ECAT Pre Engineering Physics Chapter 7 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 7 Oscillations MCQ`s Test

Sr.#	Question	Answer
1	When quarter of a circle is completed, phase of vibration is:	A. 90° B. 180° C. 45° D. 360°
2	The restoring force is ______ amd opposite to the applied force within _____:	A. Equal, elastic limit B. Different, the walls of the laboratory C. Different, elastic limit D. None of these
3	An angle of 180° in circular motion is equivalent to ______ in SHM.	A. Half the vibration B. One vibration C. 3/4th of a vibration D. None of these
4	The unit of spring constant is:	A. J-sec B. Metre C. Nm^-1 D. None of these
5	If a force of 0.05 N produces an elongation of 20 mm in a string, then its spring constant will be:	A. 250 N m^-1 B. 25 N m^-1 C. 2.5 N m^-1 D. None of these
6	If mass of 10 gm is suspended from a spring of K=0.8 Nm^-1then the extension will be:	A. 10 cm B. 1 m C. 10 mn D. None of these
7	In vibrational motion(SHM)	A. P.E remains conserved B. Average K.E remain constant C. Neither P.E nor K.E remains constant D. Total energy remains constant
8	To and fro motion of a body is about its mean position is known as:	A. Translatory motion B. Vibratory motion C. Rotatory motion D. None of these
9	The body oscillates due to ______ accelerates and overshoots the rest position due to _______	A. Applied force, Inertia B. Restoring force, Friction C. Frictional force, Inertia D. Restoring force, Inertia
10	When quarter of a cycle is completed, the phase of vibration is:	A. 90° B. 180° C. 45° D. 360°