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 1211: Which of the following types of waves needs a medium for propagation? Options:
  A) sound waves
  B) light waves
  C) radio waves
  D) x - rays
  Show Answer
  The correct answer is A .
• Question 1212:

  In a radioactive series:

  ${}_{92}^{235}L{\to }_{93}^{235}M{\to }_{90}^{235}N{\to }_{90}^{235}\varphi$

  The particles emitted are respectively

  Options:
  A) $\beta \beta \alpha$
  B) $\alpha \gamma \beta$
  C) $\gamma \alpha \beta$
  D) $\alpha \alpha \beta$
  E) $\beta \alpha \beta$
  Show Answer
  The correct answer is C .
• Question 1213: A string is fastened tightly between two walls 24cm apart. The wavelength of the second overtone is Options:
  A) 24cm
  B) 16cm
  C) 12cm
  D) 8cm
  Show Answer
  The correct answer is B .
• Question 1214: A substance has a half of 3mins. after 6mins. the count rate was observed to be 400. What was its count rate at zero time? Options:
  A) 200
  B) 1200
  C) 1600
  D) 2400
  Show Answer
  The correct answer is C .
• Question 1215:

  Aluminium is sometimes used as the leaf of an electroscope because it

  Options:
  A) is a light material
  B) is a good conductor
  C) is a good insulator
  D) can be converted into thin sheets
  Show Answer
  The correct answer is D .
• Question 1216:

  The limiting frictional force between two surfaces depends on

  I. the normal reaction between the surfaces

  II. the area of surface in contact

  III. the relative velocity between the surfaces

  IV. the nature of the surfaces

  Options:
  A) I only
  B) II only
  C) III only
  D) I and IV only
  Show Answer
  The correct answer is D .
• Question 1217: Vibration in a stretched spring cannot be polarized because they are Options:
  A) stationary waves
  B) transverse waves
  C) longitudinal waves
  D) mechanical waves
  Show Answer
  The correct answer is D .
• Question 1218: The current through a resistor in an a.c circuit is given as 2 sin wt. Determine the d.c. equivalent of the current Options:
  A) A/√2
  B) 2/√A
  C) 2 A
  D) √2 A
  Show Answer
  The correct answer is B .
• Question 1219: A 50W electric heater is used to heat a metal block of mass 5kg. If in 10 minutes a temperature rise of 12^oC is achieved, the specific heat capacity of the metal is Options:
  A) 400 J kg^-1K^-1
  B) 500 J kg^-1K^-1
  C) 390 J kg^-1K^-1
  D) 130 J kg^-1K^-1
  Show Answer
  The correct answer is B .
• Question 1220: The two liquids which are often used in thermometer on experiment basic is known as Options:
  A) Mercury only
  B) Alcohol and Water
  C) Mercury and Alcohol
  D) Alcohol only
  Show Answer
  The correct answer is C .