Properties of Solids & Liquids-Specific Heat Capacity (KVPY Stream-SA (Class 11) Physics): Questions 4 - 6 of 7

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Question number: 4

» Properties of Solids & Liquids » Specific Heat Capacity

Appeared in Year: 2013

MCQ▾

Question

A 10.0 W electrical heater is used to heat a container filled with 0.5 kg of water. It is found that the temperature of the water and the container rise by 3 K in 15 minutes. The container is then emptied, dried, and filled with 2 kg of oil. It is now observed that the same heater raises the temperature of the container-oil system by 2 K in 20 minutes. Assuming no other heat losses in any of the processes, the specific heat capacity of the oil is.

Choices

Choice (4) Response

a.

2.5×103JK1kg1

b.

3.0×103JK1kg1

c.

5.1×103JK1kg1

d.

1.5×103JK1kg1

Question number: 5

» Properties of Solids & Liquids » Specific Heat Capacity

MCQ▾

Question

Five identical blocks of metal are at 250C, 52ºC, 600 C, 780 C and 90ºC respectively. The specific heat of the material of the five blocks increases with temperature. Which of the following is true about the final temperature Tf when all five blocks are brought into contact? (Assuming that no heat is lost to the surroundings)

Choices

Choice (4) Response

a.

Tf will be more than 56ºC

b.

Tf can be either more than or less than 56ºC depending on the precise variation of the specific heat with temperature

c.

Tf will be 56ºC

d.

Tf will be less than 56ºC

Question number: 6

» Properties of Solids & Liquids » Specific Heat Capacity

MCQ▾

Question

A 15.0 W electrical heater is used to heat a container filled with 0.5 kg of water. It is found that the temperature of the water and the container rise by 4 K in 20 minutes. The container is then emptied, dried, and filled with 3 kg of oil. It is now observed that the same heater raises the temperature of the container-oil system by 3 K in 25 minutes. Assuming no other heat losses in any of the processes, the specific heat capacity of the oil is,

Choices

Choice (4) Response

a.

1700 JK-1 kg-1

b.

1800 JK-1 kg-1

c.

1900 JK-1 kg-1

d.

1500 JK-1 kg-1

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