On a sunny day you may see very bright lines formed on the bottom of a swimming pool. Why?
Absorption
Diffraction
Interference
Refraction
What principle is responsible for light spreading as it passes through a narrow slit?
polarization
diffraction
refraction
interference
What does the Snell’s law relate?
Light reflection
Light refraction
Light transmission
Light Absorption
When does the phenomenon Luminescence happen?
Photons emit while excited electrons drops down
Knocking out of electrons by photons
Photons stimulated by photons
All
On the basis of which technology does Solar cell work?
Laser technology
Photo-conduction
Thermal emission
Tyndall effect
One beam of coherent light travels path P1 in arriving at point Q and another coherent beam travels path P2 in arriving at the same point. If these two beams are to interfere destructively, what is the path difference P1 - P2?
a whole number of half-wavelengths.
zero
an odd number of half-wavelengths
a whole number of wavelengths.
Which of the following phenomena would Newton have been unable to explain using his corpuscular theory of light?
reflection
photoelectric effect
In a Young's double slit experiment, if the separation between the slits decreases, what happens to the distance between the interference fringes?
It remains the same
It increases
It decreases.
There is not enough information to determine.
In observing the diffraction pattern of a laser beam, you notice that the laser beam passes forward through a single slit with almost no spherical diffraction. What does this tell you about the wavelength of the laser with respect to the slit size?
the slit size is much smaller than the wavelength of light
this cannot be determined without knowing the distance from the slit to the screen
the slit size is almost exactly the same size as the wavelength of light
the slit size is much larger than the wavelength of light
Sunsets often have a reddish-orange color associated with them. This is attributable to the phenomenon of _____.
dispersion