[{"id":155330,"question":"The waves which propagate through the oscillations of material particles are known as:","choices":[{"text":"Mechanical waves","value":"A"},{"text":"Electromagnetic waves","value":"B"},{"text":"Any of them","value":"C"},{"text":"None of them","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":155329,"question":"The restoring force is always directed towards:","choices":[{"text":"Rest position","value":"A"},{"text":"Equilibrium position","value":"B"},{"text":"Mean position","value":"C"},{"text":"All of them","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":155328,"question":"Amplitude is the displacement of the vibrating body from:","choices":[{"text":"One extreme position to the other extreme position","value":"A"},{"text":"Mean position any one extreme position","value":"B"},{"text":"Both A and B are correct","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":155327,"question":"An oscillating body oscillates due to:","choices":[{"text":"Applied force","value":"A"},{"text":"Restoring force","value":"B"},{"text":"Frictional force","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":155326,"question":"An angle of 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;\">° in circular motion is equivalent to ______ in SHM.</span>","choices":[{"text":"Half the vibration","value":"A"},{"text":"One vibration","value":"B"},{"text":"3/4th of a vibration","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":155324,"question":"In SHM, the acceleration is ______ when velocity is _____:","choices":[{"text":"Zero, smallest","value":"A"},{"text":"Smallest, zero","value":"B"},{"text":"Zero, zero","value":"C"},{"text":"Zero, greatest","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":155323,"question":"An object in SHM will have maximum speed when its displacement from equilibrium position is:","choices":[{"text":"Infinity","value":"A"},{"text":"Maximum","value":"B"},{"text":"Zero","value":"C"},{"text":"Minimum","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":155322,"question":"If there identical strings each of constant K are hooked together the spring constant of resultant spring will be:","choices":[{"text":"3 K","value":"A"},{"text":"2 K","value":"B"},{"text":"K/4","value":"C"},{"text":"K/3","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":155321,"question":"Hertz is unit of:","choices":[{"text":"Time period","value":"A"},{"text":"Displacement","value":"B"},{"text":"Amplitude","value":"C"},{"text":"Frequency","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":155320,"question":"A spring of constant k = 0.4 N m<sup>-1</sup><sub>is to be extended thorugh 10 cm at a place where g = 10 m sec</sub><sup>-2</sup>. The mass to be suspended should be:","choices":[{"text":"4 gms","value":"A"},{"text":"0.4 gms","value":"B"},{"text":"40 gms","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":155319,"question":"A body with frequency of would complete one vibration in:","choices":[{"text":"f seconds","value":"A"},{"text":"1/f seconds","value":"B"},{"text":"1 second","value":"C"},{"text":"f<sup>2</sup>second","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":155318,"question":"If a given spring of spring constant K is cut into two identical segments, the spring constant of each segment is:","choices":[{"text":"K/2","value":"A"},{"text":"2 K","value":"B"},{"text":"4 K","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":155315,"question":"The number of vibration in two seconds can be expressed as<div>______ of frequency of vibration is f:</div>","choices":[{"text":"f","value":"A"},{"text":"2 f","value":"B"},{"text":"3 f","value":"C"},{"text":"1/2 f","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":155314,"question":"If a force of 0.05 N produces an elongation of 20 mm in a string, then its spring constant will be:","choices":[{"text":"250 N m<sup>-1</sup>","value":"A"},{"text":"25 N m<sup>-1</sup>","value":"B"},{"text":"2.5 N m<sup>-1</sup>","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":155313,"question":"If mass of 10 gm is suspended from a spring of K=0.8 Nm<sup>-1</sup>then the extension will be:","choices":[{"text":"10 cm","value":"A"},{"text":"1 m","value":"B"},{"text":"10 mn","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":155312,"question":"A particle is moving along a circular path with uniform speed. Its projection will execute ___along the _____ of the circle:","choices":[{"text":"Circular