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546
Calculate the refractive index of the material of the glass block shown in the diagram if YZ = 4cm
  • A. 0.40
  • B. 0.60
  • C. 1.50
  • D. 1.67
  • E. 2.50
View Answer & Discuss (10) WAEC 1991
547
An image which can be formed on a screen is said to be
  • A. virtual
  • B. blurred
  • C. inverted
  • D. erect
  • E. real
View Answer & Discuss WAEC 1991
548

Which of the following are true of plane-polarised light? i. Plane polarisation of light is the formation of hydrogen bubbles on the particle of light. ii. Plane polarisation of light is the splitting of light into its spectral components iii. A plane polarised light vibrates in one plane. iv. Polarisation of light is characteristic of transverse vibration

  • A. i and ii only
  • B. i and iv only
  • C. ii and iii only
  • D. iii and iv only
  • E. i and iii only.
View Answer & Discuss (14) WAEC 1991
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549
At which of the following distances from the lens should a slide be placed on a slide projector if f is the focal length of the projector length?
  • A. less than f
  • B. greater than f but less than 3f
  • C. equal to f
  • D. equal to 2f
  • E. greater than 2f
View Answer & Discuss (5) WAEC 1991
550
what part of the camera corresponds to the iris of the eye?
  • A. shutter
  • B. film
  • C. lens
  • D. diaphram
  • E. focusing ring
View Answer & Discuss (3) WAEC 1991
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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