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 171:

  The working of the beam balance is based on the principle of

  Options:
  A) moments
  B) conservation of energy
  C) equivalence
  D) floatation
  Show Answer
  The correct answer is A .
• Question 172: In a meter bridge experiment, two resistor 2$\mathrm{\Omega }$ and 3$\mathrm{\Omega }$ occupy the left and right gaps respectively. Find the balance point from the left side of the bridge Options:
  A) 20cm
  B) 40cm
  C) 60cm
  D) 80cm
  Show Answer
  The correct answer is B .
• Question 173:

  Which of the following can be described as high tension transmission?

  Options:
  A) High resistance and low voltage
  B) Low current and high voltage
  C) High current and low voltage
  D) High current and low resistance
  Show Answer
  The correct answer is B .
• Question 174:

  

  A body is acted upon by forces applied at points P and Q as shown above their resultant is equal to

  Options:
  A) 2√5N in adirection N 56° E
  B) 2√5N in adirection N 56° W
  C) 2√13N in adirection N 56◦ E
  D) 2√13N in adirection N 56° W
  E) √10N in adirection N 56° E
  Show Answer
  The correct answer is C .
• Question 175:

  A bar magnet is divided into two pieces, which of the following statement is correct?

  Options:
  A) two new magnets are created
  B) the magnetic field of each separate piece becomes stronger
  C) the electric field is created
  D) the bar magnet is demagnetized
  Show Answer
  The correct answer is A .
• Question 176:

  A ball of mass 0.5kg moving at 10ms${}^{-1}$ collides with another ball of equal mass at rest. If the two balls move off together after the impact, calculate their common velocity.

  Options:
  A) 0.2ms${}^{-1}$
  B) 0.5ms${}^{-1}$
  C) 5.0ms${}^{-1}$
  D) 5.5ms${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 177:

  The lower and upper fixed points marked on a Mercury-in-glass thermometer are 210mm apart. The end of the mercury column in the tube is 49mmabove the lower fixed point in a room. What is the temperature of the room in degrees Celsius?

  Options:
  A) 55.3${}^o$C
  B) 23.3${}^o$C
  C) 49.0${}^o$C
  D) 16.43${}^o$C
  Show Answer
  The correct answer is B .
• Question 178: A stone and a feather are dropped from the same height above the earth surface. ignoring air resistance, which of the following is correct? Options:
  A) the feather will be brown away by the wind while stone will drop steadily
  B) the stone and the feather will both reach the ground a the same time
  C) the feather will reach the ground first
  D) the stone will reach the ground first
  Show Answer
  The correct answer is B .
• Question 179: The length of a side of a metallic cube at 20^oC is 5.0cm. Given that the linear expansivity of the metal is 4.0 x 10^-5k^-1, find the volume of the cube at 120^oC . Options:
  A) 126.50cm³
  B) 126.25cm³
  C) 126.00cm³
  D) 125.00cm³
  Show Answer
  The correct answer is A .
• Question 180:

  When the temperature of a liquid is increased, its surface tension

  Options:
  A) increases
  B) decreases
  C) remain constant
  D) increases then decreases
  Show Answer
  The correct answer is B .