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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
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Question # 1
When the object lies between F and 2F, the image formed by is formed at:
Question # 2
The image of the tip of a needle is never sharp because of
Question # 3
The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths:
Question # 4
A virtual image is formed when object is placed:
Question # 5
The focal length of convex lens having magnifying power of 5.55 is:
Question # 6
Light waves are:
Question # 7
A grating with high resolving power can distinguish _______ difference in wavelengths :
Question # 8
The property of light which does not change with the nature of the medium is:
Question # 9
Light has:
Question # 10
When a source of light isat very large distance,the shape of wavefront is:
Question # 11
Which one the following gives three regions of electromagnetic spectrum in order of increasing wavelength?
Question # 12
To observe interference of light, the condition, which must be met with is that the sources must be:
Question # 13
A ray passing through optical center of a lens, after refraction:
Question # 14
In case of point, source of light shape of wavefront is:
Question # 15
Huygen principle is used to determine:
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 -
D Danish Mehmood Awan 08 - Mar - 2024 04 Min 25 Sec 55/60 -
M moeez farooq 06 - Mar - 2024 43 Min 27 Sec 55/60 -
M M Umer Arain 10 - Nov - 2024 00 Min 15 Sec 50/60 -
A Adan Zahra 14 - Mar - 2024 01 Min 22 Sec 50/60 -
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 | When a source of light isat very large distance,the shape of wavefront is: |
A. Spherical
B. Cylindrical
C. Plane
D. None of these
|
| 2 | 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
|
| 3 | 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
|
| 4 | Huygen's theory cannot explain |
A. Diffraction
B. Interference
C. Polarization
D. Photoelectric effect
|
| 5 | The appearance of the colour in the soap (oil) film results from: |
A. Dispersion
B. Interference
C. Reflection
D. Refraction
|
| 6 | 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
|
| 7 | In an interference pattern of Young's double slit(YDS) experiment: |
A. Bright fringesare wider than dark fringes
B. Dark fringes are wider than bright fringes
C. Both dark and bright fringes are of equal width
D.
Central fringes are wider than the outer fringes
|
| 8 | The wave nature of light was proposed by: |
A. Newton
B. Thomas Young
C. Huygen
D. None of these
|
| 9 | In case of point, source of light shape of wavefront is: |
A. Spherical
B. Cylindrical
C. Plane
D. None of these
|
| 10 | The distance from eye to near point is taken as: |
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
|
Test Questions