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In the time taken by the projectile to r...

In the time taken by the projectile to reach from `A` to `B` is `t`. Then the distance `AB` is equal to.
.

A

`(ut)/(sqrt(3))`

B

`sqrt(3ut)/(2)`

C

`sqrt(3)ut`

D

`2ut`

Text Solution

Verified by Experts

The correct Answer is:
D
Heat given out by hot body
`=(2xx540)+2xx(100-theta)xx1`
`=1080+200-2theta`
`=(1280-2theta)cal" "....(i)`
Heat absorbed by cold body
`=(12xx80)+12xx(theta-0)xx1`
`=(960+12theta)"cal"" "......(ii)`
(i)=(ii)
`implies 1280-2theta=960+12theta`
`1280-960=14theta`
`therefore " "theta=(1280-960)/(14)=(320)/(14)=22.86^(@)C`
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