OPTICAL INSTRUMENTS

Quiz
•
Physics
•
12th Grade
•
Hard

Prem Kumari Narang
Used 205+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The angular magnification of a system is less than one. Does it mean that the image formed is inverted?
Yes
No
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To increase the angular magnification of a simple microscope, one should increase:
the focal length of the lens
the power of the lens
the aperture of the lens
the object size
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An optical instrument used for magnification has power 25 D of objective and 20 D of eyepiece. Whether it is a microscope or a telescope?
Microscope
Telescope
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The eyepiece of an astronomical telescope has a focal length of 10 cm. The telescope is focused for normal vision of distant objects when the tube length is 1 m. The focal length of the objective is:
20 cm
10 cm
90 cm
100 cm
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The magnifying power of an astronomical telescope is 8 and the distance between the two lenses is 54 cm. The focal length of eye lens and objective lens will be respectively:
6 cm and 48 cm
48 cm and 6 cm
8 cm and 64 cm
64 cm and 8 cm
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Finger prints are observed by the use of :
Telescope
Microscope
Newtonian telescope
Concave lens
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the focal length of the objective lens is increased then,
Magnifying power of microscope will increase but that of telescope will decrease
Magnifying power of microscope and telescope both will increase
Magnifying power of microscope and telescope both will decrease
Magnifying power of microscope will decrease but that of telescope will increase
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