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	If F=0.04 N and X=4 cm then K=	A. 1 Nm^-1 B. 2 Nm^-1 C. 3 Nm^-1 D. 4 Nm^-1
2	If a freely oscillating system is subjected to an external force, then	A. free vibrations will take place B. the body will move with its natural frequency C. forced vibrations will take place D. none of them
3	Which of the following is an example of a S.H.M?	A. motion of a projectile B. motion of a train along a circular path C. motion of swing D. electrons revolving sound the nucleus
4	A second's pendulum is a pendulum whose time period is	A. 1 second B. 2 seconds C. 3 seconds D. 4 seconds
5	The velocity of sound is greatest in	A. Water B. Air C. Vacuum D. Metal
6	Time period of a simple pendulum depends upon the	A. length of the pendulum B. acceleration due to gravity C. none of them D. both of them
7	If the length of second pendulum becomes four times then its time period will become	A. Four time B. Two times C. Six times D. Eight times
8	When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:	A. Longitudinal waves B. Transverse waves C. Water waves D. Complex waves
9	A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is	A. 2 m B. 1 m C. 0.5 m D. 4 m
10	Crests and troughs are formed in:	A. Longitudinal waves B. Transverse waves C. Both of these D. None of these