Try 10 free Physics questions below, each with the answer explained. When you are ready, practise all 2,060 on a timed CBT screen.
The NECO SSCE (June/July) is the National Examinations Council's final exam for Nigerian secondary school students. Like WAEC, each subject has an objective paper and a theory paper, and the syllabus covers the same topics.
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Which of these is NOT a vector quantity: acceleration, displacement, energy or weight?
Answer: B. energy has magnitude only, so it is a scalar.
A car accelerates uniformly from 16 m/s to 58 m/s in 6 s. Find its acceleration.
Answer: D. a = (v − u) ÷ t = (58 − 16) ÷ 6 = 7 m/s².
A spring of force constant 20 N/m is stretched by 15 cm. Find the force applied.
Answer: D. F = ke = 20 × 0.15 = 3 N (convert cm to m first).
A force of 29 N acts 50 cm from the pivot of a balanced lever. What force acting 50 cm on the other side balances it?
Answer: C. Principle of moments: 29 × 50 = F × 50, so F = 29 N.
A machine uses 550 J of energy and does 275 J of useful work. Find its efficiency.
Answer: B. Efficiency = output ÷ input × 100 = 275 ÷ 550 × 100 = 50%.
A coin at the bottom of a tank of liquid 32 cm deep appears to be 24 cm below the surface. Find the refractive index of the liquid.
Answer: D. n = real depth ÷ apparent depth = 32 ÷ 24 = 1.33.
What does a pyrometer measure?
Answer: B. A pyrometer measures very high temperatures.
One common use of microwaves is
Answer: A. Cooking food and satellite communication uses microwaves.
Heat from the Sun reaches the Earth mainly by
Answer: C. Space is a vacuum, and only radiation can travel through a vacuum.
The becquerel is the SI unit of
Answer: B. The SI unit of activity of a radioactive source is the becquerel.
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Create a free accountQuestions in the MyGradePrep bank for each topic.
| Topic | Questions |
|---|---|
| Motion | 346 |
| Work, energy and power | 300 |
| Electricity | 254 |
| Waves | 142 |
| Scalars and vectors | 121 |
| Force | 120 |
| Moments | 120 |
| Current electricity | 120 |
| Elasticity | 100 |
| Pressure | 89 |
| Heat | 61 |
| Density | 60 |
| Momentum | 60 |
| Machines | 60 |
| Light | 40 |
| Units | 33 |
| Measurement | 25 |
| Vectors | 7 |