You are given a transparent glass sheet. Suggest any two ways
to make it translucent without breaking it.
On 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?
Correct the following statements.
(i) The colour of the shadow of an object depends on its colour of the object.
(ii) Transparent objects allow light to pass through them partially
Two students while sitting across a table looked down on to
its top surface. They noticed that they could see their own
and each other’s image. The table top is likely to be made of:
(a) unpolished wood
(b) red stone
(c) glass sheet
(d) wood top covered with cloth
Which of the following can never form a circular shadow?
(a) A ball
(b) A flat disc
(c) A shoe box
(d) An ice cream cone
Which of the following is/are not always necessary to observe a shadow?
(a) Sun (b) Screen
(c) Source of light (d) Opaque object
Which of the following is/are not always necessary to observe a shadow?
(a) Sun (b) Screen
(c) Source of light (d) Opaque object
Boojho was riding in his bicycle along a straight road. He
classified the motion of various parts of the bicycle as (i)
rectilinear motion, (ii) circular motion and (iii) both rectilinear
as well as circular motion. Can you list one part of the bicycle
for each type of motion? Support your answer with reason.
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