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 41:

  Lamps in domestic lightings are usually in

  Options:
  A) series
  B) divergent
  C) convergent
  D) parallel
  Show Answer
  The correct answer is D .
• Question 42: A current of 0.5 A flowing 3h Deposits 2g of metal during electrolysis. The quantity of the same metal that would be deposited by the currents of 1.5A flowing in 1h is Options:
  A) 2g
  B) 6g
  C) 10g
  D) 18g
  Show Answer
  The correct answer is A .
• Question 43:

  

  In the figure above, M and N are insulated metal spheres in contact. A negatively charged ebonite rod P is I brought near M. When M and N are Separated and the rod is taken away, which of the following statements is correct

  Options:
  A) both M and N have acquired negative charges
  B) both M and N have acquired positive charges
  C) M has acquired negative charge and N positive charge
  D) N has acquired negative charge and M positive charge
  Show Answer
  The correct answer is D .
• Question 44: The component of vector X along the direction of vector Y is zero when Options:
  A) X and Y are in opposite directions to each other
  B) X is at an angle of 45° to Y
  C) X is perpendicular to Y
  D) X and Y are parallel to each other
  Show Answer
  The correct answer is D .
• Question 45: An electron makes a transition from a certain energy level E_k to the ground state E₀. If the frequency of emission is 8.0 x 10¹⁴Hz The energy emitted is Options:
  A) 8.25 x 10^-19J
  B) 5.28 x 10^-19J
  C) 5.28 x 10¹⁹J
  D) 8.25 x 10¹⁹J
  Show Answer
  The correct answer is B .
• Question 46: A wire of length 15m made of a material of resistivity 1.8 x 10^-6$\mathrm{\Omega }$m has a resistance of 0.27$\mathrm{\Omega }$. Determine the area of the wire Options:
  A) 1.5 x 10^-4m²
  B) 1.0 x 10^-4m²
  C) 2.7 x 10^-5m²
  D) 7.3 x 10^-6m²
  Show Answer
  The correct answer is B .
• Question 47:

  Natural radioactivity consists of emission?

  Options:
  A) $\alpha$-particles and $\beta$-rays
  B) $\alpha$-particles and X-rays
  C) $\gamma$-ray and X-rays
  D) $\alpha$-particles and $\beta$-rays and $\gamma$-rays
  Show Answer
  The correct answer is D .
• Question 48: A p-n junction diode is used as? Options:
  A) a rectifier in a d.c circuit
  B) an amplifier in d.c circuit
  C) an anplifier in an a.c circuit
  D) a rectifier in an a.c circuit
  Show Answer
  The correct answer is D .
• Question 49: Calculate the angle of minimum deviation of a 60^o prism of a refractive index [sin^-10.75 = 49^o] Options:
  A) 38.00^o
  B) 19.47^o
  C) 16.25^o
  D) 49^o
  Show Answer
  The correct answer is A .
• Question 50:

  Which of the following is not correct about the molecules of a substance in a gaseous state. They?

  Options:
  A) are in a constant state of motion
  B) have different speeds
  C) have a temperature which is measured by the average kinetic energy
  D) The collision between the gases is perfectly inelastic
  Show Answer
  The correct answer is D .