STATEMENT – 1 : Soldiers are asked to break steps while crossing the bridge to avoid resonance situation. Because
STATEMENT – 2 : When frequency of two oscillating system are equal, their amplitude of vibration become very high

STATEMENT – 1 : If an observer places his ear at the end of a long steel pipe, he can hear two distinct sounds, when a workman hammers the other end of the pipe. Because
STATEMENT – 2 : Longitudinal as well as transverses wave can be propagated in steel

STATEMENT – 1 :speed of sound in air was found wrong because, he assumed process as isothermal. Because
STATEMENT – 2 : Flow of sound wave in a medium is very fast. Quick process suppress heat exchange, hence this process must be adiabatic in nature

STATEMENT – 1 : The velocity of sound in air, at constant temperature, does not depend on the ambient pressure. Because

STATEMENT – 2 : This is a consequence of the fact that the velocity of sound is a function of the ratio p/p but as P increases,  increases by the same factor at constant temperature

STATEMENT – 1 : The basic of Laplace correction was the exchange of heat between the region of compression and rarefaction in air is not possible. Because
STATEMENT – 2 : Air is a bad conductor of heat and velocity of sound in air is large