19) If the atmosphere were twice as thick as it currently is (extending farther into space), what effect would this have on the color the sun would appear to be? It would look whiter It would have no effect It would look bluer It would look redder

Q: 4.) Ultraviolet waves can cause all of the following except a. cancer b. sunburn c. friction

A: Ultraviolet light from the sun and other artificial sources can cause cancer by damaging the genetic…

Q: How does the dispersion of light occurs? explain.

A:

Q: Why is the sky blue during fair day and why is it red during sunset?

A: This things happen due to the phenomenon scattering of light.

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: Light From a camera flash weakens with distance in accord with the inverse-square law. Comment on an…

A: Given:  camera flash

Q: The scale of a map is a number of kilometers per centime- ter specifying the distance on the ground…

A: a) Constructive interference of light on the screen is described as,

Q: The same inverse square law which you were initially introduced to applying to gravity, applies to…

A: this is question  about inverse square law about light.

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: When a light beam approaches you, its frequency is greater and its wavelength less. Does this…

A: Given: frequency and wavelength

Q: Do you have an idea why the sky is blue? Why the clouds are white? Why the sunset is red or reddish…

A: why the sky is blue? The gases and dust particles in the atmosphere scatter the sunlight that…

Q: What is Luminance? Also give its formula.

A: The brightness of light radiation which appears to the human eye after its getting reflected from…

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: 7. When a "full" moon rises, the size appears to be larger than when it is directly overhead.  Why?…

A:

Q: 24. Analysis of radiation from space reveals information about the O composition, structure, and…

A:

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: It takes light 1.3 second to travel from here to the moon. Assuming the speed of light is 186,000…

A: Velocity is,

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: How will the color of the sky appear different on humid days compared to days of a low humidity?…

A: Generally we see the color of the sky is Blue. Actually the sky do not have any color. Color…

Q: When the "full" moon rises, the color is yellowish while its color directly overhead is white.  Why?

A:

Q: Stars have a brighter light than Sun. Hence they are not visible in the morning but then why is the…

A: In the whole lunar month the moon is the single  instant that the exact time of the full moon  when…

Q: Why does the Sun look reddish at sunrise and sunset but not at noon?

A: The sun appears reddish at sunrise and sunset due to the scattering of light due the small air…

Q: Mention and explain an everyday phenomenon in which the dispersion of light can be observed.

A: Dispersion The spreading of white light in its constituent colours (that is the spectrum of colours)…

Q: What would you observe if you tilted a barometer 30 from the vertical? Explain.

A: The pressure due to the fluid is given by  P = h d g  where, h is the height, d is the density of…

Q: How would the frequency of a light wave change if the wavelength is doubled?   Group of answer…

A: frequency and wavelength are related in such a way that the speed of light remains constant. when…

Q: What is true of the sun? It attracts light waves passing nearby. It has no effect on light waves…

A:

Q: Explain the dual nature of light.

A: Introduction: Light consists of tiny bits of energy called photons. This is a form of energy called…

Q: State which color wavelength can travel the furthest distance.   State which color wavelength…

A: To determine Which color wavelength can travel the furthest distance. Which color wavelength carries…

Q: In general, larger wavelengths tend to diffract more than smaller wavelengths

A: The amount of diffraction depends on the wavelength of light, with shorter wavelengths being…

Q: how do color influence radiation energy( specifically Temperature) and how is energy lost?

A: Color temperature is a range which is related to  the color of light emitted by an object to its…

Q: Can stars be seen from moon's surface during daytime when sun is shining?

A: The sun and the stars are clearly visible from the surface of moon. This is because there is no…

Q: Calculate the distance, d, between atoms using X-rays with a wavelength of 1.54 x10-10 m at an…

A:

Q: Explain why we see distant mountains as blue green in color instead of seeing it as green?

A: The sky is blue because the air in the atmosphere scatters blue light.

Q: When light travel from a rarer to denser medium, the speed decreases. Does this decrease in speed…

A: Light is a EM wave. The energy of wave does not depends upon the speed of wave.

Q: Red sun rise occurs for the same reason as red sunsets. But sunsets are usually more colourful than…

A: The light from the sun travels through Earth’s atmosphere it undergoes scattering before it reaches…

Q: Is the sky transparent or opaque with respect to the visible light, UV rays and infrared radiation…

A: The sky is everything that lies above earth's surface, which includes atomsphere and outer space.…

Q: Why is the sky blue at midday? -There is a large amount of water in the air and water is blue, so…

A: The reason sky is blue midday is: -Light is scattered from molecules in the sky. The molecules…

Q: What do you mean by photochromic lenses?

A: To describe a photochromic lens.

Q: Astronomers want to observes celestial objects in the electromagnetic spectrum when the atmosphere

A: Space Telescope allows astronomers to see the universe without the distortion and filtering that…

Q: If you see a red-hot star, you can be certain that its peak intensity is in the infrared region. Why…

A: The red hot star

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: 1. How does the light react to each object?

A:

Q: Explain why we have to observe stars and other astronomical objects from above Earth’s atmosphere in…

A: