Grade 10 Physics practice questions – Lebanese curriculum

Q: Where do these Grade 10 Physics questions come from?

They are a sample from EduRise's Grade 10 Physics question bank (1,560 questions across 15 chapters), written to follow the Lebanese curriculum. Each chapter on EduRise has its own practice set and a timed exam.

Q: Are the answers explained?

Yes. Every question on EduRise shows the correct answer and an explanation after you answer, in practice mode and in the exam review.

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Question 1

Which material is an electric conductor?

Accepted Answer

copper. Metals contain free electrons.

Question 2

A body becomes positively charged when it:

Accepted Answer

loses electrons. Only electrons move; losing them leaves a deficit of negative charge.

Question 3

On an oscilloscope, a DC voltage appears as:

Accepted Answer

a horizontal line moved up or down from the centre. The voltage is constant in time.

Question 4

Changing the reference point changes the voltage between two points.

Accepted Answer

False. False: only the potentials change; their difference stays the same.

Question 5

A current flows only if the circuit is:

Accepted Answer

closed and contains a generator. An open circuit has no current.

Question 6

The drift velocity of electrons in a wire is close to the speed of light.

Accepted Answer

False. False: it is about 0.1 mm/s; only the establishment of the current is that fast.

Question 7

A current of 0.30 A flows through a resistor R = 100 Ω. What is the voltage across it?

Accepted Answer

30.0 V. U = R I = 100 × 0.30 = 30.0 V.

Question 8

A current of 0.50 A flows through a resistor R = 100 Ω. What is the voltage across it?

Accepted Answer

50.0 V. U = R I = 100 × 0.50 = 50.0 V.

Question 9

The emf of a generator is the voltage between its terminals when:

Accepted Answer

it delivers no current. U_PN = E − r × 0 = E.

Question 10

Two identical cells in series have twice the emf of one cell.

Accepted Answer

True. True: E_eq = 2E (and r_eq = 2r).

Question 11

The relation between period and frequency is:

Accepted Answer

f = 1/T. The frequency is the number of cycles per second.

Question 12

Sound can travel through a vacuum.

Accepted Answer

False. False: sound is a mechanical wave; it needs a medium.

Question 13

Water waves travel more slowly in:

Accepted Answer

shallow water. The speed of water waves decreases with depth.

Question 14

The change of direction of a wave when it passes into a new medium is called:

Accepted Answer

refraction. Refraction comes from the change of speed.

Question 15

The speed of light in vacuum is about:

Accepted Answer

3.0 × 10⁸ m/s. c = 3.0 × 10⁸ m/s = 3.0 × 10⁵ km/s.

Grade 10 Physics Questions and Answers

15 Grade 10 Physics practice questions

1. Which material is an electric conductor?

2. A body becomes positively charged when it:

3. On an oscilloscope, a DC voltage appears as:

4. Changing the reference point changes the voltage between two points.

5. A current flows only if the circuit is:

6. The drift velocity of electrons in a wire is close to the speed of light.

7. A current of 0.30 A flows through a resistor R = 100 Ω. What is the voltage across it?

8. A current of 0.50 A flows through a resistor R = 100 Ω. What is the voltage across it?

9. The emf of a generator is the voltage between its terminals when:

10. Two identical cells in series have twice the emf of one cell.

11. The relation between period and frequency is:

12. Sound can travel through a vacuum.

13. Water waves travel more slowly in:

14. The change of direction of a wave when it passes into a new medium is called:

15. The speed of light in vacuum is about:

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