McqMate
Chapters
1. |
Maximum displacement from equilibrium position is |
A. | frequency |
B. | amplitude |
C. | wavelength |
D. | period |
Answer» B. amplitude |
2. |
Displacement-time graph depicting an oscillatory motion is |
A. | cos curve |
B. | sine curve |
C. | tangent curve |
D. | straight line |
Answer» B. sine curve |
3. |
In s.h.m, velocity at equilibrium position is |
A. | minimum |
B. | constant |
C. | maximum |
D. | zero |
Answer» C. maximum |
4. |
Natural frequency of a guitar string can be changed by changing it's |
A. | area |
B. | diameter |
C. | length |
D. | stiffness |
Answer» C. length |
5. |
Over-damping results in |
A. | slower return to equilibrium |
B. | faster return to equilibrium |
C. | equilibrium is never achieved |
D. | arrhythmic return to equilibrium |
Answer» A. slower return to equilibrium |
6. |
Our eyes detect the oscillations up to |
A. | 8 Hz |
B. | 9 Hz |
C. | 6 Hz |
D. | 5 Hz |
Answer» D. 5 Hz |
7. |
For s.h.m, maximum speed is proportional to |
A. | wavelength |
B. | acceleration |
C. | time |
D. | frequency |
Answer» D. frequency |
8. |
A force that acts to return the mass to it's equilibrium position is called |
A. | frictional force |
B. | restoring force |
C. | normal force |
D. | contact force |
Answer» B. restoring force |
9. |
In cars, springs are damped by |
A. | shock absorbers |
B. | engine |
C. | tyres |
D. | brake pedals |
Answer» A. shock absorbers |
10. |
If time period of an oscillation is 0.40 s, then it's frequency is |
A. | 2 Hz |
B. | 2.5 Hz |
C. | 3 Hz |
D. | 3.5 Hz |
Answer» B. 2.5 Hz |
11. |
As amplitude of resonant vibrations decreases, degree of damping |
A. | increases |
B. | remains same |
C. | decreases |
D. | varies |
Answer» C. decreases |
12. |
Oscillations become damped due to |
A. | normal force |
B. | friction |
C. | tangential force |
D. | parallel force |
Answer» B. friction |
13. |
In s.h.m, object's acceleration depends upon |
A. | displacement from equilibrium position |
B. | magnitude of restoring force |
C. | both A and B |
D. | force exerted on it |
Answer» C. both A and B |
14. |
angular frequency of s.h.m is equal to |
A. | 2π |
B. | 2πf |
C. | 2f |
D. | 1⁄T |
Answer» B. 2πf |
15. |
For a resonating system it should oscillate |
A. | bound |
B. | only for some time |
C. | freely |
D. | for infinite time |
Answer» C. freely |
16. |
Velocity at equilibrium position is |
A. | constant |
B. | minimum |
C. | maximum |
D. | zero |
Answer» C. maximum |
17. |
If the swing moves from right to left, then velocity is |
A. | negative |
B. | positive |
C. | constant |
D. | zero |
Answer» A. negative |
18. |
Acceleration is directly related to |
A. | displacement |
B. | negative of displacement |
C. | velocity |
D. | negative of speed |
Answer» B. negative of displacement |
19. |
Gradient of velocity-time graph gives |
A. | force |
B. | frequency |
C. | wavelength |
D. | acceleration |
Answer» D. acceleration |
20. |
Magnitude of gradient of a-x graph is {{}} |
A. | ω |
B. | ω2 |
C. | ω⁄2 |
D. | ω3 |
Answer» B. ω2 |
21. |
Potential energy of system is maximum at |
A. | extreme position |
B. | mean position |
C. | in between extreme and mean position |
D. | moderate position |
Answer» A. extreme position |
22. |
In s.h.m, acceleration is always directed towards the |
A. | equilibrium position |
B. | mean position |
C. | tangent to the motion |
D. | downwards |
Answer» A. equilibrium position |
23. |
Number of oscillations per unit time is |
A. | amplitude |
B. | wavelength |
C. | frequency |
D. | period |
Answer» C. frequency |
24. |
When displacement x = 0, then kinetic energy of system is |
A. | minimum |
B. | maximum |
C. | constant |
D. | zero |
Answer» B. maximum |
25. |
Energy of a system executing s.h.m is |
A. | increasing |
B. | decreasing |
C. | constant |
D. | variable |
Answer» C. constant |
26. |
Oscillatory motion has a |
A. | straight lined graph |
B. | randomly lined graph |
C. | sinusoidal graph |
D. | asymptotic graph |
Answer» C. sinusoidal graph |
27. |
During one oscillation, phase of oscillation changes by |
A. | π rad |
B. | π⁄2 rad |
C. | 2π rad |
D. | 4π rad |
Answer» C. 2π rad |
28. |
If an object moves back and forth repeatedly around a mean position it is called |
A. | oscillating |
B. | revolving |
C. | rotating |
D. | motion |
Answer» A. oscillating |
Done Reading?