motion, circumference","value":"A"},{"text":"Vibratory, chord","value":"B"},{"text":"SHM, diameter","value":"C"},{"text":"SHM, circumference","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":155311,"question":"When quarter of a circle is completed, phase of vibration is:","choices":[{"text":"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>","value":"A"},{"text":"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>","value":"B"},{"text":"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>","value":"C"},{"text":"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>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":155310,"question":"The body oscillates due to _____ accelerates and overshoots the rest position due to______,:","choices":[{"text":"Applied force, inertial","value":"A"},{"text":"Restoring force, friction","value":"B"},{"text":"Frictional force, inertial","value":"C"},{"text":"Restoring force, inertial","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":155308,"question":"Amplitude in SHM is equivalent to ______ in circular motion:","choices":[{"text":"Diameter","value":"A"},{"text":"Radius","value":"B"},{"text":"Circumference","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":155307,"question":"The restoring force is _____ and opposite to the applied force within ______,:","choices":[{"text":"Equal, elastic limit","value":"A"},{"text":"Different, the walls of the laboratory","value":"B"},{"text":"Different, elastic limit","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":155305,"question":"When a mass attached to a spring begins to move left or right from the equilibrium position, its P.E.:","choices":[{"text":"Increases","value":"A"},{"text":"Decreases","value":"B"},{"text":"Remains constant","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":155304,"question":"To and from motion of a body about its mean position is known as:","choices":[{"text":"Translatory motion","value":"A"},{"text":"Vibratory motion","value":"B"},{"text":"Rotatory motion","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":155303,"question":"In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.","choices":[{"text":"Streamline, cannot","value":"A"},{"text":"Turbulent, cannot","value":"B"},{"text":"Streamline, can","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":155302,"question":"The study of fluid in motion basically involves law of conservation of:","choices":[{"text":"Mass","value":"A"},{"text":"Energy","value":"B"},{"text":"Change","value":"C"},{"text":"Both A and C","value":"D"},{"text":"Both A and B","value":"E"}],"correctAnswer":5},{"id":155301,"question":"The drag force acting on a spherical droplet of radius 10<sup>-5</sup>m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10<sup>-7</sup>m/sec. The units comes out to be:","choices":[{"text":"10<sup>-16</sup>N","value":"A"},{"text":"10<sup>-14</sup>N","value":"B"},{"text":"10<sup>-12</sup>N","value":"C"},{"text":"10<sup>-10</sup>N","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":155300,"question":"The dimensions of viscosity are:","choices":[{"text":"M<sup>2</sup>L<sup>-1</sup>T<sup>-2</sup>","value":"A"},{"text":"M<sup>-1</sup>L<sup>1</sup>T<sup>-1</sup>","value":"B"},{"text":"M<sup>-1</sup>L<sup>-1</sup>T","value":"C"},{"text":"ML<sup>-1</sup>T<sup>-1</sup>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":155299,"question":"The unit of viscosity is SI system is:","choices":[{"text":"Kg<sup>-1</sup>m sec<sup>-1</sup>","value":"A"},{"text":"Kgm<sup>-1</sup> sec<sup>-1</sup>","value":"B"},{"text":"Kg<sup>-1</sup>m<sup>-1</sup> sec","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":155298,"question":"When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:","choices":[{"text":"Starts increasing","value":"A"},{"text":"Starts decreasing","value":"B"},{"text":"Becomes constant","value":"C"},{"text":"Is called escape velocity","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":155297,"question":"0.10 cm can be written as:","choices":[{"text":"1.0 x 10<sup>-2</sup>m","value":"A"},{"text":"1.0 x 10<sup>-3</sup>cm","value":"B"},{"text":"1.0 x 10<sup>-4</sup>cm","value":"C"},{"text":"1. x 10<sup>-4</sup>m","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":155295,"question":"Stoke;s law is not applicable when the speed of the object moving through a fluid is:","choices":[{"text":"Zero","value":"A"},{"text":"Small","value":"B"},{"text":"Large","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3}]