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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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Topics: Motion in Straight Line
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The current in the coil of inductance 5H decreases at the rate of 2 A/s
- The impurity atoms with which pure silicon may be doped to make it a p-type
- An object is placed at a distance of 10 cm from a co-axial combination of two lenses
- Electrons with energy 80 keV are incident on the tungsten target of an X-ray tube.
- Three identical spheres, each of mass 3 kg are placed touching each other
Topics: Motion in Straight Line (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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