Uus ( joule
(a)solid
(b) liqid
iv. Unit of sound is
(a) hertz(b) decibel
The top thick pin of a plug is always connected to the
live wire (b) neutral wire
newton (d)
а
(c) earth wire (d) fuse wire
in the blanks
Thermal expansion is least in the case of
The
of a sound depends mainly on its amplitude.
An electric meter measures the amount of electricity consumed in
Sound of about
The process of
charg
When an atom loses electron, it acquires a net
-db or more cause many health haz
occurs at the boiling point of liq
e /false .(correct the false statement.)
utrons are present inside the nucleus of an atom
dness of sound depends on frequency
expansion can only occur in solids and liquids.
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