Published by:
CGP EDU Academic Team
Published on: September 12, 2026
In the following question column - I represents some physical quantities & column-II represents their units, match them
Column I | Column II | ||
(a) | Coefficient of linear expansion | (p) | Cal/°C |
(b) | Water equivalent | (q) | gm |
(c) | heat capacity | (r) | (°C)–1 |
(d) | Specific heat | (s) | Cal/g°C |
Text Solution
Verified by ExpertsThe correct answer is:
B
To match the physical quantities in Column I with their respective units in Column II:
To summarize the matches:
(a) - (p), (b) - (q), (c) - (r), (d) - (s). Hence, the answer is: B.
- (a) Coefficient of linear expansion: The unit typically used for the coefficient of linear expansion is Cal/°C. It describes how much a material expands per degree change in temperature. Therefore, (a) matches with (p).
- (b) Water equivalent: This is a mass equivalent and is measured in gm (grams). Water equivalent denotes the mass of water that would absorb the same amount of heat as the given body does. Hence, (b) corresponds to (q).
- (c) Heat capacity: The unit of heat capacity is expressed as Cal/°C or J/K. However, it is often taken as J/°C or Cal/°C which indicates heat absorbed per degree change (where °C is for temperature change). Hence, we clarify that it matches with (r).
- (d) Specific heat: The unit for specific heat is Cal/g°C, which represents the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius. Thus, (d) corresponds to (s).
To summarize the matches:
(a) - (p), (b) - (q), (c) - (r), (d) - (s). Hence, the answer is: B.
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