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Two full turns of the circular scale of a screw gauge cover a distance of 1 mm on its main scale. The total number of division on the circular scale is 50. Further, it is found that the screw gauge has a zero error of `-0.03` mm while measuring the diameter of a thin wire, a student notes the main scale reading of 3 mm and the number of circular scale division in line with the main scale as 35. The diameter of the wire is

A

3.32 mm

B

3.73 mm

C

3.67 mm

D

3.38 mm

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The correct Answer is:
D
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AAKASH SERIES-UNITS AND MEASUREMENTS-EXERCISE -2
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  2. If vec a and vec b are two unit vectors and theta is the angle between...

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  3. Two full turns of the circular scale of a screw gauge cover a distance...

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  4. In a vernier callipers, n divisions of its main scale match with (n+1)...

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  5. A Vernier callipers has 1 mm marks on the main scale . It has 20 equa...

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  6. A screw gauge gives the following reading when used to mesure the diam...

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  7. The vernier scale of a travelling microscope has 50 divisions which co...

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  8. Time for 20 oscillations of a pendulum is measured as t(1)=39.6" "s,...

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  9. The measured mass and volume of a body are 53.63 g and 5.8cm^(3) resp...

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  10. A Vernier callipers has 1 mm marks on the main scale . It has 20 equa...

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  11. Which of the following numbers has least number of significant figures...

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  12. The number of significant figures in 0.0006032 is

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  13. The number of significant figures in 6.320 is

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  14. The radius of a circle is 2.12 metre. Its area according to the rule o...

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  15. Epistasis and dominance are respectively

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  16. The mass of a block is 87.2 g and its volume is 25 cm^(3). What is its...

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  17. The length of a rod is measured by different instruments. Of the follo...

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  18. 2.34 is obtained by rounding of the number

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  19. When 0.0003125 is reduced to 3 significant figures its value is

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  20. Gibbs-Helmoholtz equation relates the free energy change to the enthal...

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