| ⇦ | 
| ⇨ |
A spring when stretched by 2mm containing energy 4 J. If it is stretched by 10 mm, its potential energy becomes equal to
Options
(a) 4 J
(b) 54 J
(c) 415 J
(d) None of these
Correct Answer:
None of these
Explanation:
E₁ = 1/2 Kx₁², E₂ = 1/2 Kx₂²
E₂ / E₁ = x₂² / x₁² = (10/2)² =25
E₂ = 25 E₁
But E₁ = 4 J
E₂ = 100 J
This alternative is not given. Hence answer is ‘none’
Related Questions: - On the horizontal surface of a truck a block of mass 1 kg is placed (µ=0.6) and truck
- A cyclist is riding with a spped of 27 km/h.As he approaches a circular turn
- Two capacitors of capacitances 2 μF and 3 μF are joined in series.
- An electric dipole is placed at an angle 30°with an electric field intensity 2×10⁵N/C.
- The displacement of a particle varies according to the relation x=4 (cos π t + sin π t)
Topics: Work Energy and Power
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- On the horizontal surface of a truck a block of mass 1 kg is placed (µ=0.6) and truck
- A cyclist is riding with a spped of 27 km/h.As he approaches a circular turn
- Two capacitors of capacitances 2 μF and 3 μF are joined in series.
- An electric dipole is placed at an angle 30°with an electric field intensity 2×10⁵N/C.
- The displacement of a particle varies according to the relation x=4 (cos π t + sin π t)
Topics: Work Energy and Power (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply