If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
The pitch of an acoustic device can be increased by
increasing the frequency
increasing the amplitude
decreasing the loudness
decreasing the intensity
Correct answer is A
No explanation has been provided for this answer.
The difference between sound waves and light waves is that sound waves
are transverse while light waves are longitudinal
require a medium to travel while light waves does not
can be diffracted but light waves cannot
cannot be reflected but light waves can
Correct answer is B
No explanation has been provided for this answer.
Which of the following is the exclusive property of a transverse wave?
diffraction
refraction
compression
polarization
Correct answer is D
No explanation has been provided for this answer.
58oC
62oC
64oC
76oC
Correct answer is D
100oC ....100cm
60oC ....60cm
40oC .... 0cm
θ−40100−40 = 60−0100−0
θ = 76oC