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Heat given to a body which raises its te...

Heat given to a body which raises its temperature by `1^@C` is

A

(a)water equivalent

B

(b)thermal capacity

C

(c)specific heat

D

(d)temperature gradient

Text Solution

Verified by Experts

The correct Answer is:
B
Amount of heat required by a body of any mass of undergo a unity change in temperature is known as heat capacity or thermal capacity of the substance.
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The temperature of a body rises by 44^(@)C when a certain amount of heat is given to it . The same heat when supplied to 22 g of ice at -8^(@)C , raises its temperature by 16^(@)C . The water eqivalent of the body is [Given : s_(water) = 1"cal"//g^(@)C & L_(t) = 80 "cal" //g, s_("ice") = 0.5"cal"//g^(@)C ]

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(a) How much heat should be provided to ice of 720 g mass, lying at - 10^@C to melt it to water at 0^@C ? (b) How much heat should be provided to water at 0^@C to increase its temperature to 100^@C ?(c) How much heat should be given to water at 100^@C to transform it completely into water ? (d) Totally, how much heat should be given to ice of 720 g at -10^@C to convert it completely into vapour ? (C"ice"=2220 "J kg"^(-1) K^(-1), C"water"=4190 "J kg"^(-1) K^(-1) , LF=333 "kJ"/"kg", LV=2256 "kJ"/"kg" )

The pressure that has to be applied to the ends of a steel wire of length 10cm to keep its length constant when its temperature is raised by 100^@C is : (For steel Young's modulus is 2xx10^11 Nm^-2 and coefficient of thermal expansion is 1.1xx10^-5K^_1 )

The heat required to raise the temperature of body by 1 K is called .......

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Statement - 1 : An ideal gas has infinitely many molar specific heats. Statement- 2 : Specific heat is amount of heat needed to raise the temperature of 1 mole of gas by 1K .

What amount of heat must be supplied to 2.0 xx 10^(-2) kg of nitrogen (at room temperature ) to raise the temperature by 45^(@)C at constant pressure. Molecular mass of N_(2) = 28 , R= 8.3 J "mol"^(-1) K^(-1) .

ALLEN -GEOMETRICAL OPTICS-EXERCISE - 05 (A)
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  2. An open glass tube is immersed in mercury in such a way that a length ...

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  3. Heat given to a body which raises its temperature by 1^@C is

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  4. Which of the following is more close to a black body?

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  5. Infrared radiation is detected by

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  8. The temperature of the two outer surfaces of a composite slab, consist...

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  9. The figure shows a system of two concentric spheres of radii r(1) and ...

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  10. Assuming the Sun to be a spherical body of radius R at a temperature o...

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  11. One end of thermally insulated rod is kept at a temperature T(1) and t...

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  12. A long metallic bar is carrying heat from one of its ends to the other...

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  13. A liquid in a beaker has temperature theta(t) at time t and theta0 is ...

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  14. If a piece of metal is heated to temperature theta and the allowed to ...

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  15. One mole of a diatomic ideal gas undergoes a cyclic process ABC as sho...

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  16. Three rods of Copper, Brass and Steel are welded together to from a Y ...

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  17. Cooking gas container are kept in a lorry moving with uniform speed. T...

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  18. At what temperature is the rms velocity of a hydrogen molecule equal t...

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  20. During an adiabatic process, the pressure of gas is found to be propor...

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