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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October 2022
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
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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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Electron volt is a unit of
Q. Electron volt is a unit of Potential difference Electric current Electronic charge Energy Answer: Energy
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Measure of two quantities along with the precision of respective measuring instrument is A = 2.5 m s-1 ± 0.5 ms-1 B = 0.10 s ± 0.01 s The value of A B will be
Q. Measure of two quantities along with the precision of respective measuring instrument is A = 2.5 m s-1 ± 0.5 ms-1 B = 0.10 s ± 0.01 s The value of A B will be (0.25 ± 0.08) m (0.25 ± 0.5) m (0.25 ± 0.05) m (0.25 ± 0.135) m Answer: (0.25 ±
The mass and volume of a body are 4.237 g and 2.5 cm3, respectively. The density of the material of the body in correct significant figures is
Q. The mass and volume of a body are 4.237 g and 2.5 cm3, respectively. The density of the material of the body in correct significant figures is 1.6048 g cm-3 1.69 g cm-3 1.7 g cm-3 1.695 g cm-3 Answer: 1.7 g cm-3
One kilometer is equal to how many miles?
Q. One kilometer is equal to how many miles? 0.84 0.5 1.6 0.62 Answer: 0.62
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There are 20 divisions in 4 cm of the main scale. The vernier scale has 10 divisions. The least count of the instrument is
Q. There are 20 divisions in 4 cm of the main scale. The vernier scale has 10 divisions. The least count of the instrument is 0.05 cm 0.5 cm 5.0 cm 0.005 cm Answer: 0.005 cm