A) \[\sqrt{927/27}\]times the earlier value
B) Same as before
C) Halved
D) Doubled
Correct Answer: D
Solution :
\[{{U}_{2}}={{U}_{1}}\sqrt{\frac{{{T}_{2}}}{{{T}_{1}}}}={{U}_{1}}\sqrt{\frac{1200}{300}}={{U}_{1}}\times 2\] r.m.s. velocity will be doubled.
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