What happens to light when it passes from rarer medium to denser medium?

Q: If light has a lot of energy, it will have

A: GIVEN: Light has energy

Q: Why is light both a particle and a wave?

A: Given  Why is light both a particle and a wave.

Q: When the light is passing from rarer to a denser medium, which is the correct statement?

A: When refractive index=1 , then there is no change in path of light.

Q: How was the speed of light discovered?

A:

Q: At noon the sun appears white as a) light is least scattered b) all the colours of the white light…

A: In order to reach the earth through the atmosphere, light has to travel a shorter distance only…

Q: How does light relate to the electromagnetic spectrum?

A: Electromagnetic wave is the wave of electromagnetic field. The electromagnetic wave has electric and…

Q: Does a viewer see single color or a spectrum of colors coming from a faraway drop?

A: Every raindrop is a spherical shape that behaving likes a small glass prism.

Q: Temperature of distant luminous bodies can be determined by: A) Mercury thermometers B) Gas…

A: Temperature of distant luminous bodies can be determined by: A) Mercury thermometers B) Gas…

Q: When we use powerful telescope to look at distant object in space we are actually looking. B_c_ _ n…

A:

Q: What is infinity mirror meaning?

A: Infinity mirror is when two or more parallel mirrors create smaller and smaller reflections that…

Q: Which is matched correctly with its unit of measure? O luminous flux - lumens illuminance - malus O…

A: Ans is luminous flux- lumens

Q: Light behaves like a ______ when it interacts with matter, and like a _______when it interferes with…

A: Light behaves as a particle when it interacts with matter for example, in the photoelectric effect,…

Q: How do objects appear when all of the colors of light are absorbed? Reflected? Selectively absorbed?

A: Light provides sensation to eyes so we see objects around. When light falls on an object, 3 things…

Q: Propagation of light is

A:

Q: The Sun appears to be red as it sets because: 1. Air absorbs red light less than other frequencies…

A: Sun colour is comprises of seven colors. They are calles as VIBGYOR. V stands for violet. I stands…

Q: When we look at the Sun, we are seeing it as it was 8 minutes ago. So we can only see the Sun “in…

A: The image of the object is formed on the retina of the human eye if the light ray coming from an…

Q: If a star is moving towards us, what color will it appear?

A: a star is coming toward earth. we have to predict its color. CONCEPT: as star is coming toward us…

Q: Why does not light carry momentum?

A:

Q: When does light behave as a wave? When does it behave as a particle?

A:

Q: Why does the sky appear dark instead of blue to an astronaut?

A:

Q: Which of the following diagrams represents a converging beam of light?

A:

Q: How does the behavior of the light beam differ from the behavior of a bullet fired in the same…

A: The path of the bullet is straight without showing any diffraction, and the bullet will move faster.

Q: Waves can transit both matter and energy. True or False?

A: When a wave is present in a medium ,the individual particles of the medium are only temporarily…

Q: what aspect of light is reacting to gravity: is it the wave or particle aspect, or both?

A: Q what aspect of light is reacting to gravity: is it the wave or particle aspect, or both?

Q: What is color, and how do our eyes detect it?

A: Explanation: Newton observed that color is not native in objects. Color arise in light. Sunlight, as…

Q: A 20kg dog and a 60kg dog are placed at the opposite ends of an 8-meter-long light beam. Where…

A:

Q: Does light travels through lighter atmosphere faster than heavier atmosphere?

A: The light always travel at the same speed everywhere, but light travels slower through glass, air…

Q: What are the properties of Light?

A: Light can act as a wave as well as a ray. Following are the properties of light: Reflection of…

Q: Does light take up space?

A: Given:  Light

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…

Q: What is Multichromatic light?

A: The light consists of a single wavelength is called monochromatic light.

Q: Were you able to infer the literary meaning of the word " light"?

A: The quanta of light is Photon. So, we can say that " Light is the wave of photon".

Q: When light goes from a more dense medium to a less dense one,

A: Refraction is the phenomena of light in which light bends when passing through one transparent…

Q: What is it, exactly , that waves in a light wave?

A: Light is an electromagnetic radiation. It can travel through vacuum and doesn’t require a material…

Q: What do you mean by photochromic lenses?

A: To describe a photochromic lens.

Q: List the three models of light?

A: There are three model of light by which we can describe the nature of light.

Q: When we look at the stars in the night sky we see the stars as it what?

A: Answer:When we look at the stars in the night sky we are actually looking into past . For example…

Q: Which of the following is true about light?

A: Light acts as a particle and wave at the same time. In quantum mechanics, wave and particle has dual…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.