25
Minutes
47
Questions
1 / -0
Marking
Q1. The muscular diaphragm that controls the size of the pupil is
cornea
ciliary muscles
iris
retina
Q2. The blue color of the sky is due to:
refraction of light
dispersion of light
diffraction of light
scattering of light
Q3. Having two eyes facilitates in
A: Increasing the field of view
B: Bringing a three-dimensional view
C: Developing the concept of distance/ size
Then the correct option is/are
A only
A and B only
B only
A, B, and C
Q4. Due to the atmospheric refraction of sunlight, the time from sunrise to sunset is lengthened by about:
6 minutes
2 minutes
4 minutes
5 minutes
Q5. The atmospheric refraction of light causes the twinkling of:
planets only
stars only
planets and stars
stars and satellites
Q6. The black opening between the aqueous humor and the lens is called
retina
iris
cornea
pupil
Q7. Near and far points of a young person normal eye respectively are
0 and infinity
0 and 25 cm
25 cm and infinity
25 cm and 150 cm.
Q8. The twinkling of stars is due to the atmosphere:
reflection of light
dispersion of light
interference of light
refraction of light
Q9. Which of the following color of white light has the maximum wavelength?
red
orange
violet
blue
Q10. The defect of vision in which the person is able to see a distant objects distinctly but cannot see nearby objects clearly is called
Long-sightedness
Far-sightedness
Hypermetropia
All above
Q11. Myopia and hypermetropia can be corrected by
Concave and a plano-convex lens
Concave and convex lens
Convex and concave lens
Plano-concave lens for both defects.
Q12. Which of the following color of white light has the least wavelength?
red
orange
violet
blue
Q13. Bi-focal lenses are required to correct
astigmatism
coma
myopia
presbyopia
Q14. The splitting up of white light into seven colors on passing through a glass prism is called:
refraction
deflection
dispersion
scattering
Q15. The image formed on the retina of the human eye is
virtual and inverted
real and inverted
real and erect
virtual and erect
...and 32 more challenging questions available in the interactive simulator.