ECAT Physics Chapter 7 Oscillations Online Test With Answers

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ECAT Physics Chapter 7 Oscillations Online Test

Sr. # Questions Answers Choice
1 When quarter of a circle is completed, phase of vibration is: 90<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 180<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 45<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 360<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span>
2 The body oscillates due to _____ accelerates and overshoots the rest position due to______,: Applied force, inertial Restoring force, friction Frictional force, inertial Restoring force, inertial
3 Amplitude in SHM is equivalent to ______ in circular motion: Diameter Radius Circumference None of these
4 The restoring force is _____ and opposite to the applied force within ______,: Equal, elastic limit Different, the walls of the laboratory Different, elastic limit None of these
5 When a mass attached to a spring begins to move left or right from the equilibrium position, its P.E.: Increases Decreases Remains constant None of these
6 To and from motion of a body about its mean position is known as: Translatory motion Vibratory motion Rotatory motion 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: 4 gms 0.4 gm 40 gms None of these
8 A body with frequency would complete one vibration in: f seconds 1/f seconds 1 second f<sup>2</sup>second
9 If a given spring of spring constant k is cut into two indentical segments, the spring constant of each segment is: k/2 2 k 4 k None of these
10 In SHM, there is always a constant ratio between displacement if body and its: Velocity Period Mass Acceleration
11 The number of vibrations in two seconds can be expressed as______if frequency of vibration is f. f 2 f 3 f 1/2 f
12 If a force of 0.05 N produces an elongation of 20 mm in 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
13 If a mass of 10 gm is suspended from a spring of k = 9.8 Nm-1, then the extension will be: 1 cm 1 m 10 mm None of these
14 A particle is moving along a circular path with uniform speed. Its projection will execute____along the____of the circle: Circular motion, circumference Vibrator, chord SHM, diameter SHM, circumference
15 The time taken to complete one vibration is called: Frequency Amplitude Time Time period
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