A $2 \,m$ long rod of radius $1 \,cm$ which is fixed from one end is given a twist of $0.8$ radians. The shear strain developed will be
A$0.002$
B$0.004$
C$0.008$
D$0.016$
AIIMS 2019, Medium
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B$0.004$
b The shear strain generated in the rod given as,
$r \theta=L \phi$
$10^{-2} \times 0.8=2 \times \phi$
$\phi=0.004$
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