Jamb 2018 Physics Possible Questions And Answers Expo Runz

Jamb 2018 Physics Possible Questions And Answers Expo Runz

Jamb 2018 Physics Possible Questions And Answers Expo Runz

  • Physics possible questions and answers pick your choice and engage your emotion

questions from all the Jamb Physics topics.


The 1000 points will cover every topic in Jamb

Physics. However, the key points will not be

arranged topic by topic. As time goes on, I will

work on hot key point series on Jamb Biology,

Chemistry, Mathematics, CRS and the Use of

English. It will be wise you follow up series. Now,

lets go straight to business…..

Key Points on Jamb Physics hot topics (1 to 10)

1) The classification of Wave are:

Mechanical Wave (E.g Water and Sound


Electromagnetic Wave (E.g Gamma and X-


Progressive/Travelling Wave (Water And


Stationary/Standing Wave (Nodes And


Longitudinal Wave (E.g Sound Waves)

Transverse Wave (E.g Waves in Pipe and


2) Stationary Wave occur when two interfering

waves of the same amplitude and frequency

travel in opposite direction.


3) Velocity of Sound In:

Air is 332m/s

Water (Liquid) is 1435m/s

Iron (Solid) is 5000m/s

4) The velocity of Echo is equal to the total

distance traveled by the sound divided by the

time taken.

5) The quality of sound depends on the number

of overtones or harmonics. It makes it possible

to distinguish between two instruments playing

the same note.

6) Vibration can either be free, forced or


7) Eclipse occurs due to the travel of light in a

straight line.

8) The application of plane mirrors are

Periscope, Kaleidoscope and Sextant.

9) Refraction occurs at constant frequency.

10) Hydrogen spectrum has all colors of white

light, Sodium vapour has yellow line (spectrum)

and Mercury vapour has Blue and Green


Hot Points And Topics In Jamb Physics (10 to


11) Another word for electrolysis is the chemical

effect of current.

12) Passage of current through liquid doesn’t

obey Ohms law.

13) Magnetic fields are oval in shape.

14) Angle of dip is 90 degree at the magnetic

poles and zero at the equator.

15) The strength of Magnet is greatest at the


16) All electric charges are multiples of the

charges of an electron.

17) Factors affecting capacitance are: Area of

plates, distance between the plates and

dielectrics between the plates.

18) Examples of dielectric materials are Paraffin

wax, Polythene, Ebonite and Glass.

19) Sliding friction are less than limiting friction.

20) EMF is the algebraic sum of potential

difference acting in a circuit.

Hot Topics in Jamb Physics (20 to 30)

21) Electromagnetism is the production of

current from Magnet.

22) In a closed circuit, the induced EMF gives

rise to induced current.

23) Eddy current is used in damping moving coil,

speedometers and induction coil.

24) Transformer steps up or steps down voltage

at the same frequency.

25) The Inductor finds application in choke

making industry.

26) Choke is used for varying current.

27) The induced voltage is equal to the rate of

change of magnetic flux.

28) Solar cells convert sunlight energy directly

into electrical energy.

29) Local action is caused by impurity of zinc


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