ข้อสอบ TBAT Physics พร้อมเฉลย สำหรับเตรียมตัวก่อนสอบ

TBAT Physics

1. A measuring cylinder contains water. The diagrams show the measuring cylinder before and after some of the water is poured into a beaker.

How much water has been poured into the beaker?

A) 52 cm³

B) 55 cm³

C) 51 cm³

D) 62 cm³

2. The diagram shows the speed-time graph for a car.

Which row describes the motion of the car at point X and at point Y?

A) Answer C

B) Answer A

C) Answer B

D) Answer D

3. A ball is dropped in a vacuum from a height of 4.0 m above the surface of Mars. The acceleration of the ball at a height of 2.0 m is 3.8 m/s².

What is the acceleration of the ball at a height of 1.0 m above the surface of Mars?

A) 5.7 m/s²

B) 7.6 m/s²

C) 3.8 m/s²

D) 1.9 m/s²

4. Two objects are placed on a balance, one on each side, as shown.

Which properties of the objects can be compared using the balance?

ข้อสอบ TBAT Physics - ข้อ 4

A) volume and density

B) weight and mass only

C) density only

D) weight, mass and volume

5. A rectangular swimming pool is 50 m long and 25 m wide.
It contains water at a depth of 2 m.
The density of the water is 1000 kg/m³.

What is the mass of the water in the pool?

A) 77000 kg

B) 2500 kg

C) 2.5 kg

D) 2500000 kg

6. An object is rising vertically at constant speed through water. There are three vertical forces acting on it: the weight W, the drag force D, and the upward force U.

Which diagram shows the magnitude and direction of the vertical forces acting on the object?

A) Answer B

B) Answer D

C) Answer A

D) Answer C

7. Which force produces heating during contact with a moving object?

A) electrostatic force

B) weight

C) friction

D) magnetic force

8. A metre rule is balanced at its midpoint.
It remains balanced when a 3.0 N load is hung from the 40 cm mark and a second load is hung from the 80 cm mark.

What is the weight of the second load?

A) 1.0 N

B) 9.0 N

C) 3.0 N

D) 1.5 N

9. A student measures the length of a spring. She then attaches different weights to the spring. She measures the length of the spring for each weight. The table shows her results.

What is the extension of the spring with a weight of 3.0 N attached to it?

A) 13 mm

B) 4 mm

C) 12 mm

D) 5 mm

10. Which power station produces the greatest atmospheric pollution for each unit of energy generated?

A) a hydroelectric power station

B) a wind farm

C) a nuclear power station

D) a gas fired power station

11. A 500 N weight is raised through a height of 5 cm. How much work is done by the force?

A) 10000 J

B) 2500 J

C) 100 J

D) 25 J

12. What is the unit of power?

A) newton

B) watt

C) joule

D) volt

13. The diagram shows a rectangular block of weight 16 N. It is resting on a flat surface.

What is the pressure at the base of the block due to its weight?

A) 320 N/cm²

B) 0.36 N/cm²

C) 0.089 N/cm²

D) 0.80 N/cm²

14. A piston traps a mass of gas inside a cylinder. Initially, the piston is halfway along the length of the cylinder. The piston is now moved towards the open end of the cylinder. The temperature of the gas remains constant.

How are the density and the pressure of the gas affected by moving the piston?

A) Answer A

B) Answer C

C) Answer D

D) Answer B

15. Which statement describes what happens to air particles when the air is heated?

A) The particles move more slowly.

B) The particles move closer together.

C) The particles vibrate faster.

D) The particles move more quickly.

16. What happens when the temperature of a liquid increases?

A) The volume of the liquid increases, making the liquid more dense.

B) The volume of the liquid increases, making the liquid less dense.

C) The mass of the liquid increases, making the liquid more dense.

D) The mass of the liquid increases, making the liquid less dense.

17. In which states of matter can thermal energy be transferred by convection?

A) in gases, liquids and solids

B) in gases and solids only

C) in gases and liquids only

D) in liquids only

18. A transverse wave moves along a rope.
The diagram shows the position of the rope at one particular time.

Which two labelled pointed are one wavelength apart?

A) W and X

B) Y and Z

C) W and Z

D) X and Z

19. The diagram shows a ray of light being reflected from a plane mirror.

Which row identifies the angles of incidence and reflection?

A) Answer D

B) Answer C

C) Answer A

D) Answer B

20. Blue light has a typical wavelength of 5.0 x 10-7 m and frequency of 0.60 x 1015 Hz.

Which row gives a typical wavelength and frequency for red light?

A) Answer A

B) Answer D

C) Answer C

D) Answer B

21. Which diagram shows what happens when a ray of white light passes through a prism?

TBAT Physics q21

A) Answer B

B) Answer A

C) Answer C

D) Answer D

22. A television (TV) station transmits a signal to a television receiving dish. The television has an on/off indicator light. The television is switched on by a remote control which changes the indicator light from red to green.

Which electromagnetic wave used in these actions has the longest wavelength?

TBAT Physics q22

A) Answer A

B) Answer B

C) Answer D

D) Answer C

23. A sound wave has a wavelength of 0.024 m.

What is the frequency of this sound wave and is it audible to humans?

TBAT Physics q23

A) Answer C

B) Answer B

C) Answer D

D) Answer A

24. The diagram shows a bar magnet at rest on a smooth horizontal surface. A length of soft-iron wire is held parallel to the magnet.

The wire is released. What happens?

A) The wire’s centre stays in its present and the wire rotates through 90 in a clockwise direction.

B) The wire moves towards the magnet.

C) The wire’s centre stays in its present position and the wire rotates through 90 in an anticlockwise direction.

D) The wire moves away from the magnet.

25. A man walks across a carpet. He becomes negatively charged by friction with the carpet.

What happens as he touches a metal object connected to the Earth?

A) The man gains protons.

B) The man loses electrons.

C) The man gains electrons.

D) The man loses protons.

26. A laboratory has a standard wire of known resistance. It also has other wires, made from the same material as the standard wire, but of different lengths and diameters.

Which wire would definitely have an resistance of less than the standard wire?

TBAT Physics q26

A) Answer B

B) Answer C

C) Answer A

D) Answer D

27. The diagram shows a circuit.

Which energy transfers occur?

TBAT Physics q27

A) battery -> surrounding -> air -> battery

B) surrounding -> air -> lamp -> battery

C) battery -> lamp -> surrounding air

D) lamp -> surrounding air -> battery

28. X, Y and Z are lamps.

In which lamps is there a current?

TBAT Physics q28

A) Answer C

B) Answer D

C) Answer B

D) Answer A

29. The diagram shows a circuit.

Which change causes the bulb in the circuit to become brighter?

TBAT Physics q29

A) a decrease in temperature

B) an increase in temperature

C) an increase in light intensity

D) a decrease in light intensity

30. The current in a kettle is 10 A and the kettle is protected by a 13 A fuse. The owner of the kettle replaces the 13 A fuse with a 3 A fuse.

What happens when the kettle is switched on?

A) The fuse does not melt but the kettle fails to work.

B) The fuse melts and the kettle might be damaged.

C) The fuse melts and the kettle is undamaged.

D) The fuse does not melt and the kettle works correctly.

TBAT Physics

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