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 591:

  A parallel plate capacitor separated by an air gap is made of $0.8m^2$tin plates and 20 mm apart. It is connected to 120 V battery. What is the charge on each plate?

  Take ${\epsilon }_o$ = $8.85\times {10}^{-}12F{m}^{-}1$

  Options:
  A) 3.54nC
  B) 42.5nC
  C) 35.4nC
  D) 4.25nC
  Show Answer
  The correct answer is B .
• Question 592: Which of the following media allow the transmission of sound wave through them i. Air. ii. Liquids. iii. Solids. Options:
  A) i and ii only
  B) i and iii only
  C) ii and iii only
  D) i,ii and iii
  Show Answer
  The correct answer is D .
• Question 593: The dimension of universal gravitational constant is……….? Options:
  A) ­$M{­}^{–1}{L}^3{T}^{–2}$
  B) ML³T²
  C) ML³
  D) MLT^-2
  Show Answer
  The correct answer is A .
• Question 594: If the magnification of a virtual image formed of an object 10cm from a convex lens is 3, then the focal length of the lens is Options:
  A) 10cm
  B) 15cm
  C) 16cm
  D) 19cm
  E) 20cm
  Show Answer
  The correct answer is B .
• Question 595:

  

  PQ is a thin rod on a horizontal table, RS is a plane mirror inclined at ${45}^{\circ }C$ to the horizontal as shown above. The image of PQ as seen in the mirror by the eye T is

  Options:
  A) horizontal
  B) parallel to the mirror
  C) at infinity
  D) vertical
  E) highly magnified
  Show Answer
  The correct answer is B .
• Question 596: Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then Options:
  A) A and B are equal
  B) A is greater than B
  C) the angle between A and B is 0°
  D) the angle between A and B is 90°
  E) the angle between A and B is 180°
  Show Answer
  The correct answer is E .
• Question 597: One of the properties of the earth's magnetic field is that the Options:
  A) north pole lies in the northern hemisphere
  B) geographic and magnetic meridians coincide
  C) earth's magnetic flux is entirely horizontal at a place where the magnetic dip is zero
  D) earth's magnetic flux is entirely vertical at a place where the magnetic dip is zero
  Show Answer
  The correct answer is C .
• Question 598: N.N.P.C. gas cylinder containing 15kg of cooking gas was left open, and the gas emptied in 3.8 minutes, at an average speed of 20 ms^-1. What force was exerted on the gas in the cylinder? Options:
  A) 132N
  B) 13.2N
  C) 1.32N
  D) 0.132N
  E) 0.013N
  Show Answer
  The correct answer is C .
• Question 599:

  According to kinetic molecular model in gases,

  Options:
  A) the particles are closely packed together; they occupy minimum space are usually arranged in a regular pattern
  B) the particles vibrate about fixed positions and are held together by the strong intermolecular bonds between them
  C) the molecules are very far apart and occupy all the spaces made available to them
  D) the particles occur in clusters with molecules slightly further apart
  Show Answer
  The correct answer is C .
• Question 600:

  

  In the Fig above, MN is a light uniform meter rule pivoted at O, the 80cm mark. A load of mass 3.0 kg is suspended on the meter rule at L, the 10cm mark. If the rule is kept in equilibrium by a string RP, fixed at P and attached to the rule at R, the 20cm mark, then the Tension T on the string is

  Options:
  A) 30N
  B) 34N
  C) 35N
  D) 60N
  E) 70N
  Show Answer
  The correct answer is E .