[{"id":155381,"question":"The wave nature of light was proposed by:","choices":[{"text":"Newton","value":"A"},{"text":"Thomas Young","value":"B"},{"text":"Huygen","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":155380,"question":"Laws of reflection and refraction can also be explained by:","choices":[{"text":"Particle nature of light","value":"A"},{"text":"Quantum nature of light","value":"B"},{"text":"Wave nature of light","value":"C"},{"text":"Complex nature of light","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":155379,"question":"The speed of the secondary wavelets as mentioned in Huygen's principle is _____ the speed of propagation of the wave itself.","choices":[{"text":"Equal to","value":"A"},{"text":"Greater than","value":"B"},{"text":"Smaller than","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":155378,"question":"When a source of light isat 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":155377,"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":155376,"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 these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":155375,"question":"Huygen principle is used to determine:","choices":[{"text":"Speed of light","value":"A"},{"text":"Location of wavefront","value":"B"},{"text":"About polarized or unpolarized light","value":"C"},{"text":"None of them","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":155374,"question":"Angle between the ray of light and the corresponding wavefront is:","choices":[{"text":"0<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":"60<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":"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":"C"},{"text":"120<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":3},{"id":155373,"question":"The locus of all the points in the same phase of vibration is called:","choices":[{"text":"Wave packet","value":"A"},{"text":"Wave front","value":"B"},{"text":"Wave number","value":"C"},{"text":"None of them","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":155372,"question":"Monochromatic light means waves 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":155371,"question":"Frequency of red color as compared to that of violet color 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":155370,"question":"Wave length of that color as compared to that of violet color 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":155369,"question":"Which one of the following 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":155368,"question":"Electromagnetic waves transport:","choices":[{"text":"Energy only","value":"A"},{"text":"Momentum only","value":"B"},{"text":"Both A and B are correct","value":"C"},{"text":"None of is correct","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":155367,"question":"Wave length of light, on the average, is given by:","choices":[{"text":"10<sup>-14</sup><sub>m</sub>","value":"A"},{"text":"10<sup>-10</sup><sub>m</sub>","value":"B"},{"text":"10<sup>-6</sup><sub>m</sub>","value":"C"},{"text":"10<sup>-4</sup><sub>m</sub>","value":"D"},{"value":"E"}],"correctAnswer":3}]