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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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Total Questions15
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Time Allowed20
Physics ECAT Pre Engineering Chapter 9 Physical Optics
00:00
Question # 1
Resolving power in mth order diffraction for grating is given by:
Question # 2
A convex lens acts as diverging lens when the object is placed:
Question # 3
Huygen's theory cannot explain
Question # 4
Huygen principle is used to determine:
Question # 5
Electromagnetic waves transport:
Question # 6
The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths:
Question # 7
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:
Question # 8
A line which represents the direction of travel of a wave is known as:
Question # 9
The locus of all points in a medium having same phase of vibration is called
Question # 10
The velocity of light in vacuum can be changed by changing
Question # 11
To sources are said to be coherent if they have:
Question # 12
The contrast in the fringes in an interference pattern depends upon
Question # 13
Least distance of distinct vision of an old man possibly becomes:
Question # 14
A ray passing through optical center of a lens, after refraction:
Question # 15
Light has:
Top Scorers Of Physics ECAT Pre Engineering Chapter 9 Physical Optics MCQ`s Test
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F Farzand Shah Farzand Shah 17 - Apr - 2024 01 Min 00 Sec 60/60 -
D Deuspeu 25 - Sep - 2024 01 Min 40 Sec 60/60 -
U Umarkhan35429@gmail.com Khan 04 - May - 2024 05 Min 00 Sec 60/60 -
H Haq Nawaz 16 - May - 2024 02 Min 31 Sec 55/60 -
M M Saifullah 20 - Jul - 2024 04 Min 06 Sec 55/60 -
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M moeez farooq 06 - Mar - 2024 43 Min 27 Sec 55/60 -
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H Huzaifa Asim 25 - May - 2024 01 Min 32 Sec 50/60 -
A Arian Ahmed 06 - Mar - 2024 00 Min 03 Sec 45/60 -
A afzal ibrahim 06 - Mar - 2024 01 Min 55 Sec 45/60 -
A Ayesha Sohail 03 - Jun - 2024 03 Min 04 Sec 45/60 -
A Alishba Dabeer 02 - Jun - 2024 03 Min 25 Sec 45/60 -
T Tamshi Sohail 21 - Apr - 2024 06 Min 48 Sec 45/60
ECAT Physics Chapter 9 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | 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
|
| 2 | A convex lens acts as diverging lens when the object is placed: |
A. Between F and 2F
B. At 2F
C. With focal length
D. Beyond 2F
|
| 3 | Huygen's principles states that: |
A. Light has dual nature
B. Either of these
C. None of these
D. Light travels in straigth line
|
| 4 | Monochromatic light means waves of: |
A. Same frequency
B. Same colour
C. Same wavelength
D. All of them
|
| 5 | The least distance of distinct vision is: |
A. 10 cm
B. 25 cm
C. 50 cm
D. 100 cm
|
| 6 | A virtual image is formed when object is placed: |
A. Within focal length of a convex lens
B. Near the focal point of a concave lens
C. Both A and B
D. Away from 2F of a convex lens
|
| 7 | 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
|
| 8 | 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
|
| 9 | Resolving power in mth order diffraction for grating is given by: |
A. R = N x m
B. None of these
C. R = m/N
D. R = N/m
|
| 10 | The focal length of convex lens having magnifying power of 5.55 is: |
A. 5.5 cm
B. 5 cm
C. 4.5 cm
D. 6 cm
|
Test Questions
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