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 701:

  

  A body of mass 6kg rests on an inclined plane. The normal reaction is R and the limiting frictional force is F as shown in the image above. if F = 30N, and g = 10ms² then the angle of inclination $\theta$ is

  Options:
  A) ${15}^{\circ }$
  B) ${30}^{\circ }$
  C) ${45}^{\circ }$
  D) ${60}^{\circ }$
  E) ${75}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 702: The major difference between a pure semiconductor and a pure metal is that Options:
  A) metals are harder than semiconductor
  B) while resistance of metals decrease with temperature , the reverse is the case for semiconductor
  C) the resistance of metals increases with temperature, while for semiconductors, it is the reverse
  D) metals have forbidden gaps while semiconductors have not
  Show Answer
  The correct answer is C .
• Question 703: The battery connection that permits current to flow across a p-n junction is called? Options:
  A) reverse baised
  B) forward baised
  C) amplification.
  D) rectification
  Show Answer
  The correct answer is B .
• Question 704: Which statement about the concept of temperature is NOT true? Options:
  A) Temperature decides the direction of heat flow between two bodies
  B) Temperature is a measure of coldness of a body
  C) Temperature is a vector quantity
  D) Temperature is a measure of hotness of a body.
  E) Temperature scales include Fahrenheit, Celsius and Kelvin
  Show Answer
  The correct answer is C .
• Question 705: An object of mass 2kg moves for 5s with a uniform velocity of 10ms. What is the magnitude of its acceleration in ms^-2
  ? Options:
  A) zero
  B) 2.5
  C) 10
  D) 12.5
  E) 100
  Show Answer
  The correct answer is A .
• Question 706: In homes, electrical appliances and lamps are connected in parallel because Options:
  A) Parallel connections do not heat up the wires
  B) series connections use high voltage
  C) less current will be used
  D) less voltage will be used
  Show Answer
  The correct answer is C .
• Question 707: The normal temperature of human body is record at what ranges? Options:
  A) 27°C to 43°C
  B) 30°C to 40°
  C) 98.4°C only
  D) Between 35°C to 37°C
  Show Answer
  The correct answer is D .
• Question 708:

  During the transformation of matter from the solid to the liquid state, the heat supplied does not produce temperature increase because

  Options:
  A) all the heat is used to break the bonds holding the molecules of the solid together
  B) the heat capacity has become very large as the substance melts
  C) the heat energy is quickly conducted away
  D) the heat gained is equal to the heat lost by the substance
  Show Answer
  The correct answer is A .
• Question 709:

  A metal rod has a length of 100cm at 200${}^{o}C$. At what temperature will its length be 99.4cm. If the linear expansivity of the material of the rod is 2 $\times$ 10${}^{-5}{C}^{-1}$

  Options:
  A) 200${}^o$C
  B) 300${}^o$C
  C) 100${}^o$C
  D) -100${}^o$C
  Show Answer
  The correct answer is D .
• Question 710:

  

  In the diagram above, the hanging mass m2 is adjusted until m1 is on the verge of sliding. The coefficient of static friction between the mass m1 and the table is

  Options:
  A) m1/m2
  B) m1g/m2
  C) m2/m1
  D) m2g/m1
  Show Answer
  The correct answer is C .