ECAT Pre Computer Science Chapter 10 MCQ Test With Answer

Top Scorers Of ECAT Physics Chapter 10 Optical Instruments MCQ`s Test

Sr.#	Question	Answer
1	In an interference pattern of Young's Double Slit (YDS) experiment	A. Bright fringes are wider than dark fringes B. Dark fringes are wider than bright fringes C. Both dark and bright fringes are of equal width D. Central fringes are wider than the outer fringes
2	The terms phase difference and path difference are	A. Same B. Different C. Equal D. none of these
3	Wavelength of red colour as compared to that of violet colour is	A. Smaller B. Longer C. Equal D. None of these
4	Frequency of red colour as compared to that of violet colour is	A. Equal B. Smaller C. Greater D. None of these
5	The locus of all the points in the same phase of vibration is called	A. Wave pocket B. Wavefront C. Wave number D. None of these
6	Wavelength of light, on the average, is given by	A. 10^-14m B. 10^-10m C. 10^-6m D. 10^-4m
7	Electromagnetic waves transport	A. Energy only B. Momentum only C. Both A and B D. None is correct
8	In YDS experiment, fringe spacing means the distance between two consecutive _________ fringes	A. Bright B. Dark C. Any of A or B D. None of these
9	In case of point source of light, shape of wavefront is	A. Spherical B. Cylindrical C. Plane D. None of above
10	To observe interference of light, the condition, which must be met with is that the sources must be	A. Monochromatic B. Phase coherent C. Both of above D. None of above