Gujarati
13.Oscillations
easy

सैकण्डी लोलक की लम्बाई .... $cm$ है

A

$99.8$

B

$99$

C

$100$

D

उपरोक्त में से कोई नहीं

Solution

$T = 2\pi \sqrt {l/g}  $

$\Rightarrow l = \frac{{g{T^2}}}{{4{\pi ^2}}} = \frac{{9.8 \times 4}}{{4 \times {\pi ^2}}} = 99\;cm$

Standard 11
Physics

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