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 261: The image obtained on the screen of a pin-hole camera becomes less sharply defined when the Options:
  A) object is moved farther from the pin-hole
  B) screen is moved farther from the pin-hole
  C) object is made smaller
  D) illumination is made more intense
  E) pin-hole is made larger.
  Show Answer
  The correct answer is E .
• Question 262: A thin film of liquid is trapped between two glass plates. The force required to pull the plates apart will increase if the Options:
  A) surface tension of the liquid is reduced
  B) perpendicular distance between the plates is increased
  C) area of the liquid surface in contact with the plates is increased
  D) pressure of the air is decreased
  Show Answer
  The correct answer is C .
• Question 263:

  When the breaks in a car are applied, the frictional force on the tyresis?

  Options:
  A) a disadvantage because it is in the direction of the motion of the car
  B) a disadvantage because it is in the opposite direction of the motion of the car
  C) an advantage because it is in the direction of the motion of the car
  D) an advantage because it is in the opposite direction of the motion of the car
  Show Answer
  The correct answer is D .
• Question 264: Heat is supplied uniformly at the rate of 100W to 1.0 x 10^-2kg of a liquid for 20 seconds. If the temperature of the liquid rises by 5^oC, then the specific heat capacity of the liquid is Options:
  A) 2.0 x 10²Jkg^-1k^-1
  B) 2.0 x 10²Jkg^-1
  C) 4.0 x 10⁴Jkg^-1k^-1
  D) 4.0 x 10⁴kg^-1
  E) 8.4 x 10³Jkg^-1k^-1
  Show Answer
  The correct answer is C .
• Question 265: The bond between silicon and germanium is Options:
  A) covalent
  B) ionic
  C) dative
  D) electrovalent
  Show Answer
  The correct answer is A .
• Question 266: Which one of the following is a vector quantity? Options:
  A) Temperature gradient
  B) Mass
  C) Work
  D) Time
  Show Answer
  The correct answer is A .
• Question 267: In which of the following are the substances arranged in descending order of their thermal conductivities? Options:
  A) aluminium, copper, iron
  B) aluminium, iron, copper
  C) copper, aluminium, iron
  D) copper, iron. aluminium
  E) iron, copper, aluminium
  Show Answer
  The correct answer is D .
• Question 268: To produce a parallel beam of light from a concave mirror, the distance at a which the lamp should be placed from the mirror is equal to Options:
  A) the focal length
  B) two times the focal length
  C) the distance of the image
  D) two times the radius of curvature
  Show Answer
  The correct answer is A .
• Question 269: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 270: A force F required to keep a 5 kg mass moving round a cycle of radius 3.5 m at a speed of 7 ms^-1. What is the speed, if the force is tripled? Options:
  A) 4.0 ms^-1
  B) 6.6 ms^-1
  C) 12.1 ms^-1
  D) 21.0 ms^-1
  Show Answer
  The correct answer is C .