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 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
2	Shock absorber of the car is an example of	A. resonance B. forced oscillations C. interference D. damped oscillations
3	The speed of sound in a medium depends on	A. The elastic property but not on the inertia property B. The inertia property but not on the elastic property C. The elastic property as well as the inertia property D. Neither the elastic property nor the inertia property
4	Fidelity refers to	A. Reproduction of original sound B. Reproduction of original image C. Reproduction of music D. Reproduction of a CD from original copy
5	In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is	A. Same B. 2 times C. 4 times D. 8 times
6	In case of mechanical waves, we study the motion of	A. a single particle B. collection of particle C. any one of them D. none of them
7	Transverse waves can be set up:	A. Solids B. Liquids C. Gases D. All of them
8	The expression of Hook's law is	A. F=ma B. F=kx C. F= -kx D. -kx=ma
9	Which of the following is not mechanical wave?	A. Sound wave B. Light wave C. wave produced in spring D. None of them
10	As the bob of the pendulum moves to and fro which of the force is experienced by the bob	A. its weight B. tension in the string C. viscous drag force by air D. all of them