Explain why we cannot see in the dark.
Q: Why do objects illuminated by moonlight lack color?
A: Objects illuminated by moonlight do not lack color. It is just that the intensity of moonlight is…
Q: When the volume of an illuminated spherical object is doubled, the luminous flux is quadrupled. Truo
A: Ans is False
Q: Does light also refract at different angle as it enters the same material? Explain
A: Light refracts whenever it travels at an angle into a substance with a different refractive index.…
Q: Why does light change direction when passing from one material (medium) to another?
A: As the ray of light passes from one medium to another, the path of ray of light is deviated.
Q: Study of the behavior of light in a variety of conditions
A: Photons have both the properties of a wave as well as a particle. Hence this type of property is…
Q: 8. The intensity of the refracted ray when light travels from an optically less dense medium to a…
A: Option a is correct that is the same as
Q: What happens to a light ray when it travels from one material into a thicker (denser) material? Into…
A: Light waves change speed when they pass across the boundary between two substances with a different…
Q: What is illumination A) The candlepower incident on a surface. B) Candela per unit area incident on…
A: We are asked about the definition of "illumination". We need to choose the correct option as per…
Q: Which characteristics are displayed by light when it interacts with the smaller objects?
A: As is true for all waves, light travels in straight lines and acts like a ray when it interacts with…
Q: Describe the light wave as it moves from one polaroid filter to another at 0 degrees. What happens…
A: We have to describe the change in intensity of light waves as it travels from one Polaroid to…
Q: 6) A light ray traveling in air strikes glass at an angle of 30 degrees to the perpendicular, what…
A:
Q: How will light diffract from the aperture below?
A: The bending of waves from an obstacle’s corner or through an opening (or aperture) and forms the…
Q: Explain most satellite communication systems have circular polarization. Your answer
A:
Q: Explain what is meant by illumination and how it is expressed.
A: Illumination: The energy of light striking a surface of a specific unit area per unit time is called…
Q: Among the following surfaces, which would not allow reflection of light? rough surface…
A: Let's consider each option one by one Rough surface Incorrect Rough surfaces do allow reflection…
Q: Why can't we see stars in day time?
A: The Earth we live is a unique planet for human to survive. It contains atmosphere with the suitable…
Q: Dispersion of white light into different colors while passing through a prism, forming a rainbow, is…
A: Here we will discuss the dispersion of white light in a prism.
Q: When a ray of light move from rarer to denser medium the incident angle is ----refracted angle:
A: According to Snell 's law Refractive index = sini/sin r
Q: Explain Luminous versus illuminated objects.
A: luminous and illuminated objects
Q: Why infrared radiations are used for photography in dark?
A:
Q: As light travels from air into water, what happens to the frequency of the light? Consider how the…
A: Light has dual nature. It can travel both as wave & particle. Light speed varies with medium.
Q: ) When two light waves are out of phase with one another: They will cancel out They will be…
A: When two light waves are out of phase with one another they will cancel out . because Destructive…
Q: Why are light waves able to travel through a vaccum whereas sound waves cannot?
A: Speed of sound: The speed of sound is the distance travelled by a sound wave per unit of time. The…
Q: Define Visible rays.
A: Visible rays are a part of electromagnetic spectrum which are detected by human eyes.
Q: 6) A light ray traveling in air strikes glass at an angle of 30 degrees to the perpendicular, what…
A: Consider a light ray strikes on glass from air at an angle i with normal and the refractive…
Q: What is the angle between a light ray and its wavefront?
A:
Q: Explain why the “invisible man” would be unable to see.
A: “invisible man” would be unable to see
Q: When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is…
A: When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is…
Q: Why do we not see color at the periphery of our vision?
A: Our retina consists of visible light-sensitive cells known as rods and cones, out of these cones are…
Q: etermine the maximum and minimum illumination on the surface of a square table measuring 1metre…
A: Given,output=400 CPheight h=2mside a=1m
Q: Why can’t we see stars in the daytime?
A: The light-scattering properties of our atmosphere spread sunlight across the sky, hence Stars…
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