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 471:

  Radio waves belongs to the class of ware whose velocity is about

  Options:
  A) 340m/s
  B) 3 × 10${}^6$ m/s
  C) 3 × 10${}^8$ m/s
  D) 3 × 10${}^{-8}$ m/s
  Show Answer
  The correct answer is C .
• Question 472: A thermometer with an arbitrary scale S, of equal division registers -30^oS at the ice point and +90^oS at the steam point. Calculate the Celsius temperature corresponding to 60^oS Options:
  A) 25.0^oC
  B) 50.0^oC
  C) 66.7^oC
  D) 75.0^oC
  Show Answer
  The correct answer is D .
• Question 473:

  A mixture of blue and red pigment when illuminated by white light will appear

  Options:
  A) green
  B) orange
  C) purple
  D) magenta
  Show Answer
  The correct answer is C .
• Question 474: 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 475: A car of mass 1500 kg goes round a circular curve of radius 50m at a speed of 40 ms^-1. The magnitude of the centripetal force on the car is ? Options:
  A) 4.8 x 10⁴ N
  B) 4.8 x 10³ N
  C) 1.2 x 10³ N
  D) 1.2 x 10² N
  Show Answer
  The correct answer is A .
• Question 476: An object placed on the principle axis of a convex lens of focal length 10m produces a real image of double magnification. The image distance from the lens is Options:
  A) 30cm
  B) 25cm
  C) 20cm
  D) 15cm
  E) 10cm
  Show Answer
  The correct answer is A .
• Question 477:

  One of the following is a scalar quantity?

  Options:
  A) weight
  B) momentum
  C) potential energy
  D) displacement
  Show Answer
  The correct answer is C .
• Question 478:

  

  In the diagram shown, If the south-poles of two magnets stroke a steel bar, the polarities at T and V will respectively be

  Options:
  A) north and south
  B) south and south
  C) north and north
  D) south and north
  Show Answer
  The correct answer is C .
• Question 479: The equation P^aV^bT^c= constant reduces to Charles Law if Options:
  A) a=1, b=1and c=0
  B) a=1, b=0 and c=-1
  C) a=0, b=1 and c=1
  D) a=0, b=1 and c=-1
  Show Answer
  The correct answer is D .
• Question 480: The magnification of the image of an object placed in front of a convex mirror is $\frac{1}{3}$. If the radius of curvature of the mirror is 24cm, what is the distance between its object and its image? Options:
  A) 8cm
  B) 16cm
  C) 24cm
  D) 32cm
  Show Answer
  The correct answer is D .