# NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 1217 - 1221 of 2142

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## Question number: 1217

MCQ▾

### Question

The force required to separate two glass plates of area 3 ×10 -2 m -2 with a film of water 0.03 m thick between them, is (Surface tension of water is 70 × 10 -3 N/m)

### Choices

Choice (4) Response

a.

280 N

b.

130 N

c.

140 N

d.

380 AT

## Question number: 1218

MCQ▾

### Question

Which statements are false for a metal?

(a)

(b)

(c)

(d)

Select the correct answers and mark it according to the following codes:

### Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

1 and 2 are correct

c.

2 and 4 are correct

d.

1 and 3 are correct

## Question number: 1219

MCQ▾

### Question

Water is filled in a cylindrical container to a height of 3 m. The ratio of the cross-sectional area of the orifice and the beaker is 0.1. The square of the speed of the liquid coming out from the orifice is (g = 10m/s 2)

### Choices

Choice (4) Response

a.

50 m 2 /s 2

b.

52 m 2 /s

c.

50.5 m 2 /s 2

d.

51 m 2 /s 2

## Question number: 1220

MCQ▾

### Question

A uniform steel wire of density 7800 kg/m 3 is 2.5 m long and weighs 15.6 × 10 -3 kg. It extends by 1.25 mm when loaded by 8 kg. Calculate the value of young’s modulus of elasticity for steel.

### Choices

Choice (4) Response

a.

19.6 × 10 11 N/m 2

b.

1.96 × 10 11 N/m 2

c.

196 × 10 11 N/m 2

d.

All of the above

## Question number: 1221

MCQ▾

### Question

A homogeneous solid cylinder of length L and cross-sectional area is immersed such that it floats with its axis vertical at the liquid-liquid interface with length in the denser liquid as shown in the fig. The lower density liquid is open to atmosphere having pressure P Q. Then density of solid is given by

### Choices

Choice (4) Response

a.

b.

c.

d.

f Page