A) 2 cm
B) 6 cm
C) 4 cm
D) 1 cm
Correct Answer: D
Solution :
From displacement method size of object, \[O=\sqrt{{{I}_{1}}{{I}_{2}}}\] Here, \[O=3\,cm,{{I}_{1}}=9\,cm\] \[\therefore \] \[3=\sqrt{9{{I}_{2}}}\] or \[{{I}_{2}}=1\,cm\]You need to login to perform this action.
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