PHYSICS PAST QUESTIONS 2 (JAMB/ WAEC/ NECO)

#1. In storing magnets, keepers are used to

#2. Two magnets are used to magnetize a soft iron bar PQ as illustrated in the diagram given. The correct polarity at P and Q respectively

Select all that apply:

#3. Which of the following statements is not correct about steel and soft iron?

#4. What determines the polarity at the ends of an electromagnet? The

#5. The phenomenon by which two light atomic nuclear combine to form a heavy nuclide with the release of energy is known as

#6. In a p-type semiconductor, the

#7. Let Δx be the uncertainty in the measurements of position and Δp the uncertainty in measurement of momentum. The uncertainty principle relation is given as

#8. Two objects of masses 80kg and 50kg are separated by a distance of 0.2m. If the gravitational constant is 6.6 x 10-11Nm kg, calculate the gravitational attraction between them.

#9. Mercury is a better barometric fluid than water because i. it needs no colouring ii. its density is many times greater than that of water iii. it does not wet glass iv. it has a high vapour pressure v. it has a high boiling point. Which of the above statements are true?

#10. The density of a solid is defined as the

#11. Which of the following is true for the image formed by a convex mirror? i. the image is always virtual ii. the image is always erect iii. the image lies between pole and focus iv. the image is never magnified v. the focus length is negative

#12. A string is sustaining a stationary wave when

#13. For the correction of myopic defects in the human eye we require

#14. Of the following which is different from the other?

#15. An object is positioned between two plane mirrors inclined at right angles to each other. The object is 1 unit from each mirror. The number of images formed is

Select all that apply:

#16. The amount of heat required to raise the temperature of a body is

#17. Two lamps are rated 40W and 220V each are connected in series. The total power dissipated in both lamps is

#18. In the diagram, what is the value of W?

Select all that apply:

#19. The equivalent capacitance for the circuit drawn above is

Select all that apply:

A) 4µf

B) 2µf

C) 12µf

D) 13µf

#20. A string is sustaining a stationary wave when

#21. For the correction of myopic defects in the human eye we require

#22. Of the following which is different from the other?

#23. The net charge on the atom is zero because

#24. The visible part of light consists of the following colours

#25. An object is positioned between two plane mirrors inclined at right angles to each other. The object is 1 unit distance from each mirror, the number of images formed is

#26. The angular dispersion of a prism depends on

#27. Which of the following is true for the image formed by a convex mirror? i. the image is always virtual ii. the image is always erect iii. the image lies between pole and focus iv. the image is never magnified v. the focus length is negative