2020 JAMB PHYSICS PAST QUESTIONS AND ANSWERS

Report a question

You cannot submit an empty report. Please add some details.
0%
Created by Jamb Tutor

Jamb Physics

2020 JAMB PHYSICS PAST QUESTIONS AND ANSWERS

1 / 38

Category: JAMB Physics 2020

1. A few grains of table salt dissolved in cold water over time. Why?

2 / 38

Category: JAMB Physics 2020

2. Force required for an object of mass $m$, velocity $v$ in a circle of radius $r$:

3 / 38

Category: JAMB Physics 2020

3. Recoil speed of a machine gun firing a 50 g bullet at 100 m/s (mass gun = 5 kg):

4 / 38

Category: JAMB Physics 2020

4. Length of pendulum increased by 4x. Period increase by?

5 / 38

Category: JAMB Physics 2020

5. Anomalous expansion of water occurs within which temperature range?

6 / 38

Category: JAMB Physics 2020

6. Which statements about radioactivity are true?

7 / 38

Category: JAMB Physics 2020

7. Temperature and heat confusion: which statements apply?

8 / 38

Category: JAMB Physics 2020

8. Key K is closed in the circuit. What happens to current?

9 / 38

Category: JAMB Physics 2020

9. Which use of X-rays is incorrect?

10 / 38

Category: JAMB Physics 2020

10. Natural radioactivity emits which particles?

11 / 38

Category: JAMB Physics 2020

11. A moving solid source produces sound heard differently by a stationary listener. This phenomenon is?

12 / 38

Category: JAMB Physics 2020

12. What describes high tension transmission?

13 / 38

Category: JAMB Physics 2020

13. Cost of running five 50W lamps and four 100W lamps for 10 hours (energy at 2 Kobo per kWh):

14 / 38

Category: JAMB Physics 2020

14. Mass of a proton is approximately equal to that of which particle?

15 / 38

Category: JAMB Physics 2020

15. A transformer with 300 primary turns and 30 secondary turns, input voltage of 100V. Output voltage?

16 / 38

Category: JAMB Physics 2020

16. A solid weighs 4.8g in air, 2.8g in water, and 3.2g in kerosene. Density ratio solid:kerosene?

17 / 38

Category: JAMB Physics 2020

17. Measurement of a metal rod using vernier callipers. Likely reading?

18 / 38

Category: JAMB Physics 2020

18. When a sound wave enters water from air, what changes occur?

19 / 38

Category: JAMB Physics 2020

19. Why is a convex mirror used as a driving mirror?

20 / 38

Category: JAMB Physics 2020

20. Two mirrors at an angle. Emergent ray deviated by how much?

21 / 38

Category: JAMB Physics 2020

21. A magnetic needle at Earth’s magnetic pole and equator. Angles to horizontal?

22 / 38

Category: JAMB Physics 2020

22. Hydrometer measures what?

23 / 38

Category: JAMB Physics 2020

23. Three forces acting at a point in equilibrium. Which equation(s) hold?

24 / 38

Category: JAMB Physics 2020

24. Refractive index of liquid = 1.5. Velocity of light in vacuum = $3.0 × 10^8$ m/s. Velocity in liquid?

25 / 38

Category: JAMB Physics 2020

25. Echo received after 3.5s and 2.5s. Speed of sound = 250 m/s. How much closer?

26 / 38

Category: JAMB Physics 2020

26. Defects of vision: short-sight and long-sight. Correct statements?

27 / 38

Category: JAMB Physics 2020

27. Total internal reflection: conditions for occurrence?

28 / 38

Category: JAMB Physics 2020

28. Linear expansivity of brass = $2 × 10^{-5}$ °C$^{-1}$. Volume at 100°C if initial = 10 cm³?

29 / 38

Category: JAMB Physics 2020

29. Mercury thermometer: lower and upper fixed points = 210 mm. Temperature at 49 mm?

30 / 38

Category: JAMB Physics 2020

30. Heat supplied to $10^{-2}$ kg of liquid: 100W for 20 s. Specific heat capacity?

31 / 38

Category: JAMB Physics 2020

31. Pressure at depths: Diver G at 20 m and Diver H at 40 m. Ratio of pressures $P_2 / P_1$?

32 / 38

Category: JAMB Physics 2020

32. Block-and-tackle pulley: Efficiency = 40%, effort W supports load 120 N. What is W?

33 / 38

Category: JAMB Physics 2020

33. Cooling curve: Molten naphthalene cools. 80°C is known as?

34 / 38

Category: JAMB Physics 2020

34. Circuit diagram: Resistance R is?

35 / 38

Category: JAMB Physics 2020

35. Which instrument consumes highest current? Electric iron, TV, torch, immersion heater?

36 / 38

Category: JAMB Physics 2020

36. Diagram of wave tube: Which setup shows length equals one wavelength?

37 / 38

Category: JAMB Physics 2020

37. Electromagnetic spectrum: Identify correct pair. Radio, sound, gamma, water waves?

38 / 38

Category: JAMB Physics 2020

38. Substance half-life = 3 min. Count rate after 6 min = 400. What was initial count rate?

Your score is

The average score is 0%

0%

Leave a Comment

Your email address will not be published. Required fields are marked *

error: Content is protected !!