LIGHT, SOUND & FORCE

A shadow is always formed on the ______________ side of the source of light.

• a) same

• b) opposite

• c) both a and b

____________ helps us to see things.

• a) light

• b) noise

• c) dark

A wet floor is slippery because there is ________________ friction.

• a) low

• b) both a and c

• c) high

A shadow is formed when an ___________________ the path of light.

• a) dark

• b) object behind

• c) object block

Sounds which makes us feel happy.

• a) soft

• b) pleasant

• c) both a and b

Sound which irritates us.

• a) pleasant

• b) music

• c) noise

A __________ and ___________ are the non-luminous objects.

• a) diya, book

• b) door, table

• c) book, candle

____________ helps us to see.

• a) sound

• b) light

• c) force

We cannot see but we can hear.

• a) sound

• b) force

• c) light

To move an object, we have to apply ___________________.

• a) sound

• b) light

• c) force