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CGP EDU Academic Team
Published on: September 12, 2026
A spherical body of mass m and radius r is allowed to fall in a medium of viscosity n . The time in which the velocity of the body increases from zero to 0.63 times the terminal velocity \(\left( V \right)\) is called time constant \(\left(\tau\right)\) . Dimensionally \tau can be represented by
Text Solution
Verified by ExpertsThe correct answer is:
D
Time constant \tau = [T] and Viscosity \(\eta = \left[ ML^{-1}T^{-1} \right]\)
For options , and dimensions are not matching with time constant.
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