WAEC Physics questions: Light: reflection

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

1. Question 1· Light: reflection· WAEC

   According to the laws of reflection, the angle of incidence is equal to the

   • Aangle of refraction
   • Bangle of reflection
   • Ccritical angle
   • Dangle of deviation

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2. Question 2· Light: reflection· WAEC

   Dentists use concave mirrors because, with the tooth inside the focal length, they give an image that is

   • Athe same size and inverted
   • Binverted and diminished
   • Creal and diminished
   • Dupright and magnified

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   Explanation and discussion

3. Question 3· Light: reflection· WAEC

   Light strikes a plane mirror with an angle of incidence of 30°. The angle of reflection is

   • A60°
   • B90°
   • C30°
   • D15°

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   Explanation and discussion

4. Question 4· Light: reflection· WAEC

   A convex mirror has a radius of curvature of 40 cm. Find its focal length.

   • A80 cm
   • B40 cm
   • C20 cm
   • D10 cm

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5. Question 5· Light: reflection· WAEC

   A concave mirror has a radius of curvature of 30 cm. Its focal length is

   • A60 cm
   • B30 cm
   • C15 cm
   • D7.5 cm

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6. Question 6· Light: reflection· WAEC

   A man stands 3 m in front of a plane mirror. How far is he from his image?

   • A3 m
   • B1.5 m
   • C6 m
   • D9 m

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7. Question 7· Light: reflection· WAEC

   An object is 30 cm from a concave mirror of focal length 10 cm. Find the image distance.

   • A7.5 cm
   • B15 cm
   • C20 cm
   • D30 cm

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8. Question 8· Light: reflection· WAEC

   A ray strikes a plane mirror at an angle of incidence of 35°. What is the angle between the incident and reflected rays?

   • A110°
   • B35°
   • C55°
   • D70°

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9. Question 9· Light: reflection· WAEC

   Two plane mirrors are inclined at 60° to each other. How many images of an object placed between them are formed?

   • A3
   • B6
   • C5
   • D7

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10. Question 10· Light: reflection· WAEC

    An object stands 3 m in front of a plane mirror. How far is the object from its image?

    • A1.5 m
    • B3 m
    • C6 m
    • D9 m

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    Explanation and discussion

11. Question 11· Light: reflection· WAEC

    An object is 20 cm in front of a plane mirror. The distance between the object and its image is

    • A0 cm
    • B20 cm
    • C10 cm
    • D40 cm

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    Explanation and discussion