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Assertion In projectile motion, if time of flight is 4s, then maximum height will be 20 m. (Take, `g = 10 ms^(-2))` Reason Maximum height `= (gT)/(2)`.A. If both Asseration and Reason are correct and Reason is the correct explanation of AssertionB. If both Assertion and Reason are correct but Reason is not the correct explanation of AssertionC. If Assertion is true but Reason is falseD. If Assertion is false but Reason is true |
Answer» Correct Answer - C `H = (u^(2)sin^(2)theta)/(2g)` and `T = (2u sin theta)/(g)` `:. u sin theta = (gT)/(2)` `:.` Maximum height, `H = ((g^(2)T^(2)//4))/(2g) = (gT^(2))/(8) = (g(4)^(2))/(8) = 20m` |
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