# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 701 - 705 of 2320

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## Question number: 701

Edit
MCQ▾

### Question

In the above example, the velocity after 2 sec will be - (in m/sec)

### Choices

Choice (4)Response

a.

10

b.

5

c.

10√3

d.

5√3

## Question number: 702

Edit
MCQ▾

### Question

Consider a system of two particles having mass m 1 and m 2. If the particle of mass m 1 is pushed towards the centre of mass of particles through a distance d, by what distance would be particle of mass m 2 move so as to keep the centre of mass of particles at the original position?

### Choices

Choice (4)Response

a.

b.

c.

d

d.

## Question number: 703

Edit
MCQ▾

### Question

The frequency of ac mains in India is

### Choices

Choice (4)Response

a.

60 c/s or Hz

b.

50 c/s or Hz

c.

120 c/s or Hz

d.

30 c/s or Hz

## Question number: 704

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MCQ▾

### Question

The distance between the carbon atom and the oxygen atom in a carbon monoxide molecule is 1.1. Given, mass of carbon atom is 12 a. m. u. and mass of oxygen atom is 16 a. m. u. , calculate the position of the center of mass of the carbon monoxide molecule

### Choices

Choice (4)Response

a.

6.3 Å from the carbon atom

b.

0.63 Å from the carbon atom

c.

1 Å from the oxygen atom

d.

0.12 Å from the oxygen atom

## Question number: 705

Edit
Assertion-Reason▾

### Assertion (Ꭺ)

Position of center of mass is independent of the reference frame.

### Reason (Ꭱ)

Centre of mass is same for all bodies.

### Choices

Choice (4)Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are 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

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