Properties of Solids & Liquids-Thermal Expansion (NEET Physics): Questions 16 - 20 of 32

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Question number: 16

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

A constant volume gas thermometer shows pressure reading of 40 cm and 90 cm of mercury at 0°C and 100°C respectively. When the pressure reading is 80 cm of mercury, the temperature is

Choices

Choice (4) Response

a.

12.5°C

b.

40°C

c.

80°C

d.

15°C

Question number: 17

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

A glass flask of volume one liter at 0 0 C is filled, level full of mercury at this temperature. The flask and mercury are now heated to 100 0 C. How much mercury will spill out, if coefficient of volume expansion of mercury is 1.82 × 10 -4 /°C and linear expansion of glass is 0.2 × l0 -4 /ºC?

Choices

Choice (4) Response

a.

151 cc

b.

212 cc

c.

152 cc

d.

176 cc

Question number: 18

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

The coefficient of apparent expansion of mercury in a glass vessel is 153 × 10 -6 /°C and in a steel vessel is 144 × 10 -6 / 0 C If a for steel is 12 × 10 -6 / 0 C, then that of glass is

Choices

Choice (4) Response

a.

36 × 10 -6 / o C

b.

27 × 10 -6 /°C

c.

6 × 10- 6 /°C

d.

9 × 10 - 6/° C

Passage

Read the passage given below and answer the questions that follows:

In a thermally insulated tube of cross sectional area 4 cm 2 a liquid of thermal expansion coefficient 10 -3 K -1 is flowing. Its velocity at the entrance is 0.1 m/s. At the middle of the tube a heater of a power of 10 kW is heating the liquid. The specific heat capacity of the liquid is 1.5 kJ/ (kg K), and its density is 1500 kg/m 3 at the entrance.

Question number: 19 (1 of 3 Based on Passage) Show Passage

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

How much bigger is the volume rate of flow at the end of the tube than at the entrance in cubic meters?

Choices

Choice (4) Response

a.

13×105

b.

9×105

c.

49×105

d.

None of the above

Question number: 20 (2 of 3 Based on Passage) Show Passage

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

What is the density of liquid at the exit?

Choices

Choice (4) Response

a.

1350kgm3

b.

1400kgm3

c.

1450kgm3

d.

None of the above

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