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Choose the correct option. The sum of ...

Choose the correct option.
The sum of 7.21, 12.141 and 0.0028 can be expressed upto appropriate number of significant figures as

A

19.3

B

19.35

C

19.353

D

19.358

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CHETANA PUBLICATION-UNITS AND MEASUREMENTS-EXERCISE
  1. Choose the correct option. Which of the following units is NOT writte...

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  2. Choose the correct option. Which of the following is dimensionaless

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  3. Choose the correct option. The sum of 7.21, 12.141 and 0.0028 can be...

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  4. The diference between the true value and measured value is called

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  5. If the pointer of the voltmetre is not exactly at the zero of the scal...

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  6. The value of the magnitude rounded off to the nearest integral power o...

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  7. The reference standard used for the measurement of a physical quantity...

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  8. Define fundamental quantity and state them with SI units.

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  9. Explain system of units and state and some system of units.

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  10. Explain with example, how is dimensional analysis used to convert the ...

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  11. Find the dimension of : work

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  12. Find the dimension of : Refractive index

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  13. Show that the equation s = ut + frac(1)(2)at^2 is dimensionally correc...

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  14. Determine the number of significant figures in the following measurem...

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  15. Determine the number of significant figures in the following measurem...

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  16. Determine the number of significant figures in the following measurem...

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  17. Determine the number of significant figures in the following measurem...

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  18. What is an error explain types of error.

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  19. Period of simple pendulam is given as T = 2pi sqrtfrac(1)(g).Verify th...

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  20. The side of a cube is measured to be 20.44 +-0.02 m. Find the percenta...

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