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

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Question # 1

In YDS experiment, fringe spacing means the distance between two consecutive ____fringes.

Question # 2

For the virtual image, option _______ is not correct:

Question # 3

The locus of all the points in the same phase of vibration is called:

Question # 4

When the object lies between F and 2F, the image formed by is formed at:

Question # 5

A prism splits a beam of white light into seven component colors. This is so because

Question # 6

The focal length of convex lens having magnifying power of 5.55 is:

Question # 7

To see the minor details of the object by microscope, it should have:

Question # 8

A magnifier gives an image which is:

Question # 9

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

Question # 10

A virtual image is formed when object is placed:

Question # 11

Which one the following gives three regions of electromagnetic spectrum in order of increasing wavelength?

Question # 12

The distance from eye to near point is taken as:

Question # 13

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

Question # 14

Huygen's principles states that:

Question # 15

Huygen principle is used to determine:

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ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 A magnifier gives an image which is:
A. Virtual, inverted
B. Real, erect
C. Virtual, erect
D. Real, inverted
2 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
3 Least distance of distinct vision of an old man possibly becomes:
A. A little less than 25 cm
B. A little more than 25 cm
C. Much less than 25 cm
D. None of these
4 If the focal length of the convex lens is 5 cm, then to get the real and inverted image of the same size as that of object, the object should be placed at:
A. 15 cm
B. 10 cm
C. 20 cm
D. 5 cm
5 Wave length of light, on the average, is given by:
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
6 Light has:
A. Wave nature
B. Particle nature
C. Dual nature
D. None of these
7 A line which represents the direction of travel of a wave is known as:
A. Spherical Wavefront
B. Locus
C. Ray
D. Either B or C
8 The wave nature of light was proposed by:
A. Newton
B. Thomas Young
C. Huygen
D. None of these
9 The speed of the secondary wavelets as mentioned in Huygen's principle is _____ the speed of propagation of the wave itself.
A. Equal to
B. Greater than
C. Smaller than
D. None of these
10 The terms phase difference and path difference are:
A. Same
B. Different
C. Equal
D. None of these

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