A) four times
B) thrice
C) once
D) twice
Correct Answer: A
Solution :
The formula for time of flight and horizontal ray is given by as \[g{{T}^{2}}=2R\,\tan \,\alpha \Rightarrow R\propto {{T}^{2}}\] ...(1) From the relation (1), if T is doubled then R will be four times
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