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	Vibratory motion is always under	A. Applied force B. Restoring force C. Periodic force D. Gravitational force
2	If a force of 0.05 N produces an elongation of 20 mm in 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
3	The restoring force is ______ and opposite tot he applied force within ______	A. Equal, Elastic limit B. Different, The walls of the laboratory C. Different, Elastic limit D. None of these
4	A spring of constant k = 0.4 N m^-1is to be extended through 10 cm at a place where g = 10 m sec^-2. The mass to be suspended should be:	A. 4 gms B. 0.4 gm C. 40 gms D. None of these
5	When quarter of a circle is completed, phase of vibration is:	A. 90° B. 180° C. 45° D. 360°
6	The string of a simple pendulum should be:	A. Heavy B. Extensible C. In-extensible D. None of these
7	The unit of spring constant is:	A. J-sec B. Metre C. Nm^-1 D. None of these
8	The restoring force is _____ and 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
9	The number of vibration in two seconds can be expressed as ______ of frequency of vibration is f:	A. f B. 2 f C. 3 f D. 1/2 f
10	Which of the following forces is responsible for SHM	A. Applied force B. Restoring force C. Fractional force D. Elastic force