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Physics 2009 JAMB Past Questions

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26
Which of the following is a secondary colour
  • A. blue
  • B. orange
  • C. red
  • D. green
View Answer & Discuss (4) JAMB 2009
27

If negative charges are induced on an electroscope and a positively charged rod is brought near the cap of the electroscope, the leaves will?

  • A. close up
  • B. become positively charged
  • C. become negatively charged
  • D. open further
View Answer & Discuss (10) JAMB 2009
28
An electric lamp marked 240v, 60 W is left to operate for an hour. How much energy is generated by the filament?
  • A. 3.86 x 105J
  • B. 3.56 x 105J
  • C. 1.80 x 104J
  • D. 2.16 x 105J
View Answer & Discuss JAMB 2009
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29
A band of 500 rectangular loops of wire of area 20 cm by 20 cm, encloses a region of magnetic field which charges from 1.0T to 0.4T within 5 seconds, calculate the induced e.m.f.
  • A. 5.60 v
  • B. 24.00 v
  • C. 0.24 v
  • D. 2.40 v
View Answer & Discuss JAMB 2009
30

Cancerous cells can be destroyed by?

  • A. ultraviolet rays
  • B. alpha particules
  • C. x - rays
  • D. infrared rays
View Answer & Discuss (10) JAMB 2009
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