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 811: An object is placed directly below a glass block of thickness 3.0cm. Calculate the lateral displacement of the object if the refractive index of the glass is 1.5. Options:
  A) 1.0cm
  B) 1.5cm
  C) 2.0cm
  D) 2.5cm
  Show Answer
  The correct answer is A .
• Question 812: Light of velocity 3 x 10⁸ms^-1 is incident on a material of reflective of index n. If the velocity of light is reduced to 2.4 x 10⁸ms^-1 in the material, what is n? Options:
  A) 2.33
  B) 2.25
  C) 1.33
  D) 1.25
  Show Answer
  The correct answer is D .
• Question 813: A man whose mass is 80kg climbs a staircase in 20s and expends power of 120W. Find the height of the staircase.[g = 10ms^-2] Options:
  A) 1.8m
  B) 2.0m
  C) 2.5m
  D) 3.0m
  Show Answer
  The correct answer is D .
• Question 814:

  In what range oftemperature is the expansion of water anomalous?

  Options:
  A) +208${}^o$C to +212${}^o$C
  B) -80${}^o$C + -76${}^o$C
  C) 0${}^o$C to +4${}^o$C
  D) -4${}^o$C to +0${}^o$C
  Show Answer
  The correct answer is C .
• Question 815: The colours seen in the thin films of oil on the road and in soap bubbles are due to Options:
  A) reflection
  B) interference
  C) diffraction
  D) polarization
  Show Answer
  The correct answer is A .
• Question 816: In an experiment to determine terminal velocity, as the pressure increases, the viscosity off a liquid Options:
  A) increases
  B) decreases
  C) increases then decreases
  D) remains constant
  Show Answer
  The correct answer is D .
• Question 817:

  The gravitational pull on the moon is $\frac{1}{6}$ that of the earth. If a body weighs 6.0 N on the moon,what will be the weight on the earth?

  Options:
  A) 6.0 N
  B) 5.0 N
  C) 12.0 N
  D) 36.0 N
  Show Answer
  The correct answer is D .
• Question 818: What is the relative permitivity of a capacitor if its capacitance with a medium as dielectric is 16 farads and its capacitance with vacuum as dielectric is 2 farads? Options:
  A) o
  B) $\frac{1}{2}$
  C) 2
  D) 8
  E) 32
  Show Answer
  The correct answer is D .
• Question 819: When an object is placed very close to the pole of a concave mirror, the virtual image obtained is Options:
  A) diminished and upright
  B) diminished and inverted
  C) enlarged and inverted
  D) enlarged and upright
  Show Answer
  The correct answer is D .
• Question 820: The driver in a motor car, of which the total mass is 800kg and which is traveling at 20ms^-1, suddenly observes a stationary dog in his path 50m ahead. If the car brakes can exert a force of 2000N, what will most likely happen? Options:
  A) the car will be able to stop immediately the driver notices the dog
  B) the car will stop 3pm after hitting the dog
  C) the car will stop 20m in front of the dog
  D) the driver will quickly reverse the car
  E) the car will stop 5m beyound the dog
  Show Answer
  The correct answer is C .