Online NAT IM Pre Medical Physics Test Preparation for Pakistani Students

NAT I Medical Physics

Sr. #	Questions	Answers Choice
1	The distance between node and anti-node is	λ λ/2 λ/4 2λ
2	Mechanical waves on the surface of a liquid are	Transverse Longitudinal Torsional Both transverse and longitudinal
3	Velocity of sound in a diatomic as is 300 m/sec what is its rms velocity	400 m/sec 40 m/sec 430 m/sec 300 m/sec
4	At a certain instant a stationary transverse wave is found to have maximum kinetic energy the appearance of string of that instant is:	Sinusoidal shape with amplitude A/3 Sinusoidal shape with amplitude A/2 Sinusoidal shape with amplitude A Straight line
5	With the propagation of a longitudinal wave through a material medium the quantities transmitted in the propagation direction are	Energy momentum and mass Energy Energy and mass Energy and linear momentum
6	If the amplitude of sound is doubled and the frequency reduced to one-fourth the intensity of sound at the same point will be	Increasing by a factor of 2 Decreasing by a factor of 2 Decreasing by a factor of 4 Unchanged
7	For production of beats the two sources must have	Different frequencies and same amplitude Different frequencies Different frequencies same amplitude and same phase Different frequencies and same phase.
8	The temperature at which the speed of sound becomes double as was at 27°C is	273°C 0°C 927°C 1027°C