Optical Instrument Test

Result

Optical Instrument Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Near and far points of human eye are

A
25 cm and infinite

B
50 cm and 100 cm

C
25 cm and 50 cm

D
0 cm and 25 cm
Question 2
1 / -0

A defective eye cannot see close objects clearly because their image is formed

A
On the eye lens

B
Between eye lens and retina

C
On the retina

D
Beyond retina
Question 3
1 / -0

Retina of eye acts like ….. of camera

A
Shutter

B
Film

C
Lens

D
None of these
Question 4
1 / -0

A person who can see things most clearly at a distance of 10 cm. Requires spectacles to enable him to see clearly things at a distance of 30 cm. What should be the focal length of the spectacles

A
15 cm (concave)

B
15 cm (concave)

C
10 cm

D
0
Question 5
1 / -0

An astronaut is looking down on earth's surface from a space shuttle at an altitude of 400 km Assuming that the astronaut's pupil diameter is 5 mm and the wavelength of visible light is 500 nm The astronaut will be able to resolve linear object of the size of about

A
0.5 m

B
5 m

C
50 m

D
500 m