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
The ratio of the height of a man to the radius of the earth is of the order of
Q. The ratio of the height of a man to the radius of the earth is of the order of 10 9 10 7 10 5 10 3 Answer: 10 7
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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
Which of the following quantities is expressed as force per unit area?
Q. Which of the following quantities is expressed as force per unit area? Work Area Volume Pressure Answer: Pressure
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