Chaper – 12 : Light, Shadow and
Reflection
Question 1. Suggest a situation where we obtain more than one
shadow of an object at a time.
Question 2. 0n a sunny day, does a bird or
an aeroplane flying high in the sky cast its shadow on the ground?
Under what circumstances can we see their shadow on the ground?
Question
3. Three identical towels of red, blue
and green colour are hanging on a clothesline in the sun. ‘
What would be the colour of shadows of these towels?
Question 4. Using a pinhole camera a student observes
the image of two of his friends, standing in sunlight, wearing yellow and red
shirt respectively. What will be the colours of the shirts in the
image?
Question 5. Explain that light has the property of rectilinear
propagation.
Question
6. Rahul stands in front mirror and
observes all details but when he stands in front of opaque object he
cannot observe details. What is the reason behind this? Write difference
between shadow and image.
Question 7. What are transparent, translucent and opaque objects?
Give example of each.
Question
8. Draw Diagram of the following
:
(a) Solar Eclipse
(b) Lunar Eclipse
(c) Ray
(d) Beam of Light
Question 9. Show and activity to exhibit that light travels in a straight
line.
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