NEET Physics: Work Energy and Power — MCQ Test 11

Q6. A \( 1.8 \, \text{kg} \) pendulum bob completes a vertical circle of radius \( 2 \, \text{m} \). What is the speed at the top? (Take \( g = 10 \, \text{m/s}^2 \))

Q7. A \( 45 \, \text{g} \) bullet at \( 1100 \, \text{m/s} \) emerges from a block with \( 50\% \) of its initial kinetic energy. What is its emergent speed?

Q8. A \( 10 \, \text{kg} \) mass is lifted \( 8 \, \text{m} \) in \( 5 \, \text{s} \) at constant speed. What is the power delivered? (Take \( g = 10 \, \text{m/s}^2 \))

Q9. A \( 12 \, \text{kg} \) block is pushed with \( 60 \, \text{N} \) over \( 5 \, \text{m} \) on a frictionless surface, starting from rest. What is its final speed?

Q10. A \( 0.9 \, \text{g} \) drop falls from \( 150 \, \text{m} \) and hits the ground at \( 13 \, \text{m/s} \). What is the work done by air resistance? (Take \( g = 10 \, \text{m/s}^2 \))

NEET Physics — Work Energy and Power

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Medium

A force starts at \( 50 \, \text{N} \) over \( 6 \, \text{m} \), then decreases linearly to \( 10 \, \text{N} \) over \( 4 \, \text{m} \). What is the total 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.

0
Easy
10
Medium
0
Hard

Key concepts covered in this specific test include Decreases, Linearly, Resistance, Compressed, Potential, and Frictionless.

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 starts at \( 50 \, \text{N} \) over \( 6 \, \text{m} \), then decreases linearly to \( 10 \, \text{N} \) over \( 4 \, \text{m} \). What is the total work done?

  • A. 400 J
  • B. 420 J
  • C. 440 J
  • D. 460 J

Q2. A \( 1 \, \text{g} \) drop falls from \( 800 \, \text{m} \) and hits the ground at \( 30 \, \text{m/s} \). What is the work done by air resistance? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. -8 J
  • B. -7.55 J
  • C. -7 J
  • D. -6.5 J

Q3. A spring (\( k = 300 \, \text{N/m} \)) is compressed by \( 0.2 \, \text{m} \). What is the potential energy stored?

  • A. 5 J
  • B. 6 J
  • C. 7 J
  • D. 8 J

Q4. A \( 10 \, \text{kg} \) block is pushed with \( 50 \, \text{N} \) over \( 8 \, \text{m} \) on a frictionless surface, starting from \( 1 \, \text{m/s} \). What is its final speed?

  • A. 8 m/s
  • B. 9 m/s
  • C. 10 m/s
  • D. 11 m/s

Q5. A motor lifts a \( 2000 \, \text{kg} \) load at \( 3.5 \, \text{m/s} \) against \( 4000 \, \text{N} \) friction. What is the power? (Take \( g = 10 \, \text{m/s}^2 \))

  • A. 80 kW
  • B. 84 kW
  • C. 88 kW
  • D. 92 kW

+ 5 more questions in the actual test

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