JAMB and WAEC Physics questions: Light: reflection

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

1. Question 1· Light: reflection· JAMB

   An object is placed 15 cm from a concave mirror of focal length 10 cm. Find the image distance.

   • A30 cm
   • B6 cm
   • C25 cm
   • D5 cm

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   Explanation and discussion

2. Question 2· 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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   Explanation and discussion

3. Question 3· Light: reflection· JAMB

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

   • A35°
   • B70°
   • C55°
   • D110°

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   Explanation and discussion

4. Question 4· 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

5. Question 5· 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

6. Question 6· Light: reflection· JAMB

   The image formed by a plane mirror is:

   • Areal and inverted
   • Bvirtual and magnified
   • Creal and diminished
   • Dvirtual and laterally inverted

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   Explanation and discussion

7. Question 7· 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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   Explanation and discussion

8. Question 8· 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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   Explanation and discussion

9. Question 9· Light: reflection· JAMB

   An object is 15 cm from a convex mirror of focal length 10 cm. The image is

   • Avirtual and magnified
   • Breal and inverted
   • Creal and magnified
   • Dvirtual, erect and diminished

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   Explanation and discussion

10. Question 10· 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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    Explanation and discussion

11. Question 11· Light: reflection· JAMB

    An image is 30 cm from a mirror when the object is 10 cm away. The magnification is

    • A20
    • B1/3
    • C3
    • D40

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    Explanation and discussion

12. Question 12· Light: reflection· JAMB

    Driving mirrors are convex because they

    • Aare cheap
    • Bmagnify images
    • Cform real images
    • Dgive a wide field of view

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    Explanation and discussion

13. Question 13· Light: reflection· JAMB

    A concave mirror is used as a shaving mirror because, with the face within its focal length, it gives

    • Aa real image
    • Ban inverted, diminished image
    • Can upright, magnified image
    • Dno image

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    Explanation and discussion

14. Question 14· 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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    Explanation and discussion

15. Question 15· Light: reflection· JAMB

    An object stands 20 cm in front of a plane mirror. How far is the image from the object?

    • A20 cm
    • B40 cm
    • C10 cm
    • D60 cm

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    Explanation and discussion

16. Question 16· Light: reflection· JAMB

    The word AMBULANCE is printed in reverse on the front of ambulances because a plane mirror

    • Aproduces real images
    • Bproduces magnified images
    • Cproduces lateral inversion
    • Dreverses top and bottom

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    Explanation and discussion

17. Question 17· Light: reflection· JAMB

    A spherical mirror has a radius of curvature of 20 cm. Its focal length is

    • A10 cm
    • B20 cm
    • C40 cm
    • D5 cm

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    Explanation and discussion

18. Question 18· Light: reflection· JAMB

    Convex mirrors are used as driving mirrors because they

    • Agive a wide field of view
    • Bgive magnified images
    • Cform real images
    • Dare cheap

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    Explanation and discussion

19. Question 19· Light: reflection· JAMB

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

    • A6
    • B5
    • C4
    • D3

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    Explanation and discussion

20. Question 20· 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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    Explanation and discussion