[{"id":151637,"question":"In YDS experiment, fringe spacing means the distance between two consecutive _________ fringes","choices":[{"text":"Bright","value":"A"},{"text":"Dark","value":"B"},{"text":"Any of A or B","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151636,"question":"In an interference pattern of Young's Double Slit (YDS) experiment","choices":[{"text":"Bright fringes are wider than dark fringes","value":"A"},{"text":"Dark fringes are wider than bright fringes","value":"B"},{"text":"Both dark and bright fringes are of equal width","value":"C"},{"text":"Central fringes are wider than the outer fringes","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151635,"question":"In case of constructive interference of two waves, the amplitude of the resultant wave is __________ either of the waves","choices":[{"text":"Greater than","value":"A"},{"text":"Equal to","value":"B"},{"text":"Smaller than","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":151634,"question":"The terms phase difference and path difference are","choices":[{"text":"Same","value":"A"},{"text":"Different","value":"B"},{"text":"Equal","value":"C"},{"text":"none of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":151632,"question":"In case of destructive interference of two waves, the amplitude of the resultant wave will be __________ either of the waves.","choices":[{"text":"Greater than","value":"A"},{"text":"Smaller than","value":"B"},{"text":"Equal to","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":151631,"question":"To observe interference of light, the condition, which must be met with is that the sources must be","choices":[{"text":"Monochromatic","value":"A"},{"text":"Phase coherent","value":"B"},{"text":"Both of above","value":"C"},{"text":"None of above","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151630,"question":"Two sources are said to be coherent if they have","choices":[{"text":"Same amplitude","value":"A"},{"text":"Same wavelength","value":"B"},{"text":"Definite phase relation with each other","value":"C"},{"text":"None of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151628,"question":"The appearance of colours in the soap (or oil) film results from","choices":[{"text":"Dispersion","value":"A"},{"text":"Interference","value":"B"},{"text":"Reflection","value":"C"},{"text":"Refraction","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":151627,"question":"The appearance of colours in the soap (or oil) film results from","choices":[{"text":"Dispersion","value":"A"},{"text":"Interference","value":"B"},{"text":"Reflection","value":"C"},{"text":"Refraction","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":151624,"question":"The property of light which does not change with the nature of the medium is","choices":[{"text":"Frequency","value":"A"},{"text":"Amplitude","value":"B"},{"text":"Wavelength","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":151621,"question":"A line which represents the direction of travel of a wave is known as","choices":[{"text":"Spherical wavefront","value":"A"},{"text":"Locus","value":"B"},{"text":"Ray","value":"C"},{"text":"Either B or C","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":151620,"question":"Huygen's principle states that","choices":[{"text":"Light travels in straight line","value":"A"},{"text":"Light has dual nature","value":"B"},{"text":"Either of these","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":151619,"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":151618,"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":151617,"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}]