COMSATS Physics — Work, Energy and Power
Work, Energy and Power is part of the Physics section of the NTS NAT-IE test COMSATS admits on (10 of the 90 MCQs). It breaks into 2 subtopics, and we hold 24 NAT-pattern practice MCQs on it, each with a written explanation. Tap a subtopic below to practise just that.
Subtopics (2)
How Work, Energy and Power is tested
Across the 7 NAT-pattern papers on ParhaiKrlo, Work, Energy and Power accounts for 7 questions. It appears in all 7, about 1 questions a paper. The heaviest was COMSATS Past Paper 07, with 1 question.
| Paper | Questions |
|---|---|
| COMSATS Past Paper 07 | 1 |
| COMSATS Past Paper 06 | 1 |
| COMSATS Past Paper 05 | 1 |
| COMSATS Past Paper 04 | 1 |
| COMSATS Past Paper 03 | 1 |
| COMSATS Past Paper 02 | 1 |
| COMSATS Past Paper 01 | 1 |
Work, Energy and Power MCQs from the NAT-pattern papers
Try each one before opening the answer. Each comes with a short explanation.
- Q1 · COMSATS Past Paper 07 · Work, Energy and Power
A 60 kg person climbs 10 m of stairs in 20 s. What is the person's power output? (g = 10 m/s²)
- A.30 W
- B.300 W
- C.120 W
- D.6,000 W
Show answer
Answer: B. 300 W — Work = mgh = 6,000 J; P = 6,000 ÷ 20 = 300 W.
- Q2 · COMSATS Past Paper 06 · Work, Energy and Power
A force of 50 N moves a box 4 m in the direction of the force. How much work is done?
- A.200 J
- B.54 J
- C.12.5 J
- D.46 J
Show answer
Answer: A. 200 J — W = Fd = 50 × 4 = 200 J.
- Q3 · COMSATS Past Paper 05 · Work, Energy and Power
What is the kinetic energy of a 4 kg body moving at 5 m/s?
- A.20 J
- B.10 J
- C.100 J
- D.50 J
Show answer
Answer: D. 50 J — KE = ½mv² = ½ × 4 × 25 = 50 J.