# Properties of Solids & Liquids (NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics): Questions 165 - 169 of 190

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## Question number: 165

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

### Question

A constant volume gas thermometer shows pressure reading of 50 cm and 90 cm of mercury at 0°C and 100°C respectively. When the pressure reading is 60 cm of mercury, the temperature is

### Choices

Choice (4) Response

a.

40°C

b.

25°C

c.

15°C

d.

12.5°C

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## Question number: 166

» Properties of Solids & Liquids » Latent Heat

MCQ▾

### Question

A bullet moving with a uniform velocity v, stops sudden after hitting the target and the whole mass melts be m, specific heat S, initial temperature 25°C, melting point 475 °C and the latent heat L. Then v is given by

### Choices

Choice (4) Response

a.

b.

c.

d.

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## Question number: 167

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

### Question

A wire of cross sectional area 3 mm 2 is just stretched between two fixed points at a temperature of 20° C. Determine the tension when the temperature falls to 20° C. Coefficient of linear expansion a = 10 -5 °C -1 and Y = 2 × 10 11 N/m 2.

### Choices

Choice (4) Response

a.

120 N

b.

102 N

c.

20 N

d.

120 KN

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## Question number: 168

» Properties of Solids & Liquids » Surface Energy and Surface Tension

MCQ▾

### Question

The radii of two soap bubbles are r 1 and r 2. In isothermal conditions, two meet together in vacuum. Then the radius R of the resultant bubble is given by

### Choices

Choice (4) Response

a.

b.

c.

d.

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## Question number: 169

» Properties of Solids & Liquids » Surface Energy and Surface Tension

MCQ▾

### Question

When a body falls in air, the resistance of air depends to a rate extent on the shape of the body, 3 different shapes disc, ball and cigar shape. Identify the combination of air resistances which truly represents the physical situation. (The cross sectional areas are the same).

### Choices

Choice (4) Response

a.

2 < 3 < 1

b.

3 < 1 < 2

c.

3 < 2 < 1

d.

1 < 2 < 3

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