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ECAT Physics Chapter 7 Oscillations Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | The restoring force is always directed towards: | Rest position Equilibrium position Mean position All of them |
| 2 | Amplitude is the displacement of the vibrating body from: | One extreme position to the other extreme position Mean position any one extreme position Both A and B are correct None of these |
| 3 | An oscillating body oscillates due to: | Applied force Restoring force Frictional force None of these |
| 4 | An angle of 180° in circular motion is equivalent to ______ in SHM. | Half the vibration One vibration 3/4th of a vibration None of these |
| 5 | In SHM, the acceleration is ______ when velocity is _____: | Zero, smallest Smallest, zero Zero, zero Zero, greatest |
| 6 | An object in SHM will have maximum speed when its displacement from equilibrium position is: | Infinity Maximum Zero Minimum |
| 7 | If there identical strings each of constant K are hooked together the spring constant of resultant spring will be: | 3 K 2 K K/4 K/3 |
| 8 | Hertz is unit of: | Time period Displacement Amplitude Frequency |
| 9 | A spring of constant k = 0.4 N m-1is to be extended thorugh 10 cm at a place where g = 10 m sec-2. The mass to be suspended should be: | 4 gms 0.4 gms 40 gms None of these |
| 10 | A body with frequency of would complete one vibration in: | f seconds 1/f seconds 1 second f<sup>2</sup>second |
| 11 | If a given spring of spring constant K is cut into two identical segments, the spring constant of each segment is: | K/2 2 K 4 K None of these |
| 12 | The number of vibration in two seconds can be expressed as ______ of frequency of vibration is f: |
f 2 f 3 f 1/2 f |
| 13 | If a force of 0.05 N produces an elongation of 20 mm in a string, then its spring constant will be: | 250 N m<sup>-1</sup> 25 N m<sup>-1</sup> 2.5 N m<sup>-1</sup> None of these |
| 14 | If mass of 10 gm is suspended from a spring of K=0.8 Nm-1then the extension will be: | 10 cm 1 m 10 mn None of these |
| 15 | A particle is moving along a circular path with uniform speed. Its projection will execute ___along the _____ of the circle: | Circular motion, circumference Vibratory, chord SHM, diameter SHM, circumference |
