[{"id":151616,"question":"When the source of light is at very large distance, the shape of wavefront is","choices":[{"text":"Spherical","value":"A"},{"text":"Cylindrical","value":"B"},{"text":"Plane","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151615,"question":"Speed of light in vacuum depends upon","choices":[{"text":"Frequency","value":"A"},{"text":"Wavelength","value":"B"},{"text":"Amplitude","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":151614,"question":"In case of point source of light, shape of wavefront is","choices":[{"text":"Spherical","value":"A"},{"text":"Cylindrical","value":"B"},{"text":"Plane","value":"C"},{"text":"None of above","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":151613,"question":"Huygen principle is used to determine","choices":[{"text":"Speed of light","value":"A"},{"text":"Location of wavefront","value":"B"},{"text":"About polarized and unpolarized light","value":"C"},{"text":"None of them","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":151612,"question":"Angle between ray of light and the corresponding wavefront is","choices":[{"text":"0<sup>0</sup>","value":"A"},{"text":"60<sup>0</sup>","value":"B"},{"text":"90<sup>0</sup>","value":"C"},{"text":"120<sup>0</sup>","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151611,"question":"The locus of all the points in the same phase of vibration is called","choices":[{"text":"Wave pocket","value":"A"},{"text":"Wavefront","value":"B"},{"text":"Wave number","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":151610,"question":"Monochromatic light means wave of","choices":[{"text":"Same frequency","value":"A"},{"text":"Same colour","value":"B"},{"text":"Same Wavelength","value":"C"},{"text":"All of them","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":151609,"question":"Frequency of red colour as compared to that of violet colour is","choices":[{"text":"Equal","value":"A"},{"text":"Smaller","value":"B"},{"text":"Greater","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":151608,"question":"Wavelength of red colour as compared to that of violet colour is","choices":[{"text":"Smaller","value":"A"},{"text":"Longer","value":"B"},{"text":"Equal","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":151607,"question":"Which one of the followings can act approximately as a source of monochromatic light","choices":[{"text":"Neon lamp","value":"A"},{"text":"Fluorescent tube","value":"B"},{"text":"Sodium lamp","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151606,"question":"Light waves are ","choices":[{"text":"Mechanical waves","value":"A"},{"text":"Electromagnetic waves","value":"B"},{"text":"Any of above","value":"C"},{"text":"None of above","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":151605,"question":"Electromagnetic waves transport","choices":[{"text":"Energy only","value":"A"},{"text":"Momentum only","value":"B"},{"text":"Both A and B","value":"C"},{"text":"None is correct","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151604,"question":"Wavelength of light, on the average, is given by","choices":[{"text":"10<sup>-14</sup>m","value":"A"},{"text":"10<sup>-10</sup>m","value":"B"},{"text":"10<sup>-6</sup>m","value":"C"},{"text":"10<sup>-4</sup>m","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151603,"question":"Light waves are","choices":[{"text":"Transverse waves","value":"A"},{"text":"Longitudinal waves","value":"B"},{"text":"Compressional","value":"C"},{"text":"None of them wave","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":151602,"question":"Light has","choices":[{"text":"Wave nature","value":"A"},{"text":"Dual nature","value":"B"},{"text":"Particle nature","value":"C"},{"text":"None of them","value":"D"},{"value":"E"}],"correctAnswer":2}]