Sage-Tips

When light passes straight through an object it is called?

Materials like air, water, and clear glass are called transparent. When light encounters transparent materials, almost all of it passes directly through them. Glass, for example, is transparent to all visible light. Translucent objects allow some light to travel through them.

What happens to the path of light when it goes near a very massive object like a black hole or galaxy cluster )?

The presence of a nearby massive object will deflect light from its original path. Even though the photon, the carrier of light and the electromagnetic force, has no mass of its own, the influence of gravity is universal.

What will most likely happen if a light wave moves from the air into a solid?

What will most likely happen if a light wave moves through a solid? It will increase in wavelength.

What is a black hole What do we mean by the event horizon of a black hole?

A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole’s “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos.

How does a light ray travel?

Light rays Light always travels in straight lines although its direction can be changed by reflection or refraction. When a ray of light passes from one medium to another, the light undergoes a change in direction. This displacement of light rays is called refraction.

What is refracted ray?

Refracted rays can be defined as the part of rays that moves after deviation in the medium after ray incident on its boundary from a another medium.

How do objects behave near black hole?

Any object near the rotating mass will tend to start moving in the direction of rotation. For a rotating black hole, this effect is so strong near the event horizon that an object would have to move faster than the speed of light in the opposite direction to just stand still.

What most likely will happen to the light wave when it passes from air into the water keeping the same wavelength?

What happens is that light slows down when it passes from the less dense air into the denser glass or water. This slowing down of the ray of light also causes the ray of light to change direction.

What happens to the speed of light when it travels from air to water?

When light travels from air into water, it slows down, causing it to change direction slightly. This change of direction is called refraction. When light enters a more dense substance (higher refractive index), it ‘bends’ more towards the normal line.

Which Ray of light suffers partial reflection and refraction at the boundary?

A ray of light from air suffers partial reflection and refraction at the boundary of water. Complete the diagram showing (i) the reflected ray B and (ii) the refracted ray C. How are the angles of incidence i and refraction r related?

Do light rays bend when they enter the Earth’s atmosphere?

Light rays that travel straight down do not bend, while rays that enter the Earth’s atmosphere at a shallower angle get refracted and bend towards the normal, roughly following the direction of the Earth’s curvature.

When a ray of light from air enters a denser medium?

When a ray of light from air enters a denser medium, it: A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incident is: The highest refractive index is of : The speed of light in air is 3 × 108 m s-1.

What happens to a sphere at 93\% of the speed of light?

Mr Tompkins watches this cyclist at 93\% of the speed of light and sees him as depicted in Figure 1 , contracted in the direction of motion to 37\% of its rest length. Figure 2: A sphere (a) moving at 95\% of the speed of light is contracted to an ellipsoid (b) as a measurement of its shape would show.