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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
- In which of the following systems will the radius of the first orbit (n=1) be minimum?
- A round uniform body of radius R, mass M and moment of inertia I rolls down
- The magnetic field at the centre of a circular coil carrying current I ampere is B.
- In potentiometer experiment, a cell of emf 1.25V gives balancing length of 30 cm
- The approximate depth of an ocean is 2700 m. The compressibility of water is
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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