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Standard XII

Physics

Conduction Law

The water equ...

Question

The water equivalent of a copper colorimeter is 4.5g. If specific heat of copper is 0.09 cal /g/ $^{\circ}$ C, then
1) Mass of the calorimeter is 0.5kg
2) Thermal capacity of the calorimeter is 4.5 cal/ C
3)The heat required to raise the temperature of the calorimeter by 8 $^{\circ}$ C will be 36 cal.
4) Heat required to melt 15 gm of ice placed in the calorimeter will be 1200 cal
Choose the correct option from below

1 is correct

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2, 3 only are correct

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2, 3, 4 are correct

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3, 4 only are correct

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Solution

The correct option is C 2, 3, 4 are correct
Water equivalent is the ratio of the thermal capacity of the substance to the specific heat of water.

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Similar questions

Q. The water equivalent of a copper calorimeter is

4.5 g

. If the specific heat of copper is

0.09 cal g^{- 1} C^{- 1}

, then

Q. The water equivalent of a copper calorimeter is

4.5 g

. If the specific heat of copper is

0.09 {cal/g}^{\circ} C

, choose the correct option(s):
[Latent heat of fusion of ice

= 80 cal/g

]

Q. A metallic calorimeter of mass 100g contains 200 g of ice and the initial temperature of the calorimeter and the ice is

- 10^{\circ} C

. Heat is supplied to the system containing calorimeter and ice at a constant rate of

50 c a l s^{- 1}

. Find the time required to raise the temperature of the system to

50^{\circ} C

. [Neglect the loss of heat to the surroundings].

Take specific heat capacity of calorimeter and ice as

0.2 c a l g^{- 1}^{\circ} C^{- 1}

and

\frac{1}{2} c a l g^{- 1}^{\circ} C^{- 1}

.Take latent heat of fusion of ice as

80 c a l g^{- 1}

and specific heat capacity of water as

1 c a l g^{- 1}^{\circ} C^{- 1}

5 g

of water at

30^{\circ} C

and

5 g

of ice at

- 20^{\circ} C

are mixed together in a calorimeter. Find the final temperature of the mixture. Assume water equivalent of calorimeter to be negligible, specific heats of ice and water are

0.5

and

1 c a l / g^{\circ} C

, and latent heat of ice is

80 c a l / g

5

g of water at

30^{o}

C and

5

g of ice at

- 20^{o}

C are mixed in a calorimeter. Find the final temperature, water equivalent of calorimeter is negligible. Specific heat of ice is

0.5

cal

g^{- 1 o} C^{- 1}

and latent heat of ice is

80

cal per gram.

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The correct option is C 2, 3, 4 are correct Water equivalent is the ratio of the thermal capacity of the substance to the specific heat of water.

The correct option is C 2, 3, 4 are correct
Water equivalent is the ratio of the thermal capacity of the substance to the specific heat of water.