A) \[g\sqrt{{{t}_{1}}{{t}_{2}}}\]
B) \[g\frac{{{t}_{1}}{{t}_{2}}}{{{t}_{1}}+{{t}_{2}}}\]
C) \[\frac{g\,\sqrt{{{t}_{1}}{{t}_{2}}}}{2}\]
D) \[\frac{g\,({{t}_{1}}{{t}_{2}})}{2}\]
Correct Answer: D
Solution :
[d] Let 'u' be the velocity of projection from point A Let OA = CD = h \[{{t}_{1}}\] = time taken from OA It is also equal to time taken from C to D and the time taken from 0 to B and B to \[C={{t}_{2}}\] Also \[T=\frac{2u}{g}\] \[\frac{2u}{g}={{t}_{1}}+{{t}_{2}}\] \[u=\frac{1}{2}g+[{{t}_{2}}+{{t}_{2}}]\]You need to login to perform this action.
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