1.

The top of al smooth inclined plane of length 20sqrt(2)m is connected to the edge of a well of diameter 40 m making an angle 45^(@) as shown in figure. A body is projected along the inclined plane with a velocity .u.. If the body crosses the well without falling in it then the minimum value of .u. is (g = 10 ms^(-2))

Answer»

`20 ms^(-1)`
`20sqrt(2) ms^(-1)`
`10 SQRT(2) ms^(-1)`
`15 sqrt(2) ms^(-1)`

Answer :B


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