Sound cannot travel through………………. NTS PST 15/12/2019 (8:30)
a) Iron
b) Wood
c) Water
d) Vacuum
Human ear has…………distinct pats.
a) Four
b) Two
c) One
d) Three
Sound propagates maximum in……………
a) Gas
b) Liquid
c) Solid
d) All
Speed of sound ……..in air with increase is temperature. NTS PST –P-2----(date not confirm)
a) Increase
b) Decrease
c) Remain same
d) Both b and c
Speed of sound in Iron is………..
a) 5130 m/s
b) 1530 m/s
c) 3150 m/s
d) 1503 m/s
The speed of sound in dry, sea level air at temperature of 0oC is………..
a) 820 m/s
b) 332 m/s
c) 1680 m/s
d) 5130 m/s
