Answer: (P1 A1/2 T-1)
One torr is equal to
Q. One torr is equal to 1 Nm 2 1 mm of Hg 1 atm pressure 1 cm of Hg Answer: 1 mm of Hg
With due regard for significant figures, (12.5)2 =
Q. With due regard for significant figures, (12.5)2 = 156.250 156.25 156.2 156 Answer: 156
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The number of significant figures in 0.00040 m is
Q. The number of significant figures in 0.00040 m is 1 2 3 4 Answer: 2
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g cm s 2 stands for the unit of
Q. g cm s 2 stands for the unit of Energy Force Momentum Acceleration Answer: Force
A vernier caliper has its main scale of 10 cm equally divided into 200 equal parts. If vernier scale of 25 divisions coincides with 12 mm on the main scale. The least count of the instrument is
Q. A vernier caliper has its main scale of 10 cm equally divided into 200 equal parts. If vernier scale of 25 divisions coincides with 12 mm on the main scale. The least count of the instrument is 0.020 cm 0.002 cm 0.010 cm 0.01 cm Answer: 0.002 cm