101.
Coherent light is many different rays of light all having the same
A
frequency
B
wavelength
C
phase
D
all of the above
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Coherent light is many different rays of light all having the same
frequency
wavelength
phase
all of the above
An interference pattern is produced when
two or more light waves meet
the crests of two waves meet
the troughs of two waves meet
all of the above
The law of reflection says that
the angle of reflection from a mirror equals the angle of incidence
waves incident on a mirror are partially reflected
all waves incident on a mirror are reflected
the angle a ray is reflected from a mirror is random
When a virtual image is created in a plane mirror
the image is upright
the image is located behind the mirror
reflected rays diverge
all of the above
When a light beam emerges from water into air, the average light speed
decreases
increases
none of the above
remains the same
The explanation for a filled root beer mug looking fuller than it is involves
reflection
both
neither
refraction
Stars twinkle when seen from Earth at night. When seen from the moon, stars
twinkle more
dont twinkle
non of the above
twinkle less
A rainbow nicely illustrates an example of light
refraction
both A and B
neither A nor B
internal reflection
A person standing waist-deep in a swimming pool appears to have short legs because of light
interference
diffraction
reflection
refraction
A penny lies in the bottom of a tea cup filled with water. As you look down on the penny, compared to its actual depth, it looks
farther away
at the same depth
none of the above
closer
A mirage can occur
when there is a layer of hot air close to the ground
on a hot day
all of the above
when cooler air is above hotter air
A beam of light emerges from water into air at an angle. The beam is bent
not at all
48 degrees upward
96 degrees upward
away from the normal
Zone plate has some similarities as well as some differences with a
Plano convex lens
Concave lens
grating
Convex lens
Which waves travels with the same velocity in all directions
O
E
O and E
Neither O nor E
Which waves travels with the different velocity in different directions
O
E
O and E
Neither O nor E
Which one is the example of uniaxial crystal?
Calcite
Tourmaline
Quartz
all of them
Which of the laser have very low efficiency
Ruby
Semiconductor
He- Ne
Ammonia gas laser
Which of the laser have high efficiency
Ruby
Semiconductor
He - Ne
Co2
Which of the following phenomena suggest that light may be a transverse wave?
Reflection
Polarisation
Photoelectric effect
Diffraction
Which is the following used to convert Unpolarised light into polarised light
Nicol Prism
Calcite prism
Tourmaline crystal
None of the above