# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 7 - 10 of 2247

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## Question number: 7

Edit
MCQ▾

### Question

A physical quantity x depends on quantities y and z as follows: x = Ay + B tan Cz, where A, B and C are constants. Which of the following do not have the same dimensions?

### Choices

Choice (4) Response

a.

x and A

b.

x and B

c.

C and z-1

d.

y and B/A

## Question number: 8

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MCQ▾

### Question

The position of a particle moving in the xy-plane at any time t is given by x = (3t 2 - 6t) metres, y = (t 2 - 2t) metres. Select the correct statement about the moving particle from the following

### Choices

Choice (4) Response

a.

The velocity of the particle is zero at t = 1 second

b.

The velocity of the particle is zero at t = 0 second

c.

The acceleration of the particle is zero at t = 0 second

d.

Both a. and c. are correct

## Question number: 9

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MCQ▾

### Question

The magnitude of any physical quantity

### Choices

Choice (4) Response

a.

depends on the method of measurement

b.

is more in SI system than in CGS system

c.

does not depend on the method of measurement

d.

directly proportional to the fundamental units of mass, length and time

## Question number: 10

Edit
Assertion-Reason▾

### Assertion (Ꭺ)

Out of three measurements l = 0.7 m; l = 0.70 m and l = 0.700 m, the last one is most accurate.

### Reason (Ꭱ)

In every measurement, only the last significant digit is not accurately known.

### Choices

Choice (4) Response

a.

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

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

Both Ꭺ and Ꭱ are false

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