Physics Past Questions And Answers

Note: You Can Select Post UTME Schools Name Below The Exam Year.
1031

Which of the following best describes the energy changes which take place when a steam engine drives a generator which lights a lamp?

  • A. heat ----> Light----> Sound ----> Kinetic
  • B. Kinetic ----> Light ----> Heat ----> Electricity
  • C. heat ----> Kinetic ----> Electricity ----> Heat and Light
  • D. electricity ----> Kinetic ----> Heat ----> Light
View Discussion (0)JAMB 2018
1032

The driver of a car moving with uniform speed of 40ms-1 observes a truck approaching from the opposite direction with a speed of 20ms-1. Calculate the speed of the car relative to that of the truck

  • A. .5ms-1
  • B. 2.0ms-1
  • C. 20.0ms-1
  • D. 60.0ms-1
View Discussion (0)WAEC 2000 OBJ
1033

If two charged plates are maintained at a potential difference of 3 kv, the work done in taking a charge of 600 µC across the field is?

  • A) 0.8 J
  • B) 1.8 J
  • C) 9.0 J
  • D) 18.0 J
View Discussion (0)JAMB 2007
1034

In A.C circuit theory, the root means square (r.m.s) current, Irms and the peak (maximum)current Io are related by

  • A. Io = \(\frac{I_rms}{\sqrt{2}}\)
  • B. Irms = \(\frac{I_o}{\sqrt{2}}\)
  • C. Irms = \(\frac{\frac{I}{I_o}}{\sqrt2}\)
  • D. Irms = \(\frac{I_rms}{\sqrt{2}}\)
View Discussion (0)JAMB 1992
1035

The equation of transverse wave traveling along a string is given by Y = 0.3 sin(0.5x - 50t) where Y and X are in cm and t is in seconds.Find the maximum displacement of the particles from the equilibrium position

  • A. 50.0cm
  • B. 2.5 cm
  • C. 0.5cm
  • D. 0.3cm
View Discussion (0)JAMB 1994
1036

Use the diagram to answer question;

v

Camphor is a chemical that sub-limes and interacts with water reducing the surface tension where it is put. Explain why the toy boat illustrated above would move forward with the camphor placed at the back of it but would be stationary before the placement of the camphor.

View Discussion (0)WAEC 2008 THEORY
1037

Which of the following units is the S.I. unit of heat capacity?

  • A. Jkg-1
  • B. Jkg-1 K-1
  • C. JK-1
  • D. Jg-1K-1
View Discussion (0)WAEC 2015 OBJ
1038

A particle is projected horizontally at 15ms\(^{-1}\) from a height of 20m. Calculate the horizontal distance covered by the particle just before hitting the ground. [g= 10ms\(^{-2}\)]

View Discussion (0)WAEC 2017 THEORY
1039

List three uses of rockets

View Discussion (0)WAEC 2016 THEORY
1040

Calculate the mass of ice that would melt when 2kg of copper is quickly transferred from boiling water to a block of ice without heat loss (specific heat capacity of copper = 400Jkg\(^{1}\)k\(^{-1}\), latent heat of fusion of ice = 3.3 x 10\(^{5}\)Jkg\(^{-1}\))

  • A. \(\frac{8}{33}\)kg
  • B. \(\frac{3.3}{80}\)kg
  • C. \(\frac{80}{33}\)kg
  • D. \(\frac{3.3}{8}\)kg
View Discussion (0)JAMB 2021