Physics Past Questions And Answers

Note: You Can Select Post UTME Schools Name Below The Exam Year.
731

The power dissipated in an a.c. circuit with an r.m.s, current of 5A, r.m.s voltage of 10V and a phase angle of 60o is

  • A. 25W
  • B. 50W
  • C. 120W
  • D. 125W
View Discussion (0)JAMB 1997
732

A rocket is fired from the earth's surface to a distant planet. By Newton's law of universal gravitation, the force F will

  • A. increase as r reduces
  • B. increase as G varies
  • C. remains constant
  • D. increases as r increases
View Discussion (0)JAMB 2012
733

What type of wave is emitted by a loud speaker?

  • A. Transverse
  • B. Longitudinal
  • C. Gamma
  • D. Radio
View Discussion (0)WAEC 2015 OBJ
734

ToC051015204060S.V.P(mmHg)4.586.518.9412.6717.5055.10149.00 The table above shows the saturation vapour pressure against temperature in a certain town. If the vapour pressure in this town at 20oC is 10mmHg, what is the relative humidity?

  • A. 170.0%
  • B. 57.0%
  • C. 17.5%
  • D. 10.0%
View Discussion (0)JAMB 2003
735

A bullet fired vertically upwards reaches a height of 500m. Neglecting air resistance, calculate the magnitude of the initial velocity of the bullet. [g = 10ms-2]

  • A. 500.0ms-1
  • B. 100.0ms-1
  • C. 70.0ms-1
  • D. 50.0ms-1
View Discussion (0)WAEC 2015 OBJ
736

A sound note of frequency 250 Hz and wavelength 1.3m is produced at a point near a hill. If the echo of the sound is received 1 second later at the point, how far away is the hill from the point?

  • A. 131.3m
  • B. 162.5m
  • C. 248.7m
  • D. 251.3m
View Discussion (0)WAEC 1995 OBJ
737

A wheel and axle of radii 800mm and 200mm respectively is used to raise a body of weight 800N by the application of 250N. Calculate the efficiency of the machine

  • A. 85%
  • B. 80%
  • C. 60%
  • D. 20%
View Discussion (0)WAEC 2005 OBJ
738

An object placed 10cm from a concave mirror of focal length 5cm would have its

  • A) at the centre of convature
  • B) at the radius of curvature
  • C) at infinity
  • D) 10 cm from the focus
View Discussion (0)JAMB 2006
739

The size of the hole of a pin hole camera is increased. The resultant image formed becomes

  • A. sharper
  • B. reduced in size
  • C. enlarged
  • D. blurred
View Discussion (0)WAEC 2002 OBJ
740

The air column in a resonance tube is set into resonance by a vibrating tuning fork. The resultant waves in the air column will be

  • A. mechanical and transverse
  • B. progressive and longitudinal
  • C. stationary and transverse
  • D. stationary and longitudinal.
View Discussion (0)WAEC 1999 OBJ