JAMB and WAEC Physics questions

829 questions with answers and explanations. Tap an option to check yourself.

1. Question 101· Current electricity· WAEC

   The resistance of a wire is doubled when its

   • Atemperature falls
   • Barea is doubled
   • Clength is doubled
   • Ddiameter doubles

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   Explanation and discussion

2. Question 102· Dispersion of light and colours· JAMB

   Yellow light can be produced by mixing

   • Ared and blue light
   • Bred and green light
   • Cblue and green light
   • Dred and violet light

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   Explanation and discussion

3. Question 103· Dispersion of light and colours· JAMB

   A rainbow is formed by

   • Adiffraction by dust particles
   • Breflection of light from clouds
   • Crefraction, dispersion and internal reflection of sunlight in raindrops
   • Dabsorption of light by water vapour

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   Explanation and discussion

4. Question 104· Dispersion of light and colours· WAEC

   A red object viewed in pure blue light appears

   • Ared
   • Bblack
   • Cblue
   • Dwhite

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   Explanation and discussion

5. Question 105· Dispersion of light and colours· WAEC

   When white light passes through a prism, the colour deviated most is

   • Ayellow
   • Bred
   • Cgreen
   • Dviolet

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   Explanation and discussion

6. Question 106· Dispersion of light and colours· WAEC

   White light is split into colours by a prism because

   • Alight is reflected
   • Bthe prism adds colour
   • Ceach colour is refracted by a different amount
   • Dthe colours are absorbed

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   Explanation and discussion

7. Question 107· Dispersion of light and colours· WAEC

   A green leaf appears green in white light because it

   • Aemits green light
   • Babsorbs green light
   • Creflects green light and absorbs the others
   • Drefracts green light

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   Explanation and discussion

8. Question 108· Dispersion of light and colours· JAMB

   The primary colours of light are

   • Ared, yellow and blue
   • Bred, green and blue
   • Cred, orange and violet
   • Dyellow, cyan and magenta

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   Explanation and discussion

9. Question 109· Dispersion of light and colours· WAEC

   The splitting of white light into its component colours is called

   • Areflection
   • Bdiffraction
   • Cdispersion
   • Dinterference

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   Explanation and discussion

10. Question 110· Dispersion of light and colours· WAEC

    Blue light and yellow light mixed together give

    • Ablack
    • Bgreen light
    • Cwhite light
    • Dorange light

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    Explanation and discussion

11. Question 111· Dispersion of light and colours· WAEC

    Which colour of light is deviated most by a glass prism?

    • Ayellow
    • Bred
    • Cviolet
    • Dgreen

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    Explanation and discussion

12. Question 112· Dispersion of light and colours· JAMB

    When white light passes through a prism, which colour is deviated most?

    • Ared
    • Bviolet
    • Cgreen
    • Dyellow

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    Explanation and discussion

13. Question 113· Dispersion of light and colours· JAMB

    A white shirt viewed in red light appears

    • Ared
    • Bwhite
    • Cblack
    • Dgreen

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    Explanation and discussion

14. Question 114· Dispersion of light and colours· JAMB

    A white shirt viewed through a red filter appears

    • Ablack
    • Bwhite
    • Cred
    • Dblue

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    Explanation and discussion

15. Question 115· Dispersion of light and colours· JAMB

    Mixing blue light and yellow light produces

    • Ared light
    • Bgreen light
    • Cno light (black)
    • Dwhite light

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    Explanation and discussion

16. Question 116· Dispersion of light and colours· WAEC

    A red object viewed in blue light appears

    • Ared
    • Bblue
    • Cwhite
    • Dblack

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    Explanation and discussion

17. Question 117· Dispersion of light and colours· JAMB

    A blue book looks blue in white light because it

    • Aproduces blue light
    • Babsorbs blue light
    • Creflects blue light and absorbs the other colours
    • Dreflects all colours

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    Explanation and discussion

18. Question 118· Dispersion of light and colours· WAEC

    The band of colours obtained when white light passes through a prism is called a

    • Aimage
    • Brainbow arc
    • Cshadow
    • Dspectrum

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    Explanation and discussion

19. Question 119· Dispersion of light and colours· JAMB

    Mixing red light and green light produces

    • Ablue light
    • Bwhite light
    • Cyellow light
    • Dbrown light

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    Explanation and discussion

20. Question 120· Dispersion of light and colours· WAEC

    A red shirt is viewed in a room lit only by blue light. It appears

    • Awhite
    • Bred
    • Cblue
    • Dblack

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    Explanation and discussion