Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
The pair of physical quantities that have the same dimension is (are) (1) Reynold's number and coefficient of friction (2) Curie and frequency of a light wave (3) Latent heat and gravitational potential (4) Planck's constant and torqueA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: A
Solution :
Reynold's number and coefficient of friction are dimensionless quantities. Curie is the number of atoms decaying per unit time and frequency is the number of oscillations per unit time. Latent heat and gravitational potential both have the same dimension corresponding to energy per unit mass.
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