ECAT Pre Engineering Physics Chapter 10 MCQ Test With Answer

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

Sr.#	Question	Answer
1	When the source of light is at very large distance, the shape of wavefront is	A. Spherical B. Cylindrical C. Plane D. None of these
2	Speed of light in vacuum depends upon	A. Frequency B. Wavelength C. Amplitude D. None of these
3	In case of constructive interference of two waves, the amplitude of the resultant wave is __________ either of the waves	A. Greater than B. Equal to C. Smaller than D. None of these
4	Two sources are said to be coherent if they have	A. Same amplitude B. Same wavelength C. Definite phase relation with each other D. None of them
5	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
6	Electromagnetic waves transport	A. Energy only B. Momentum only C. Both A and B D. None is correct
7	Monochromatic light means wave of	A. Same frequency B. Same colour C. Same Wavelength D. All of them
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	Huygen's principle states that	A. Light travels in straight line B. Light has dual nature C. Either of these D. None of these
10	In case of point source of light, shape of wavefront is	A. Spherical B. Cylindrical C. Plane D. None of above