Jamb 2018 Physics Past Questions And Answers

Note: You Can Select Post UTME Schools Name Below The Exam Year.
1

A positively charged rod X is brought near an uncharged metal sphere Y and is then touched by a finger with X still in place. When the finger is removed, the result is that Y has

  • A. no charge and a zero potential
  • B. a positive charge and a zero potential
  • C. a negative charge and a positive potential
  • D. a negative charge and a negative potential
View or Post an Explanation 6409 (0)JAMB 2018
2

What effort will a machine of efficiency 90% apply to a load of 180N if its efforts arm is twice as long as its load arm?

  • A. 100N
  • B. 90N
  • C. 80N
  • D. 120N
View or Post an Explanation 6418 (0)JAMB 2018
3

Electrical appliances in homes are normally earthed so that

  • A. a person touching the appliances is safe from electric shock
  • B. both the a.c. and d.c. sources can be used
  • C. the appliances are maintained at a higher pd than the earth
  • D. the appliances are maintained at a lower pd than the earth
View or Post an Explanation 6410 (0)JAMB 2018
4

In the diagram shown, If the south-poles of two magnets stroke a steel bar, the polarities at T and V will respectively be

In the diagram shown, If the south-poles of two magnets stroke a steel bar, the
  • A. north and south
  • B. south and south
  • C. north and north
  • D. south and north
View or Post an Explanation 6415 (0)JAMB 2018
5

What is the resultant resistance of the circuit in the image shown?

What is the resultant resistance of the circuit in the image shown?
  • A. 8Ω
  • B. 11Ω
  • C. 4Ω
  • D. 3.6Ω
View or Post an Explanation 6369 (0)JAMB 2018
6

The process whereby a liquid turns spontaneously into vapour is called

  • A. regelation
  • B. evaporation
  • C. boiling
  • D. sublimation
View or Post an Explanation 6411 (0)JAMB 2018
7

The density of 400cm3 of palm oil was 0.9gcm-3 before frying. If the density of the oil was 0.6gcm-3 after frying, assuming no loss of oil due to spilling, its new volume was?

  • A. 1360cm3
  • B. 600cm3
  • C. 240cm3
  • D. 8000m3
View or Post an Explanation 6362 (0)JAMB 2018
8

Convex mirrors are used as driving mirrors because images formed are

  • A. erect, Virtual and diminished
  • B. erect, real and diminished
  • C. erect, virtual and magnified
  • D. inverted, virtual and diminished
View or Post an Explanation 6413 (0)JAMB 2018
9

A lead bullet of mass 0.05 kg is fired with a velocity of 200 m/s into a lead block of mass 0.95 kg. Given that the lead block can move freely, the final kinetic energy after impact is

  • A. 100J
  • B. 150J
  • C. 50J
  • D. 200J
View or Post an Explanation 6403 (0)JAMB 2018
10

Calculate the effective capacitance of the circuit in the diagram given

Calculate the effective capacitance of the circuit in the diagram given
  • A. 4μf
  • B. 3μf
  • C. 2μf
  • D. 1μf
View or Post an Explanation 6419 (0)JAMB 2018