if possible briefly explain True or False? The wavelength of light changes when
ID: 2120417 • Letter: I
Question
if possible briefly explain
True or False? The wavelength of light changes when we pass between two materials with different indices of refraction.
We pass initially unpolarized light through a polarizing filter that is oriented at 60 degrees with respect to the horizontal. If the light had some initial intensity I, what is the intensity after it goes through the filter?
True or False? A plane mirror has it's focus infinitely far away from the surface of the mirror.
True or False? Waves have the property of reversibility. This means that if we reverse the direction of a reflected ray on a mirror, it will go back along the original path of the incoming ray, but in the opposite direction.
True or False? A diverging lens is sometimes called a negative lens because we use a negative value for the focal length in the thin-lens equation.
In optics, when a lens is not perfectly parabolic, rays that strike the lens far from the axis are bent much more than rays that strike the lens close to the axis. This means that not all of the rays will pass through the focus as we would like. This is called _______.
Explanation / Answer
1. (TRUE) The wavelength of light changes when we pass between two materials with different indices of refraction.
during refraction frequency remain same but velocity and wavelength changes
2. We pass initially unpolarized light through a polarizing filter that is oriented at 60 degrees with respect to the horizontal. If the light had some initial intensity I, what is the intensity after it goes through the filter?
ANS. i(1/4)
when polaroied are at an angle theta, out put intensity will be I X [COS(theta)^2
3.(TRUE) A plane mirror has it's focus infinitely far away from the surface of the mirror.
4.(TRUE) Waves have the property of reversibility. This means that if we reverse the direction of a reflected ray on a mirror, it will go back along the original path of the incoming ray, but in the opposite direction.
5.(TRUE) A diverging lens is sometimes called a negative lens because we use a negative value for the focal length in the thin-lens equation.
diverging lens focus is generally opposite to the direction of ray
6.In optics, when a lens is not perfectly parabolic, rays that strike the lens far from the axis are bent much more than rays that strike the lens close to the axis. This means that not all of the rays will pass through the focus as we would like. This is called
ANS. Spherical Aberration
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