ECAT Pre Computer Science Chapter 9 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 9 Physical Optics

Try The MCQ's Test For ECAT Physics Chapter 9 Physical Optics

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ECAT Physics Chapter 9 Physical Optics

00:00
Question # 1

Which one of the following phenomenon cannot be explained on the bases of Huygen's theory

Question # 2

Wave length of light, on the average, is given by:

Question # 3

The distance from eye to near point is taken as:

Question # 4

Conventionally, all the distance p, q, f are measured from _____ of the lens:

Question # 5

The image of the tip of a needle is never sharp because of

Question # 6

Light has:

Question # 7

The locus of all points in a medium having same phase of vibration is called

Question # 8

The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:

Question # 9

The property of light which does not change with the nature of the medium is:

Question # 10

Huygen's principles states that:

Question # 11

In case of point, source of light shape of wavefront is:

Question # 12

The appearance of the colour in the soap (oil) film results from:

Question # 13

A convex lens acts as diverging lens when the object is placed:

Question # 14

A line which represents the direction of travel of a wave is known as:

Question # 15

The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called

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ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 If the object is placed at 12 cm distance from a convex lens of focal length 6 cm, then we get an image of ____ as that of object:
A. Double the size
B. Same size
C. Half the size
D. None of these
2 The terms phase difference and path difference are:
A. Same
B. Different
C. Equal
D. None of these
3 The least distance of distinct vision is:
A. 10 cm
B. 25 cm
C. 50 cm
D. 100 cm
4 To see the minor details of the object by microscope, it should have:
A. High magnifying power
B. High resolving power
C. Am objective of larger focal length
D. None of these
5 A convex lens acts as diverging lens when the object is placed:
A. Beyond 2F
B. At 2F
C. With focal length
D. Between F and 2F
6 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
7 The distance from eye to near point is taken as:
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
8 To 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
9 Light has:
A. Wave nature
B. Particle nature
C. Dual nature
D. None of these
10 The locus of all the points in the same phase of vibration is called:
A. Wave packet
B. Wave front
C. Wave number
D. None of them

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