Properties of Solids & Liquids (NEET Physics): Questions 107 - 111 of 188

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Question number: 107

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

Question

The force required to separate two glass plates of area 10 -2 m 2 with a film of water 0.05 mm thick between them, is (Surface tension of water is 70 × 10 -3 N/m)

Choices

Choice (4) Response

a.

50 N

b.

14 N

c.

28 N

d.

38 AT

Question number: 108

» Properties of Solids & Liquids » Heat Transfer » Convection

MCQ▾

Question

Two rods A and B are of equal lengths. Their ends are kept between the same temperature and their areas of cross-sections are A 1 and A 2 and thermal conductivities K 1 and K 2. The rate of heat transmission in the two rods will be equal, if

Choices

Choice (4) Response

a.

K1A12=K2A22

b.

K1A1=K2A2

c.

K1=K2

d.

K1A2=K2A1

Question number: 109

» Properties of Solids & Liquids » Terminal Velocity

Assertion-Reason▾

Assertion (Ꭺ)

Bernoulli’s theorem holds for incompressible, non-viscous fluids.

Reason (Ꭱ)

The factor v22g is called velocity head.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are false

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: 110 (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: 111 (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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