Willer Academy: Physics Test #4 – Work & Energy

Chapter: NCERT Class 9 – Physics | Mode: NEET Foundation | Time: 10 min

📌 Instructions:
➤ Choose the most suitable answer in each MCQ.
➤ +4 for correct, –1 for wrong, 0 for unattempted.
➤ Submit the test to view your score and learning insights.

1. Work is said to be done only when:
a) Force is applied b) Displacement occurs c) Both force and displacement in same direction d) Object is very heavy

2. The SI unit of work is:
a) Joule b) Newton c) Watt d) Erg

3. A man lifts a box with 20 N force to 3 m height. Work done is:
a) 23 J b) 60 J c) 17 J d) 0 J

4. Power is defined as:
a) Force × Distance b) Work ÷ Time c) Force ÷ Displacement d) Energy × Time

5. One kilowatt hour (kWh) is equal to:
a) 100 J b) 1,000 J c) 3.6 × 10⁶ J d) 360 J

6. Potential energy depends on:
a) Velocity b) Mass and height c) Displacement d) Time

7. Kinetic energy of body increases with:
a) Increase in speed b) Decrease in mass c) Decrease in velocity d) Rest

8. SI unit of Power is:
a) Newton b) Joule c) Watt d) kg

9. Which of these is NOT a form of mechanical energy?
a) Thermal b) Potential c) Kinetic d) Both b and c

10. Law of Conservation of Energy implies:
a) Energy can be created or destroyed b) Energy remains constant in a closed system c) No energy conversion possible d) Only potential energy is conserved

📊 Your Score:

👉 Type “N” to get: Chemistry Test #1 – Matter in Our Surroundings
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