Loud speaker - Sound pollution; Plastic - ?
Air pollution
Sound pollution
Water pollution
Soil pollution
Which one is the function of an ear?
Pick out the odd one.
eye
nose
brain
skin
With the help of electricity ______ helps to increase the pitch of the sound.
Microphone
Receiver
Loud speaker
Amplifier
Hold a lens against a distant object.The image we get will be_________.
Bigger than the object
Clear image
Inverted image
None of these
Eye - vision; Ear - ?
smelling
touching
tasting
hearing
We have___________sense organs.
four
five
six
three
We can see objects only if there is:
sound
darkness
light
smell
An individual with normal vision can read even the smallest letter from a distance of:
6m
8m
10m
15m
