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A dust packet is dropped from 5th storey of a multi-storeyed building.In the first second of its free fall another dust packet is dropped from 7th storey 15m below the 9th storey.If both packets reach the ground at same time,then height of the building is
Options
(a) 25m
(b) 15m
(c) 20m
(d) 16m
Correct Answer:
20m
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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- If the r.m.s. velocity of a gas is v, then
- Two sources P and Q produce notes of frequency 660 Hz each.
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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