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$\tan^{-1} (\frac{1}{4}) + \tan^{-1} (\frac{2}{9})$ is equal to :
jeemain
math
past papers
2002
220
asked
Dec 11, 2018
by
pady_1
0
answers
The resultant of forces $\overrightarrow{P}$ and $\overrightarrow{Q}$ is $\overrightarrow{R}$. If $\overrightarrow{Q}$ is doubled, then $\overrightarrow{R}$ is doubled. If the direction of $\overrightarrow{Q}$ is reversed, then $\overrightarrow{R} $ is again doubled, then $p^2 : Q^2 : R^2$ is :
jeemain
math
past papers
2003
220
asked
Dec 11, 2018
by
pady_1
0
answers
An $\alpha$-particle of energy $5 \;MeV$ is scattered through $180^{\circ}$ by a fixed uranium nucleus. The distance of the closest approach is of the order of
jeemain
physics
past papers
2004
220
asked
Nov 5, 2018
by
pady_1
0
answers
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