ECAT Pre General Science Chapter 9 online mcq test with answers for Physics chapter 9 (Physical Optics)

ECAT Pre General Science Physics Chapter 9 Physical Optics Online Test

Sr. #	Questions	Answers Choice
1	The wave nature of light was proposed by:	Newton Thomas Young Huygen None of these
2	Laws of reflection and refraction can also be explained by:	Particle nature of light Quantum nature of light Wave nature of light Complex nature of light
3	The speed of the secondary wavelets as mentioned in Huygen's principle is _____ the speed of propagation of the wave itself.	Equal to Greater than Smaller than None of these
4	When a source of light isat very large distance,the shape of wavefront is:	Spherical Cylindrical Plane None of these
5	Speed of light in vacuum depends upon:	Frequency Wavelength Amplitude None of these
6	In case of point, source of light shape of wavefront is:	Spherical Cylindrical Plane None of these
7	Huygen principle is used to determine:	Speed of light Location of wavefront About polarized or unpolarized light None of them
8	Angle between the ray of light and the corresponding wavefront is:	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> 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> 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> 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>
9	The locus of all the points in the same phase of vibration is called:	Wave packet Wave front Wave number None of them
10	Monochromatic light means waves of:	Same frequency Same colour Same wavelength All of them
11	Frequency of red color as compared to that of violet color is:	Equal Smaller Greater None of these
12	Wave length of that color as compared to that of violet color is:	Smaller Longer Equal None of these
13	Which one of the following can act approximately as a source of monochromatic light;	Neon lamp Fluorescent tube Sodium lamp None of these
14	Electromagnetic waves transport:	Energy only Momentum only Both A and B are correct None of is correct
15	Wave length of light, on the average, is given by:	10<sup>-14</sup><sub>m</sub> 10<sup>-10</sup><sub>m</sub> 10<sup>-6</sup><sub>m</sub> 10<sup>-4</sup><sub>m</sub>

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