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Physics 1997 WAEC Past Questions

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11

When white light is incident on a glass prism the spectrum produced on a screen placed beyond the prism is due to?

  • A. Diffraction
  • B. Reflection
  • C. Refraction
  • D. Polarisation
  • E. Interference
View Answer & Discuss (1) WAEC 1997
12

At what distance from a simple microscope must an object be placed so that the image 5 times the size of the object is produced 20cm from the lens?

  • A. 2cm
  • B. 3.3cm
  • C. 4cm
  • D. 5cm
  • E. 15cm
View Answer & Discuss (3) WAEC 1997
13
Whenever light waves are restricted to a specific plane they are said to be
  • A. Diffracted
  • B. Refracted
  • C. Diffused
  • D. Regularly reflected
  • E. Plane polarized
View Answer & Discuss (2) WAEC 1997
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14
A solid material of volume 100\(cm^{-3}\) is heated through a temperature difference of 40°C. Calculate the increase in the volume of the material if its linear expansitivity is 2 x \(10^{-6}K{-1}\)
  • A. 2.4 x\(10^{-2}cm^{-3}\)
  • B. 1.6 x\(10^{-2}cm^{-3}\)
  • C. 8 x\(10^{-2}cm^{-3}\)
  • D. 5 x\(10^{-2}cm^{-3}\)
  • E. 4 x\(10^{-2}cm^{-3}\)
View Answer & Discuss (2) WAEC 1997
15
Calculate the quantity of heat released when 100g of steam at 100°C condenses to water(Take the specific latent heat of vaporization of water as 2.3x \(10^6Jkg^{-1}\))
  • A. 2.3x\(10^{1}J\)
  • B. 2.3x\(10^{2}J\)
  • C. 2.3x\(10^{4}J\)
  • D. 2.3x\(10^{5}J\)
  • E. 3.3x\(10^{7}J\)
View Answer & Discuss WAEC 1997
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