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- 1. Multiple-choice30 seconds1 pt
when white light enters a glass slab
it reflects back
it refracts and bends towards normal
it refracts and bends away from normal
it diffracts
- 2. Multiple-choice45 seconds1 pt
define refractive index
an index formed when angle of incidence is greater then critical angle
divergent lens
an index that shows by how much pair of material refracts light.
an index formed when critical angle is greater then angle of incidence
- 3. Multiple-choice20 seconds1 pt
refractive index of water is
2.78
0.45
1.33
0.99
- 4. Multiple-choice20 seconds1 pt
which color light can be made by mixing white and red
black
pink
peach
orange
- 5. Multiple-choice30 seconds1 pt
the angle of incidence for which the angle of refraction becomes 90 degree with respect to the normal is called
angle of reflection
angle of refraction
diffraction angle
critical angle
- 6. Multiple-choice30 seconds1 pt
a _____ can easily fool a person travelling in desert due to refraction of light
carriage
mirage
total internal reflection
periscope
- 7. Multiple-choice30 seconds1 pt
Which color has the longest wavelength
indigo
violet
yellow
red
- 8. Multiple-choice30 seconds1 pt
Process of white light splitting into its constituent colors is termed as
Reflection of light
Refraction of light
Dispersion of light
Interference of light
- 9. Multiple-choice30 seconds1 pt
Names of the types of lenses are
convex and biconvex
concave and biconcave
biconvex and biconcave
convex and concave
