# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 384 - 387 of 2184

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## Question number: 384

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MCQ▾

### Question

The magnitude of the force (in newton) acting on a body varies with time t (in microsecond) as shown in fig. AB, BC, and CD are straight line segments. The magnitude of the total impulse of the force on the body from t = 4 us to t = 16 us is Graph Explaining Force vs Time Graph In above figure we show force vs time graph, we also so that magnitude of force in both direction

### Choices

Choice (4) Response

a.

5 10 -4 N. s

b.

5 10 -2 N. s

c.

5 10 -5 N. s

d.

5 10 -3 N. s

## Question number: 385

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MCQ▾

### Question

The distance between H + and CI - ions in HCl molecule is 1.28. What will be the potential due to this dipole at a distance of 12 on the axis of dipole?

### Choices

Choice (4) Response

a.

13 V

b.

130 V

c.

1.3 V

d.

0.13 V

## Question number: 386

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MCQ▾

### Question

A boat of mass 100 kg is moving with a velocity of 5 m/s. A person of mass 50 kg jumps into the boat. The velocity of the boat with the person will be –

### Choices

Choice (4) Response

a.

3.71 cm/s

b.

3.33 m/s

c.

4.48 m/s

d.

7.1 cm/s

## Passage

Pseudo force is an imaginary force which is recognized only by a non-inertial observer to explain the physical situation according to newton’s laws. Magnitude of pseudo force F is equal to the product of the mass m of the object and the acceleration a of the frame of reference. The direction of the force is opposite to the direction of acceleration, F =-ma

## Question number: 387 (1 of 3 Based on Passage) Show Passage

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MCQ▾

### Question

A spring weighing machine inside a stationary lift reads 50 kg when a man stand on it. What would happen to the scale reading if the lift is moving upward with (i) constant velocity (ii) constant acceleration?

### Choices

Choice (4) Response

a.

50 kg wt,

b.

50 kg wt,

c.

50 kg wt,

d.

50 kg wt,