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A string of cross section 2cm^2 is doub...

A string of cross section `2cm^2` is doubled in length by the application of a longitudinal force ` 2 xx 10^5` dynes. The youngs modulus is

A

`10^7 dy//cm^2`

B

`10^5 dy//cm^2`

C

`10^4 dy//cm^2`

D

`100 dy//cm^2`

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-MECHANICAL PROPERTIES OF SOLIDS-EXERCISE - 2 (YOUNG.S MODULUS)
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  10. A wire stretched by 0.01 m when it is stretched by a certain force. An...

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  11. A steel wire is 1m long and 1mm^2 in area of cross-section. If it tak...

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  13. An iron wire of length 4m and diameter 2mm is loaded with a weight of ...

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  14. Two wires of same material have masses in the ratio 3:4 the ratio of t...

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  15. Two exactly similar wires of steel (Y=20 xx 10^11 dy//cm^2) and copper...

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  16. Two wires of same length and thickness are joined end to end. Their Yo...

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  17. A steel wire of length 20 cm is stretched to increase its length by 0....

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  18. A tungsten wire, 0.5 mm in diameter, is just stretched between two fix...

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  19. Two wires are arranged as shown in the figure. The elongations in uppe...

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  20. A uniform steel rod of length 1m and area of cross section 20 cm^2 is...

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