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NECO offline past questions - All questions, answers & explanations in one app 25712
Project Topics and Materials, Post-UTME past questions - Download now or upload yours to get paid
76
If a spherical metal bob of radius 3cm is fully immersed in a cylinder containing water and the water level rises by 1cm, what is the radius of the cylinder?
  • A. 12cm
  • B. 1cm
  • C. 3cm
  • D. 6cm
View Answer & Discuss (16) JAMB 2001
77
The resultant of two forces acting on an object is maximum if the angle between them is
  • A. 45°
  • B. 0°
  • C. 90°
  • D. 180°
View Answer & Discuss (8) JAMB 2001
78

I. The earth is not spherical but elliptical in shape
II. Variation in latitude and longitude
III. Rotation of the earth on its axis
IV. Variation in the density of the earth

On which combination of the above does the weight of an object vary on the earth's surface?

  • A. I, II, III and IV
  • B. III and IV only
  • C. I, II and III only
  • D. I and II only
View Answer & Discuss (21) JAMB 2001
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79
The efficiency of a machine is always less than 100% because the
  • A. work output is always greater than the work input
  • B. load lifted is always greater than the effort applied
  • C. effort applied is always greater than the load lifted
  • D. velocity ratio is always greater than the mechanical advantage
View Answer & Discuss (8) JAMB 2001
80
Which of the following consists entirely of vector quantities?
  • A. Velocity, magnetic fulx and reaction
  • B. Tension, magnetic flux and mass
  • C. Displacement, impulse and power
  • D. Work, pressure and moment
View Answer & Discuss (8) JAMB 2001
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