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A boy standing at the top of a tower of 20m height drops a stone. Assuming g = 10 ms⁻², the velocity with which it hits the ground is
Options
(a) 10 m/s
(b) 20 m/s
(c) 40 m/s
(d) 5 m/s
Correct Answer:
20 m/s
Explanation:
Here, u= 0 We have, v² = u² + 2gh
v = √(2gh) ⇒ √(2 x 10 x20)
= 20 m/s
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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
- A black body is at 727⁰C. It emits energy at a rate which is proportional to
- The cadmium rods are used in nuclear reactor to
- 4 point charges each +q is placed on the circumference of a circle
- A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal
- An air core solenoid has 1000 turns and is one meter long. Its cross sectional area
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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