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A particle having mass m and charge q is...

A particle having mass m and charge q is projected at an angle of 75° to the horizontal with a speed u. A uniform electric field `E=(mg)/(q)` exists in horizontal direction. Find the time after projection when the velocity of particle makes an angle of 45° with horizontal.

Text Solution

Verified by Experts

The correct Answer is:
`u/(2sqrt(2g))`
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