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If specific heat of a substance is infin...

If specific heat of a substance is infinite, it means

A

Heat is given out

B

Heat is taken in

C

No change in temperature takes place whether heat is taken in or given out

D

All of the above

Text Solution

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The correct Answer is:
C
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How much heat (in joule) is required to raise the temperature of 205 g of water from 21.2^(@)C to 91.4^(@)C . Specific heate of water is 4.18 J g^(-1) .^(@)C^(-1) Strategy : The specific heat of a substance is the amount of heat required to raise the temperature of 1g of the substance by 1^(@C . Thus Specific heat = (("Amount of heat in joules"))/(("Mass of substance in grams")("Temperature change in" .^(@)C)) Rearrangement gives. Amount of heat (q) = Mass of substance (m) xx Specific heat (c ) xx Temperature change (Delta T)

Assertion : Specific heat of any substance remains constant at all temperatures. Reason : It is given by s= 1/m * (dQ)/(dt) .

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MOTION-HEAT - 1-EXERCISE -2 (Level - I) Objective Problems | JEE Main
  1. The amount of heat supplied to decrease the volume of an ice water mix...

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  2. Steam at 100^(@)C is passed into 1.1 kg of water contained in a calori...

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  3. If specific heat of a substance is infinite, it means

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  4. A lake surface is exposed to an atmosphere where the temperature is lt...

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  5. One end of a 2.35m long and 2.0cm radius aluminium rod (K=235W.m^(-1)K...

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  6. Two sheets of thickness d and 2d and same area are touching each other...

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  7. A bucket full of hot water cools from 75^(@)C to 70^(@)C in time T(1),...

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  8. An object is cooled from 75^(@)C to 65^(@)C in 2 min in a room at 30^(...

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  9. Two thermometers A and B are exposed in sunlight. The bulb of A is pai...

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  10. Which of the following law states that "good absorbers of heat are goo...

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  11. A hot body will radiate maximum energy if its surface is

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  12. There is a black spot on a body. If the body is heated and carried in ...

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  13. We consider the radiation emitted by the human body. Which of the foll...

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  14. Half part of ice block is covered with black cloth and rest half is co...

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  15. If 'p' calorie of heat energy is incident on a body and absorbs 'q' ca...

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  16. If same amount of ice in placed in black and white cloth then ice in b...

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  17. A black body emits radiations of maximum intensity at a wavelength of ...

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  18. The radiant energy from the Sun incident normally at the surface of ea...

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  19. The spectral emissive power E(lambda) for a body at temperature T(1) i...

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  20. Hot coffee is to be taken after 10 minutes it is put into a cup. To ob...

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