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Two holes of unequal diameters d(1) and ...

Two holes of unequal diameters `d_(1)` and `d_(2)(d_(1)gt d_(2))` are cut in metal sheet is heated

A

Both `d_1 and d_2` will decrease

B

Both `d_1 and d_2` will increase

C

`d_1` will increase, `d_2` will decrease

D

`d_1` will decrease, `d_2` will increase

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The correct Answer is:
B
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MOTION-HEAT TRANSFER & THERMAL EXPANSION -EXERCISE - 1
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  3. The spectral emissive power of a black body at a temperature of 6000K ...

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  4. Temperature of an ordinary bulb is 3000^@K. At what wave length will i...

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  5. If for a black body the graph of change is emissive power at different...

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  6. An iron ball is heated. The percentage increase will be the largest in...

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  7. Two holes of unequal diameters d(1) and d(2)(d(1)gt d(2)) are cut in m...

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  8. Two rods of length l(1) and l(2) are made of material whose coefficien...

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  9. A metallic bar is heated from 0^(@)C to 100^(@)C. The coefficient of l...

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  10. A metal wire of length jl and area of cross - section A is fixed betwe...

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  11. The temperatuire of a pendulum, the time period of which is t, is rais...

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  12. A pendulum clock has an iron pendulum 1 m long (alpha("iron")=10^(-5) ...

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  13. The density of a substance at 0^(@)C is 10 g//c c and at 100^(@)C, its...

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  14. A liquid with coefficient of volume expansion gamma is filled in a con...

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  15. If a bimetallic strip is heated it will

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  16. A breaker is filled with water at 4^@C. at one time the temperature i...

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  17. The variation of density of a solid with temperature is give by the fo...

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  18. Two spheres of the same radius are made from the same material. One is...

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  19. The brass disc fits singly in a hole in a steel plate. To loose the di...

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  20. A brass rod and a lead rod each 80.00 cm long at 0^@C are clamped toge...

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