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Home Questions H9QPY3Q82V

Target Exam

CUET

Subject

Physics

Chapter

Wave Optics

Question:

	COLUMN A		COLUMN B
1	Red color travels faster than violet color in glass	A	As wavelength increases due to Doppler's Effect the visible region shifts towards the infrared region.
2	No interference pattern is detected when two coherent sources are infinitely close to one another	B	Each point of the wavefront is the source of secondary disturbance.
3	From a point source the locus of points which have same amplitude and vibrate in same phase is sphere.	C	The fringe width is inversely proportional to the distance b/w the slits.
4	Increase in wavelength of light due to Doppler's Effect is Red Shift.	D	Wavelength of red color is greater than that of violet color

Options:

1:C; 2:D; 3:A; 4:B

1:D; 2:C; 3:B; 4:A

1:C; 2:B; 3:D; 4:A

1:C; 2:D; 3:A; 4:C

Correct Answer:

1:D; 2:C; 3:B; 4:A

Explanation:

1	Red color travels faster than violet color in glass because wavelength of red color is greater than that of violet color	Different wavelengths travel with different velocities.
2	No interference pattern is detected when two coherent sources are infinitely close to one another because The fringe width is inversely proportional to the distance b/w the slits.	There has to be finite seperation between the sources.
3	From a point source the locus of points which have same amplitude and vibrate in same phase is sphere because Each point of the wavefront is the source of secondary disturbance.	Huygen's Principle
4	Increase in wavelength of light due to Doppler's Effect is Red Shift because As wavelength increases due to Doppler's Effect the visible region shifts towards the infrared region.	Application of Doppler's Effect.

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