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0.1 Pa = ...... Nm^(-2) = ...... "dyne" ...

`0.1 Pa = ...... Nm^(-2) = ...... "dyne" cm^(-2).`

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1 Pa = …… "dyne"//cm^(2) .

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An object of mass 5 kg is suspended by a copper wire of length 2 m and diameter 5 mm. Calculate the increase in the length of the wire. In order not to exceed the elastic limit, what should be the minimum diameter of the wire ? For copper, elastic limit =1.5 xx 10 ^(9) "dyne" //cm ^(2) , (Y) = 1.1 xx 10 ^(12) "dyne"//cm^(2).

Find the pressure in a bubble of radius 0.2 cm formed at the depth of 5cm from the free surface of water . The surface tension of water is 70 dyne cm^(-1) and its density is 1gcm^(-3) . Atmospheric pressure is 10^(6) dyne cm^(-2) .The gravitational acceleration is 980cms^(-2) .

A rectangular frame of 25 cm x 15 cm is placed normal to 2 xx 10^4 NC^(-1) uniform field. If this frame is formed in circular shape, then flux associated will be...... Nm^(2)C^(-1) . (a) 750 (b) 1019.1 (c) 800 (d) 2015.5

KUMAR PRAKASHAN-MACHANICAL PROPERTIES OF SOLIDS -SECTION-C
  1. Why strain has no unit?

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  2. Which type of elastic modulus is there in liquid and gas ?

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  3. 0.1 Pa = ...... Nm^(-2) = ...... "dyne" cm^(-2).

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  4. At every point of rest liquid, the tangential stress is zero. Explain ...

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  5. Which one is more elastic, steel or plastic ? Why ?

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  6. Why water is more elastic than air ?

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  7. Give the value of shear modulus of sulfuric acid.

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  8. A wire is hanged from the ceiling without any weight below it, would t...

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  9. Which of the following bulk modulus is possible in solid, liquid and g...

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  10. A solid sphere of radius 10 cm is subjected to a pressure of 5 xx 10^(...

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  11. The length of metallic wire is l. The tensin in the wire is T(1) for l...

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  12. What is the effect of change in temperature on the Young's modulus ?

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  13. Does the energy stored in a spring changes when it stretched or compre...

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  14. Is stress is a vector or scalar or tensor ?

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  15. When the heavy weight suspended and removed from the metal wire, it ca...

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  16. Name the property which opposes the deformation.

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  17. Write the limitation of Hooke's law.

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  18. What are the factors on which modulus of elasticity depends ?

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  19. Two force are equal and opposite in direction exerted on a bar (rod) a...

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  20. Weight is suspended to the end of elastic spring its increaed length d...

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