ECAT Pre Engineering Physics Chapter 9 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 9 Physical Optics

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

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Physics ECAT Pre Engineering Chapter 9 Physical Optics

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Question # 1

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

Question # 2

Resolving power in mth order diffraction for grating is given by:

Question # 3

Wave length of that color as compared to that of violet color is:

Question # 4

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

Question # 5

Angle between the ray of light and the corresponding wavefront is:

Question # 6

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

Question # 7

The magnifier forms a virtual image of the object at:

Question # 8

The distance from eye to near point is taken as:

Question # 9

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

Question # 10

Speed of light in vacuum depends upon:

Question # 11

When a source of light isat very large distance,the shape of wavefront is:

Question # 12

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:

Question # 13

The magnifier forms a virtual image of the object at:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 A grating with high resolving power can distinguish _______ difference in wavelengths :
A. Larger
B. Zero
C. None of these
D. Smaller
2 The distance from eye to near point is taken as:
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
3 When the same object is viewed at a shorter distance, the image on the retina of the eye is _____ the so the object appears:
A. Greater, smaller
B. Smaller, smaller
C. Smaller, larger
D. Greater, larger
4 The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths:
A. Greater than
B. Less than
C. Equal to
D. None of these
5 Monochromatic light means waves of:
A. Same frequency
B. Same colour
C. Same wavelength
D. All of them
6 Electromagnetic waves transport:
A. Energy only
B. Momentum only
C. Both A and B are correct
D. None of is correct
7 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
8 Angle between the ray of light and the corresponding wavefront is:
A. 0°
B. 60°
C. 90°
D. 120°
9 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
10 In case of point, source of light shape of wavefront is:
A. Spherical
B. Cylindrical
C. Plane
D. None of these

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