Does light take up space?

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

A: GIVEN: Light has energy

Q: What will happen to the object which will be less denser than water? more denser than water?

A: Step 1Density is defined as mass possessed by an object in a specified volume.

Q: What is reflection?

A: Reflection can be defiend in many ways:1. Reflection is a phenomena in which rays of light (or waves…

Q: Why is the color of the clear sky is blue?

A:

Q: Why can sunlight that illuminates Earth be approximated by plane waves, whereas the light from a…

A: Explanation:

Q: Can you make a shock wave of light by breaking the light barrier just like supersonic airplanes…

A: The airplane can break the sound barrier when it have the effective velocity greater than the…

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: What is meant by power of accommodation of the eye of a person

A: Power of accommodation : It is the maximum change in the focal length of eye lens so that near and…

Q: More than 200 years later, Albert A. Michelson sent a beam of light from a revolving mirror to a…

A: Given:  distance,d = 15 km = 15000 m  speed,c = 3 x 108 m/s

Q: Can one bit of light bounce of another bit of light?

A: Yes

Q: What about diffraction of light?

A: Diffraction is a result of superposition of two different Secondary wavelets coming from different…

Q: Why is time frozen from light's perspective?

A: Time is not frozen from light's perspective, because light does not have a perspective. There is no…

Q: How does the average speed of light in glass compare with its speed in a vacuum?

A:

Q: What happens to a ray of light when it passes through a lens?

A: Lens can converge or diverge light.

Q: What is the relationship between refraction and the speed of light?

A:

Q: How is reflection of light evident in nature?

A: Given: How is reflection of light evident in nature?

Q: What besides the amount of light affects the size of the pupil of the eye?

A: The pupil response to cognitive and emotional events occurs on a smaller scale than the light…

Q: Propagation of light is

A:

Q: How does the distance from a page to a light bulb affect the amount of light that illuminates the…

A: The illumination of a light bulb depends on the intensity of the light bulb. Higher the intensity at…

Q: Why does light bend when it passes through different materials?

A: When light ray travels from one medium to another, its speed either increase or decrease this change…

Q: A friend says, in a profound tone, that light is the only thing we can see. Is your friend correct?

A: In the electromagnetic spectrum, we can only see the frequencies which lie in the visible range.

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: What is meant by scattering of light?

A:

Q: What is refraction?

A: What is refraction?

Q: Can stars be seen from the moon’s surface in the daytime when the sun is shining?

A: On earth surface, there are atmosphere levels where scattering of sunlight occurs in daytime and…

Q: What is mirage?

A: Mirage is an optical illusion commonly occur in deserts and hot roads. It is caused by refraction of…

Q: Where does color come from?

A: Color is linked exactly with the electromagnetic radiation of certain range of wavelength visible to…

Q: What evidence was there that light was a wave?

A:

Q: Do you think that the formation of a rainbow is more a demonstration of the wavelikeor particle-like…

A: Rainbow formation: Rainbow formation is formed due to refraction between water droplets (High…

Q: Name the subjective property of light related to its wavelength.

A: The subjective property of light related to its wavelength is colour .

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: Why does the color of sunsets vary from day to day?

A: The scattering of light is process under which any light rays deflect from its regular path to…

Q: Which travels more slowly in glass , red light or violet light?

A: White light is a combination of all colours, using prism white light from our Sun can be separated…

Q: What is scattering of light?

A: The absorption light by the particles in the medium through which light passes id called Scattering…

Q: What is meant by power of a lens?

A: The power of lens tells about the bending of rays of light when it passes through the lens.

Q: If you fire a bullet through a board, it will slow down inside and emerge at a speed that is less…

A: No, light does not slow down when it passes through glass and emerges at a slower speed. When a…

Q: Will light change direction toward or away from the perpendicular when it goes from air to water?…

A: The light bends away from the normal when light is incidented from a denser medium to a rarer medium…

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.