ECAT Pre Computer Science Chapter 7 MCQ Test With Answer

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

Sr.#	Question	Answer
1	A body of mass 0.031 kg attached to one end of a spring of spring constant 0.3 N/m, then time period of spring mass system will be:	A. 1.5 sec B. 2.0 sec C. 2.3 sec D. 2.5 sec
2	An oscillating body oscillates due to:	A. Applied force B. Restoring force C. Frictional force D. None of these
3	A spring of constant k = 0.4 N m^-1_{is to be extended thorugh 10 cm at a place where g = 10 m sec}^-2. The mass to be suspended should be:	A. 4 gms B. 0.4 gms C. 40 gms D. None of these
4	A body with frequency would complete one vibration in:	A. f seconds B. 1/f seconds C. 1 second D. f²second
5	A particle moving uniformly along circle its projection along diameter performs	A. Linear motion B. Projectile motion C. SHM D. Rotatory motion
6	If the waves produced in a microwave oven are of wave-length 12 cm, then their frequency will be:	A. 2500 MHz B. 0.25 MHz C. 2500 KHz D. None of these
7	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
8	When a body is vibrating, the displacement from mean position:	A. Increases with time B. Decreases with time C. Changes with time D. None of these
9	Which one of the following is an example of SHM	A. Motion in a plane B. Motion in a swing C. Motion in a car D. None of these
10	The string of a simple pendulum should be:	A. Heavy B. Extensible C. In-extensible D. None of these