# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 299 - 303 of 2320

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## Question number: 299

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MCQ▾

### Question

A total charge Q is broken in two parts Q 1 and Q 2 and they are placed at a distance R from each other. The maximum force of repulsion between them will occur, when

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 300

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MCQ▾

### Question

Separation between the plates of a parallel plate capacitor is d and the area of each plate is A. When a slab of material of dielectric constant k and thickness t (t < d) is introduced between the plates, its capacitance becomes

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 301

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MCQ▾

### Question

Equal charges q are placed at the four corners A, B, C, D of a square of length a. The magnitude of the force on the charge at B will be

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 302

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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 /4 and E A = 100 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.

25

b.

5

c.

1.25

d.

0.25

## Question number: 303

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MCQ▾

### Question

Find the torque of a force F =-2 i + j+3 k acting at the point r = 5 i + 3 j + 2k

### Choices

Choice (4)Response

a.

14i - 38j + 16k

b.

7i - 19j + 19k

c.

-l4i + 38j -16k

d.

-21i + 3j + 5k

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