ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

Top Scorers Of ECAT Physics Chapter 8 Waves MCQ`s Test

Sr.#	Question	Answer
1	The number of vibrating body at any instant from its equilibrium position is called	A. displacement B. frequency C. amplitude D. time period
2	For production of beats the two sources must have	A. Different frequencies and same amplitude B. Different frequencies C. Different frequencies, same amplitude and same phase D. Different frequencies and same phase
3	The temperature at which the speed of sound becomes double as was at 27°C is	A. 273°C B. 0°C C. 927°C D. 1027°C
4	The wave motion set up in any medium depends upon:	A. Elasticity B. Inertia C. Density D. All of these
5	The process in which energy is dissipated from the oscillating system is known as	A. resonance B. interference C. diffraction D. damping
6	A heavily damped system has a fairly	A. sharp resonance curve B. flat resonance curve C. both of them D. none of them
7	Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:	A. Rope B. Coil of spring C. Water D. All of them
8	Through which character we can distinguish the light waves from sound waves	A. Interference B. Refraction C. Polarization D. Reflection
9	Velocity of sound in a diatomic as is 300 m/sec. what is its rms velocity?	A. 400 m/sec B. 40 m/sec C. 430 m/sec D. 300 m/sec
10	While describing the motion of a simple pendulum, the frictional effects are	A. taken into account B. completely ignored C. partially ignored D. none of them