MCQ
The relation between frequency $‘n’$ wavelength ‘$\lambda$’ and velocity of propagation $‘v’$ of wave is
- A$n = v\lambda $
- B$n = \lambda /v$
- ✓$n = v/\lambda $
- D$n = 1/v$
$v=v \lambda$ or $\frac{v}{\lambda}$
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$\frac{{dv}}{{dt}} = - 2.5\sqrt v $ where $v$ is the instantaneous speed. The time taken by the object, to come to rest, would be........$s$

