# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 377 - 380 of 2320

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## Question number: 377

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MCQ▾

### Question

The roadway bridge over a canal is the form of an arc of a circle of radius 10 m. What is the minimum speed with which a car can cross the bridge without leaving contact with the ground at the highest point (g = 9.8 m/s 2)

### Choices

Choice (4)Response

a.

5.76 m/s

b.

9.899 m/s

c.

7.556 m/s

d.

14.654 m/s

## Question number: 378

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MCQ▾

### Question

An electric dipole has the magnitude of its charge is q and its dipole moment is p. It is placed in a uniform electric field E. If its dipole moment is perpendicular to the direction of the field, the force on it and its potential energy are respectively

### Choices

Choice (4)Response

a.

q. E and

b.

q. E and

c.

are zero

d.

2q. E and minimum

## Question number: 379

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MCQ▾

### Question

Two rigid bodies A and B rotate with rotational kinetic energies E A and E B respectively. The moments of inertia of A and B about the axis of rotation are I A and I B respectively. If I A = I B /8 and E A = 50 E B, the ratio of angular momentum (L A) of A to the angular momentum (L B) of B is

### Choices

Choice (4)Response

a.

0. . 25

b.

2.5

c.

5

d.

1.25

## Question number: 380

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MCQ▾

### Question

If identical charges (-q) are placed at each corner of a cube of side b , then electric potential energy of charge (+q) which is placed at center of the cube will be

### Choices

Choice (4)Response

a.

b.

c.

d.

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