NUST NET Physics — Work and Energy
Work and Energy is part of the FSc Physics course that NUST NET-Engineering draws on (Physics is 60 of the 200 MCQs). It breaks into 2 subtopics, and we hold 64 NET-pattern practice MCQs on it, each with a written explanation. Tap a subtopic below to practise just that.
Subtopics (2)
How Work and Energy is tested
Across the 8 NET-pattern papers on ParhaiKrlo, Work and Energy accounts for 24 questions. It appears in all 8, about 3 questions a paper. The heaviest was NUST NET Past Paper 07, with 3 questions.
| Paper | Questions |
|---|---|
| NUST NET Past Paper 07 | 3 |
| NUST NET Past Paper 08 | 3 |
| NUST NET Past Paper 05 | 3 |
| NUST NET Past Paper 06 | 3 |
| NUST NET Past Paper 03 | 3 |
| NUST NET Past Paper 04 | 3 |
| NUST NET Past Paper 01 | 3 |
| NUST NET Past Paper 02 | 3 |
Work and Energy MCQs from the NET-pattern papers
Try each one before opening the answer. Each comes with a short explanation.
- Q1 · NUST NET Past Paper 07 · Work and Energy
A force of 10 N moves a body 5 m, acting at 60° to the direction of motion. The work done is:
- A.50 J
- B.25 J
- C.43.3 J
- D.5 J
Show answer
Answer: B. 25 J — W = Fd cos θ = 10 × 5 × cos 60° = 25 J.
- Q2 · NUST NET Past Paper 08 · Work and Energy
A spring of spring constant 200 N/m is compressed by 0.1 m. The energy stored in it is:
- A.2 J
- B.10 J
- C.20 J
- D.1 J
Show answer
Answer: D. 1 J — U = ½kx² = ½ × 200 × 0.01 = 1 J.
- Q3 · NUST NET Past Paper 05 · Work and Energy
The work done in lifting a 5 kg mass vertically through 3 m is:
- A.15 J
- B.150 J
- C.1500 J
- D.50 J
Show answer
Answer: B. 150 J — W = mgh = 5 × 10 × 3 = 150 J.