A boat crosses a river of width 200m in the shortest time and is found to experience a drift of 100m in reaching the opposite bank. The time taken now is ‘t’. If the same boat is to cross the river by shortest path, the time taken to cross will be

see full answer

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

2 t

2 t3

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

t1=dVb , drift x=Vr×dVb ∴100=VrVb×200⇒VrVb=12 t2=dVb2−Vr2⇒t1t2=1−(VrVb)2=32

Watch 3-min video & get full concept clarity