NEET Physics: Work Energy and Power — MCQ Test 6

Q6. A \( 6 \, \text{kg} \) block slides down a frictionless incline from \( 10 \, \text{m} \) height. What is its speed at the bottom? (Take \( g = 10 \, \text{m/s}^2 \))

Q7. A \( 5 \, \text{kg} \) mass at \( 20 \, \text{m/s} \) collides elastically with an identical stationary mass. What is the speed of the first mass after collision?

Q8. A \( 8 \, \text{kg} \) mass falls from \( 5 \, \text{m} \) onto a spring (\( k = 2500 \, \text{N/m} \)). What is the maximum compression? (Take \( g = 10 \, \text{m/s}^2 \))

Q9. A motor lifts a \( 2000 \, \text{kg} \) load at \( 2.5 \, \text{m/s} \) against \( 6000 \, \text{N} \) friction. What is the power? (Take \( g = 10 \, \text{m/s}^2 \))

Q10. A \( 900 \, \text{kg} \) car at \( 14 \, \text{m/s} \) hits a spring (\( k = 6 \times 10^3 \, \text{N/m} \)). What is the maximum compression?

NEET PhysicsWork Energy and Power

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A force \( F = 10x^2 \, \text{N} \) acts from \( x = 0 \) to \( x = 1 \, \text{m} \). What is the work done?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Work Energy and Power. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Medium
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Key concepts covered in this specific test include Constant, Compressed, Potential, Collides, Elastically, and Fraction.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. A force \( F = 10x^2 \, \text{N} \) acts from \( x = 0 \) to \( x = 1 \, \text{m} \). What is the work done?

  • A. 3 J
  • B. 3.3 J
  • C. 3.6 J
  • D. 4 J

Q2. A spring with constant \( k = 200 \, \text{N/m} \) is compressed by \( 0.1 \, \text{m} \). What is the potential energy stored in the spring?

  • A. 0.5 J
  • B. 1 J
  • C. 1.5 J
  • D. 2 J

Q3. A \( 8 \, \text{kg} \) mass is lifted \( 4 \, \text{m} \) in \( 2.5 \, \text{s} \) at constant speed. What is the power? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. 120 W
  • B. 128 W
  • C. 135 W
  • D. 140 W

Q4. A neutron (\( 1 \, \text{u} \)) moving at \( 2 \times 10^6 \, \text{m/s} \) collides elastically with a carbon nucleus (\( 12 \, \text{u} \)). What fraction of its kinetic energy is retained?

  • A. 0.65
  • B. 0.72
  • C. 0.78
  • D. 0.85

Q5. A \( 3 \, \text{kg} \) object is dropped from \( 17 \, \text{m} \). What is its speed just before hitting the ground? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. 18 m/s
  • B. 18.4 m/s
  • C. 19 m/s
  • D. 19.5 m/s

+ 5 more questions in the actual test

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