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 the time period a simple pendulum is 2 s, its frequency would be	A. 2 Hz B. 1.5 Hz C. 1.0 Hz D. 0.5 Hz
2	Acceleration of the mass at any instant is given by	A. a=k/m x B. a= - m/k x C. a = - k/m x D. a=m/k x
3	The waves which propagate out in space due to oscillation of electric and magnetic fields are known as	A. e.m. waves B. mechanical waves C. sound waves D. water waves
4	When a wave is travels from one place to another, it transfers:	A. Matter B. Energy C. Momentum D. Both B and C
5	If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be	A. Increasing by a factor of 2 B. Decreasing by a factor of 2 C. Decreasing by a factor of 4 D. Unchanged
6	Velocity of sound in vacuum (in m/s) is	A. 330 B. 1000 C. 156 D. 0
7	Waves transport energy	A. without transport energy B. with matter C. both of them D. none of them
8	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
9	The square of 0.4 is:	A. Greater than 0.4 B. Smaller than 0.4 C. Equal to 0.4 D. None of them
10	The example of mechanical wave is	A. waves in ropes B. waves on water surface C. waves in air D. all of them