Arrange the following physical quantities in the increasing order of their magnitudes
I. $1 d y n e$
II. $1 N$
III. $3 k g m s^{- 2}$
IV. $10^{7} g c m s^{- 2}$

II, I, III, IV

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IV, I, III, II

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II, III, I, IV

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I, II, III, IV

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Solution

The correct option is D I, II, III, IV
Dyne $\to$ CGS unit $= g \frac{c m}{s^{2}}$
$1$ dyne $= 10^{- 5} N$
$1 N = 1 k g m s^{- 2},$
Hence $3 k g m s^{- 2} = 3 N$
and $10^{7} g c m s^{- 2} = 10^{2} N$

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