Practice Sheets on Light Reflection & Refraction

Light reflection and refraction Worksheet-31

1. On covering a portion of a lens with a black sheet

A. Full image is formed

B. Full image of reduced brightness is formed

C. Full image of increased brightness is formed

D. Size depending on the coverage area

Light reflection and refraction Worksheet-32

11. If an object is placed 10 cm in front of a concave mirror of focal length 20 cm the image will be

A. Diminished, upright, virtual

B. Enlarged, upright, virtual

C. Diminished, inverted, real

D. Enlarged, upright, real

12. Under which of the following conditions will a convex mirror of focal length f produce an image that is erect, diminished and virtual

A. Only when 2f > u > f               B. Only when u = f

Light reflection and refraction Worksheet-33

21. We can see the sun about two minutes before the actual sunrise and two minutes after the actual sunset. Which phenomenon of light is attributed to advanced sunrise and delayed sunset.

A. Reflection of the light

B. Refraction of the light

C. Scattering of the light  

D. Dispersion of the light

22. In the formation of a rainbow light from the sun on water droplets undergoes

A. Dispersion only

B. Only total internal reflection