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Find out the elongation in block. If mas...


Find out the elongation in block. If mass area of cross-section and young modulus of block are m, A and y respectively.

A

`(Fl)/(AY)`

B

`(Fl)/(2AY)`

C

`(Fl)/(3AY)`

D

cannot extend

Text Solution

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The correct Answer is:
B
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ALLEN -ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 2 (One or more than one correct answer)
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  2. In Young's slit experiment, if the distance between two slits is halve...

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  3. Find out the elongation in block. If mass area of cross-section and yo...

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  4. A steel rod of cross-sectional area 16 cm^(2) and two brass rods each ...

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  8. When water rises in a capillary tube of radius r to height h, then its...

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  9. There are two thin films A of liquid and B of polythene, identical in ...

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  10. A capillary of the shape as shown is dipped in a liquid. Contact angle...

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  11. The spring balance A reads 2 kg with a block m suspended from it. A ba...

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  12. A steel ball is floating in a trough of mercuty. If we fill the empty ...

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  13. A ballong filled with air is weighted so that it barely floats in wate...

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  14. A small bulb is placed at the bottom of a tank containing water to a d...

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  15. A solid uniform ball having volume V and density rho floats at the int...

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  16. A sperical ball of radius r and relative density 0.5 is floating in eq...

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  17. Three blocks, labeled A, B and C are floating in water as shown in the...

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  19. A ballong filled with air is weighted so that it barely floats in wate...

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  20. A cylindrical container of radius 'R' and height 'h' is completely fil...

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