Question

Match List I with List II.

List I	List II
A.	Torque	I.	Nms–1
B.	Stress	II.	Jkg–1
C.	Latent Heat	III.	Nm
D.	Power	IV	Nm–2

Choose the correct answer from the options given below

• A. A-III, B-II, C-I, D-IV
• B. A-III, B-IV, C-II, D-I
• C. A-IV, B-I, C-III, D-II
• D. A-II, B-III, C-I, D-IV

Answer 1

The Correct Option is B

To solve the problem of matching the quantities in List I with their respective units in List II, let's analyze each item in detail:

1. Torque: Torque is a measure of the rotational force on an object. It is expressed in Newton-meters (Nm). Therefore, Torque matches with III (Nm).
2. Stress: Stress in physics is defined as force per unit area and is measured in Pascals, which is equivalent to Newton per square meter (Nm^–2). So, Stress matches with IV (Nm^–2).
3. Latent Heat: Latent heat refers to the energy absorbed or released during a phase change of a substance without changing its temperature. The unit of latent heat is Joules per kilogram (Jkg^–1). Consequently, Latent Heat matches with II (Jkg^–1).
4. Power: Power is the rate of doing work or the rate of energy transfer, measured in Watts. A Watt is defined as one Joule per second (Nms^–1). Hence, Power matches with I (Nms^–1).

Based on the reasoning above, the correct match between List I and List II is:

• A - III (Torque - Nm)
• B - IV (Stress - Nm^–2)
• C - II (Latent Heat - Jkg^–1)
• D - I (Power - Nms^–1)

Thus, the correct answer is:

A-III, B-IV, C-II, D-I