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

Electromagnetic waves transport:

Question # 2

The size of the image is maximum when its distance from the magnifying glass is:

Question # 3

The magnifier forms a virtual image of the object at:

Question # 4

Speed of light in vacuum depends upon:

Question # 5

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

Question # 6

A grating with high resolving power can distinguish _______ difference in wavelengths :

Question # 7

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

Question # 8

The magnifier forms a virtual image of the object at:

Question # 9

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:

Question # 10

The terms phase difference and path difference are:

Question # 11

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

Question # 12

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

Question # 13

Laws of reflection and refraction can also be explained by:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 The appearance of the colour in the soap (oil) film results from:
A. Dispersion
B. Interference
C. Reflection
D. Refraction
2 Monochromatic light means waves of:
A. Same frequency
B. Same colour
C. Same wavelength
D. All of them
3 The locus of all points in a medium having same phase of vibration is called
A. Crest
B. Trough
C. Wavelength
D. Wave-front
4 Certain light of wavelength 600 nm is used to view an object under the microscope. If the aperture of its objective is 1.22 cm, then the limiting angle of resolution will be:
A. 6 x 10-5rad
B. 7 x 10-5rad
C. 8 x 10-5rad
D. None of these
5 Huygen's principles states that:
A. Light has dual nature
B. Either of these
C. None of these
D. Light travels in straigth line
6 When the object lies between F and 2F, the image formed by is formed at:
A. Real
B. Virtual
C. Diminished
D. Erect
7 The image of the tip of a needle is never sharp because of
A. Polarization of light
B. Interference of light
C. Diffraction of light
D. Reflection of light
8 A ray passing through optical center of a lens, after refraction:
A. Passes through focus
B. Go deviated
C. Retraces its path
D. Both B and C
9 The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:
A. 1
B. 0.2
C. 2
D. 0.1
10 The magnifier forms a virtual image of the object at:
A. None of these
B. Least distance of distinct vision
C. Much farther than the least distance
D. Both A and B are correct

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