# NEET Physics: Questions 1345 - 1349 of 2142

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

## Question number: 1345

» Properties of Solids & Liquids » Heat Transfer » Radiation

MCQ▾

### Question

The rates of cooling of two different liquids put in exactly similar calorimeters and kept in identical surroundings are the same if

### Choices

Choice (4) Response

a.

Different volumes of the liquids at the same temperature are taken

b.

Equal volumes of the liquids at the same temperature are taken

c.

Equal masses of the liquids at the same temperature are taken

d.

The masses of the liquids are equal

## Question number: 1346

MCQ▾

### Question

A copper rod 5 m long is stretched by 1 mm. Strain will be -

### Choices

Choice (4) Response

a.

2 × 10 -4, longitudinal

b.

1.2 × 10 -4, volumetric

c.

2.4 × 10 -4, longitudinal

d.

1 × 10 -3, volumetric

## Question number: 1347

MCQ▾

### Question

When a body falls in air, the resistance of air depends to a rat extent on the shape of the body, 3 different shapes (1.5 cm cube, 2.3 cm cube and 3.1 cm cube). Identify the combination of air resistances which truly represents the physical situation. (The cross sectional areas are the same).

### Choices

Choice (4) Response

a.

3 < 2 < 1

b.

2 < 3 < 1

c.

3 < 1 < 2

d.

1 < 2 < 3

## Question number: 1348

MCQ▾

### Question

Is longitudinal strain and Y its young’s modulus of elasticity then potential energy per unit volume will be

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 1349

MCQ▾

### Question

A steel wire of uniform cross-sectional area 2 mm 2 is heated up to 50°C and clamped rigidly at two ends. If the temperature of wire falls to 30° then change in tension in the wire will be, if coefficient of linear expansion of steel is 1.1 × 10 -5 °C -1 and young’s modulus of elasticity of steel is 2 × 10 -6 N/m 2.

### Choices

Choice (4) Response

a.

44 N

b.

22 N

c.

132 N

d.

88 N

f Page