# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 104 - 108 of 2184

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## Question number: 104

Edit
MCQ▾

### Question

What are the dimensions of permeability (µ 0) of vacuum?

### Choices

Choice (4) Response

a.

[M L T -2 I 2]

b.

[M L -1 T -2 I -2]

c.

[M L -1 T -2 I 2]

d.

[M L T -2 I -2]

## Question number: 105

Edit
Assertion-Reason▾

### Assertion (Ꭺ)

A body having non-zero acceleration can have a constant velocity.

### Reason (Ꭱ)

Acceleration is the rate of change of velocity.

### Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

## Question number: 106

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MCQ▾

### Question

In S = a + bt + ct 2, S is measured in meters and t in seconds. The unit of c is

### Choices

Choice (4) Response

a.

ms -1

b.

ms -2

c.

m

d.

All of the above

## Question number: 107

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MCQ▾

### Question

The motion of a body is given by the equation dv (t) /dt = 6.0 - 3v (t), where v (t) is speed in m/s and t in sec.

If body was at rest at t = 0

### Choices

Choice (4) Response

a.

The speed varies with the time as v (t) = 2 (1 – e -5t) m/s

b.

The speed is 0.1 m/s when the acceleration is half the initial value

c.

The terminal speed is 4 m/s

d.

The magnitude of the initial acceleration is 6.0 m/s2

## Passage

Three of the fundamental constants of physics are the universal gravitational constant, G = 6.7 x 10 -11 m 3 kg -1 s -2, the speed of light, c = 3.0 x 10 8 m/s, and Planck’s constant,

h = 6.6 x 10 -34 kg m 2 s -1.

## Question number: 108 (1 of 2 Based on Passage) Show Passage

Edit
MCQ▾

### Question

The energy of a photon is given by E = If λ = 4 x 10 - 7 m, the energy of photon is

The universal gravitational constant, G = 6.7 x 10 -11 m 3 kg -1 s -2, the speed of light, c = 3.0 x 10 8 m/s, and Planck’s constant, h = 6.6 x 10 -34 kg m 2 s -1.

### Choices

Choice (4) Response

a.

3.95 eV

b.

2.10eV

c.

3.0 eV

d.

4.5 eV