ECAT Pre Computer Science Chapter 8 online mcq test with answers for Physics chapter 8 (Waves)

ECAT Physics Chapter 8 Waves Online Test

Sr. #	Questions	Answers Choice
1	Energy is dissipated and consequently the energy mass system do not oscillate indefinitely because of	very small energy very large energy frictional forces acceleration due to gravity
2	The total energy of spring mass system is	zero changing with time constant none of them
3	When the bob of simple pendulum is at mean position, its K.E will be	maximum minimum zero all of them
4	When the bob of simple pendulum is at extreme position, its K.E. will be	maximum minimum zero all of them
5	When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be	P.E=Kx<sup>2</sup><sub>o</sub> P.E= 1/2kx<sub>o</sub> P.E=1/2Kx<sup>2</sup><sub>o</sub> P.E=Kx<sup>2</sup><sub>o</sub>
6	When a mass 'm' is pulled slowly, the spring stretches by an amount x_o, then the work done will be	W=Kx<sub>o</sub> W=1/2Kx<sub>o</sub> W=1/2Kx<sup>2</sup><sub>o</sub> W=4Kx<sub>o</sub>
7	When a mass 'm' is pulled slowly, the spring stretches by an amount x₀,then the average force would be	F= Kx<sub>0</sub> F=1/2Kx<sub>0</sub> F=2Kx<sub>0</sub> F=4Kx<sub>0</sub>
8	If the time period a simple pendulum is 2 s, its frequency would be	2 Hz 1.5 Hz 1.0 Hz 0.5 Hz
9	If the length of a simple pendulum is 0.25 m its time period would be	1.0 s 2.0 s 3.0 s 4.0 s
10	Time period of simple pendulum is independent of	length mass acceleration due to gravity none of them
11	Time period of a simple pendulum depends upon the	length of the pendulum acceleration due to gravity none of them both of them
12	If the length of second pendulum becomes four times then its time period will become	Four time Two times Six times Eight times
13	The weight 'mg' of the bob is resolved into	one component two components three components four components
14	The bob of a simple pendulum is suspended by	string heavy inextensible string light extensible string light inextensible string
15	A simple pendulum consists of a	small light bob small heavy bob big light bob big heavy bob

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