| (i) volumetric strain and coefficient of friction |
| (ii) disintegration constant of a radioactive substance and frequency of light wave |
| (iii) heat capacity and gravitational potential |
| (iv) Planck's constant and torque |
| The correct pairs are |
A) (i), (ii) and (iii)
B) (i), (ii) and (iv)
C) (iii) and (iv)
D) (ii) and (iii)
Correct Answer: A
Solution :
[a] (i) strain and coefficient of friction both are dimensionless (ii) disintegration constant and frequency of light both have dimensions \[[{{T}^{-1}}]\] (iii) heat capacity has unit \[cal/kg\]while gravitational potential has unit J/kg i.e. both have dimensions \[[{{L}^{2}}{{T}^{-2}}]\].
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