Introduction to Physics Obj-2 HC Verma Solutions Vol-1 Ch-1 Concept of Physics for Class-11. Solution of Objective -2 (MCQ-2) Questions of Ch-1 Introduction to Physics (Concept of Physics) .Visit official Website CISCE for detail information about ISC Board Class-11 Physics.

## Introduction to Physics Obj-2 (MCQ-2) HC Verma Solutions Vol-1 Ch-1

 Board ISC and other board Publications Bharti Bhawan Publishers Ch-1 Introduction to Physics Class 11 Vol 1st writer H C Verma Book Name Concept of Physics Topics Solution of Objective-2 (MCQ-2) Questions Page-Number 9

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Que for Short Ans

Objective-I

Objective-II,

Exercise

### Introduction to Physics Obj-2 (MCQ-2) HC Verma Solutions Vol-1 Ch-1

(page-9)

#### Question 1:

The dimensions ML−1 T−2 may correspond to

(a) work done by a force
(b) linear momentum
(c) pressure
(d) energy per unit volume.

The options (c) and (d) are correct

Explanation:

[Work done] = [ML2T−2]
[Linear momentum] = [MLT−1]
[Pressure] = [ML−1 T−2]
[Energy per unit volume] = [ML−1 T−2]

From the above, we can see that pressure and energy per unit volume have the same dimension, i.e., ML−1 T−2.

#### Question 2:

Choose the correct statements(s):
(a) A dimensionally correct equation may be correct.
(b) A dimensionally correct equation may be incorrect.
(c) A dimensionally incorrect equation may be correct.
(d) A dimensionally incorrect equation may be incorrect.

The options (a) , (b) and (c) are correct

Explanation:

It is not possible that a dimensionally incorrect equation is correct. All the other situations are possible.

#### Question 3:

Choose the correct statements(s):
(a) All quantities may be represented dimensionally in terms of the base quantities.
(b) A base quantity cannot be represented dimensionally in terms of the rest of the base quantities.
(c) The dimensions of a base quantity in other base quantities is always zero.
(d) The dimension of a derived quantity is never zero in any base quantity.

The options (a) , (b) and (c) are correct

Explanation:

A derived quantity can exist which is dimensionless for example fine structure constant which is given by

where e is the electric charge and c is the speed of light and h is the Plank Constant α is a derived quantity.

—: End of Introduction to Physics Obj-2 (MCQ-2) HC Verma Solutions Vol-I :–

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