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 61: A cell of internal resistance r is connected to an external resistor R. The conductor for maximum power transfer is? Options:
  A) R < r
  B) R = r
  C) R = 2r
  D) R > r
  Show Answer
  The correct answer is B .
• Question 62: Which of the following phenomena explains the formation of a mirage? i. Reflection ii. Refraction iii. Diffraction Options:
  A) i and ii only
  B) ii and iii only
  C) i and iii only
  D) i, ii, and iii only
  Show Answer
  The correct answer is A .
• Question 63:

  

  The diagram above shows a meter bridge in which two of thee arms contain resistances R and 2Ω. A balance point is obtained at 60cm from the left end , calculate the value of R

  Options:
  A) 1.2Ω
  B) 1.3Ω
  C) 3.0Ω
  D) 6.0Ω
  Show Answer
  The correct answer is C .
• Question 64:

  

  The figure above shows two similar bulbs X and Y connected to suitable power supply with F as an appropriate fuse rating, if the filament of X breaks then the

  Options:
  A) Brightness Of Y will reduce
  B) Brightness Of Y will remain constant
  C) Brightness Of Y will increase
  D) fuse F will blow
  Show Answer
  The correct answer is C .
• Question 65: What is the cost of running seven 40 W lamps and five 80 W la mps for 12 hours of the electrical energy cost N7.00kWk? Options:
  A) N80.00
  B) N45.36
  C) N65.00
  D) N57.12
  Show Answer
  The correct answer is D .
• Question 66: Which of the following pairs is NOT part of the electromagnetic spectrum? i. Radio waves. ii. Beta rays. iii. Gamma rays. iv. Alpha rays Options:
  A) i and ii
  B) iii and iv
  C) i and ii
  D) ii and iv
  Show Answer
  The correct answer is D .
• Question 67:

  I. The number of neutrons released exceeds the number that caused the fission.

  II. There is loss of mass.

  III. Energy is produced.

  IV. Smaller nuclei merge to form larger nuclei

  Which of the statement above are correct about nuclear fission?

  Options:
  A) II,III and IV only
  B) I, II and IV only
  C) I,II and III only
  D) I, III and IV only
  Show Answer
  The correct answer is C .
• Question 68:

  A travelling wave of amplitude 0.80 m has a frequency of 16 Hz and a wave speed of 20 $ms-1$

  Calculate the wave number of the wave.

  Options:
  A) 3
  B) 4
  C) 5
  D) 2
  Show Answer
  The correct answer is C .
• Question 69: A wave of frequency 10Hz forms a stationary wave pattern in a medium where the velocity is 20cms^-1. The distance between adjacent nodes is Options:
  A) 1.0cm
  B) 1.5cm
  C) 2.0cm
  D) 5.0cm
  Show Answer
  The correct answer is C .
• Question 70:

  

  The figure above shows three different ways of hanging a heavy picture from a hook. the tension in the string will be

  Options:
  A) Greatest in X
  B) Greatest in Y
  C) Greatest in Z
  D) Same in each one
  Show Answer
  The correct answer is C .