A stone dropped from a building of height 
and it reaches after 
seconds on earth. From the same building if two stones are thrown (one upwards and other downwards) with the same velocity u and they reach the earth surface after 
and 
seconds respectively, then
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
If a stone is dropped from height h
then 
…(i)
If a stone is thrown upward with velocity u then
…(ii)
If a stone is thrown downward with velocity u then
…(iii)
From (i) (ii) and (iii) we get
…(iv)
…(v)
Dividing (iv) and (v) we get
or 
By solving 
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