Physics Exam Past Questions and Answers | JAMB, WAEC and NECO

Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.

• Question 1241:
  

  Consider the three forces acting at O and in equilibrium as shown in the figure. Which of the following equations is/are CORRECT?

  I.P${}_1$ cos${\theta }_1$ = p${}_1$ cos ${\theta }_2$

  II. P${}_3$ = P${}_1$ cos ${\theta }_4$ + P${}_{2}co{s}_2$

  III. P${}_1\sin {\theta }_1=P_2\sin {\theta }_2$

  Options:
  A) I only
  B) II only
  C) III only
  D) I, II and III only
  Show Answer
  The correct answer is C .
• Question 1242: A simple cell with mercury-amalgamated zinc electrode prevents Options:
  A) local actions
  B) polarization
  C) buckling
  D) degradation
  Show Answer
  The correct answer is A .
• Question 1243: A motorcycle of mass 100kg moves round in a circle of radius 10m with a velocity of 5 ms^-1. find the coefficient of friction between the road and the tyres. Options:
  A) 25.00
  B) 2.50
  C) 0.50
  D) 0.25
  Show Answer
  The correct answer is D .
• Question 1244: A hydrometer is an instrument used in measuring Options:
  A) vapour pressure of a fluid
  B) density of liquid
  C) relative humidity of a liquid
  D) relative density of a liquid
  Show Answer
  The correct answer is D .
• Question 1245: In fleming's right-hand rule, the thumb, the forefinger and the middle finger if held mutually at right angles represent respectively, the Options:
  A) motion, the field and the induced current
  B) induced current, the motion and the field
  C) field, the induced current and the motion
  D) induced current, the field and the motion
  Show Answer
  The correct answer is A .
• Question 1246: If the relative density of gold is 19.2, the volume of 2.4kg of gold is? Options:
  A) 8.00 x 10^-3 m³
  B) 1.25 x 10^-4 m³
  C) 1.92 x 10^-4 m³
  D) 4.61 x 10^-3 m³
  Show Answer
  The correct answer is B .
• Question 1247:

  

  A uniform light beam XZ is Hinged at X and kept in equilibrium by the forces T and F as shown in the diagram above. if XO = 20m and OY = 30cm, express T in terms of F

  Options:
  A) T =2√3/3
  B) T= 2F
  C) T = 5V3F/3
  D) T = 5F
  Show Answer
  The correct answer is D .
• Question 1248: Two lamps are rated 40W and 220V each are connected in series. The total power dissipated in both lamps is Options:
  A) 10W
  B) 20W
  C) 40W
  D) 80W
  E) None of the above
  Show Answer
  The correct answer is D .
• Question 1249: An object 4 cm high is placed 15 cm from a concave mirror of focal length 5 cm. The size of the image is Options:
  A) 2 cm
  B) 3 cm
  C) 4 cm
  D) 5 cm
  Show Answer
  The correct answer is A .
• Question 1250: A 100kg box is pushed along a road with force of 500N. If the box moves with a uniform velocity, the coefficient of friction between the box and the road is Options:
  A) 0.4
  B) 1.0
  C) 0.8
  D) 0.5
  Show Answer
  The correct answer is D .