EASY
3rd CBSE
IMPORTANT
Earn 100

Give one example of a Non-luminous object with the help of a hint given in the bracket.
(It is the earth's natural satellite).

35% studentsanswered this correctly

Important Questions on Light and Sound

EASY
3rd CBSE
IMPORTANT
Give one example transparent object with the help of a hint given in the bracket.
(It is used to make things such as windows and bottles)
EASY
3rd CBSE
IMPORTANT
What are luminous and non-luminous objects?
EASY
3rd CBSE
IMPORTANT
Why can we not see through a book?
EASY
3rd CBSE
IMPORTANT
What happens when an opaque object blocks light?
EASY
3rd CBSE
IMPORTANT
What is the difference between opaque and transparent objects?
EASY
3rd CBSE
IMPORTANT
How does the length of a shadow change during the day?
EASY
3rd CBSE
IMPORTANT
With the help of examples, differentiate between pleasant and unpleasant sounds.