Sound waves produced by……………..
a) Linear motion
b) Circular motion
c) Vibrating motion
d) Transitional motion
Sound cannot travel through………………. NTS PST15/12/2019 (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
