Is light emitted from the surface of a massive star red-shifted or blue-shifted by gravity?

Q: Do gaps emerge between photons when a star's light stretches out and weakens?

A: Do gaps emerge between photons when a star's light stretches out and weakens?

Q: When material falls into a black hole, the material heats and emits light. In what energy band is…

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Q: During a nuclear explosion, the core of the explosion reaches temperatures of about 10,000,000 K.…

A: We know that  wiens law   λmax = b / T b = 2.897×10−3 m⋅K T = Absolute temp in  K λmax = peak wave…

Q: Calculate the temperature of a blackbody that peaks at a frequency of 7.5·108 MHz.

A: Given                     Fmax = 7.5 x 108 MHz                              = 7.5 x 108 x 106 Hz

Q: How was the speed of light discovered?

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Q: If a luminous object were moved to one-half the original distance, it would appear   a. one-half as…

A: The final distance is half of the initial distance. df=di2

Q: of illumination emitted by the sun at the greatest wavelength λmax = 0.5 pm and the greatest…

A: Given values:- Amount of illumination emitted at the greatest wavelength,(λmax)=0.5 pm -----(1)…

Q: Match the definitions to the terms. Blueshift Redshift : When a star is moving toward Earth, the…

A: The redshift and blue shift phenomena are based on the doppler effect of light. The shifting in…

Q: How far does a beam of light travel in 4.2 years?

A: A beam of light can be defined as the projection of light energy from the source of light. There are…

Q: Excited (ionized) clouds of hydrogen gas emit the visible Balmer wavelengths, which blend to produce…

A: In this problem, it is asking about the color.

Q: If the wavelength of the sun's ray is 0.5 micro meter (um), find its frequency. Take the speed of…

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Q: What happens to the wavelength of light emitted by a body as it tripled in temperature?

A: Suppose a body is emitting radiation of wavelength, & having temperature T.

Q: In the spectrum of a blackbody, the wavelength of peak intensity (a) decreases as temperature…

A: According to Wiens law product of the wavelength of peak intensity and corresponding Temperature is…

Q: radio station broadcasts with a wavelength of 2.85 m, what frequency can you find them on your radio…

A: Given  Wavelength ,= 2.85 meter  Frequency ,f =????

Q: Why is a black hole invisible?

A: A black hole is a region in space where the pulling force of gravity is so strong that light is not…

Q: Which of the following statements is TRUE regarding the different colors of light in the spectrum? *…

A: Here the correct options are (c) and  (d). That is the statements  • Light with a higher frequency…

Q: What is the Doppler shift in the wavelength of Hα ( 656.1 nm ) line from a star which is moving away…

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

A: When a beam of light passes from rarer medium to denser medium, it refracts or bends towards the…

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: True or False: When a light source approaches us, there is an increase in the frequency we measure.…

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Q: What is absorbing power and reflecting power of a perfect black body?

A: The body which absorbs all the incoming lights without reflect them back is known as perfect black…

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: If the atmosphere were twice as thick as it currently is (extending farther into space), what effect…

A: If the atmosphere were twice as thick as it currently is ( extending farther into space ) , the sky…

Q: The surface temperature of a class O blue-white star is around 40 *10^3 K. At what frequency will it…

A: Given data: Surface temperature of class O blue-white star is, T=40×103 K.

Q: We see flash earlier than thunder. Discuss.

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Q: When observed from Earth, the wavelengths of light emitted by a star are shifted toward the red end…

A: Introduction :- Here it is given that a star is emitting light and this light is being received by…

Q: Repeatedly dropping a permanent magnet on the floor causes it to become demagnetized because of in…

A: When the permanent magnet is repeatedly dropping on the floor then there will be a generation of…

Q: Stereoscopic parallax is caused by taking photographs of same objects from same point of observation…

A: Required : True or False.

Q: The spectrum of a sun-like star is monitored and it is noticed that a spectral absorption line of…

A: Given: Wavelength λ of the spectral line is 589 nm. Amplitude of shift in the spectal line ∆λ is ±1…

Q: A blackbody radiator in the shape of a sphere has a surface area of 152 If it has a temperature of…

A: Given quantities: Temperature of the radiator (T) = 1200 K Surface area of the sphere (A) = 15 cm2…

Q: Sunlight exhibits what type of spectrum?

A: A spectrum exhibited by the sunlight is the visible spectrum.

Q: The coolest stars are usually blue in color O True O False

A: Given statement : " the coolest stars are blue in colour"

Q: Can you now explain why blue stars hotter than the red stars?

A: 5) "Wien's displacement law states that the peak wavelength of the spectrum of light radiated by a…

Q: A blackbody measures 20 cm by 15 cm. If the temperature of the object is 2,500 K, how much energy…

A: The given values are,

Q: Why will body emit more radiation under similar conditions, a black body or a polished body?

A: According to the Stefan-Boltzmann law, the energy radiated is

Q: Why is light is pure energy?

A: The light is only a packet of energy. The photon is known as the packet of energy and in general the…

Q: A distant star has a peak wavelength of 0.00000049.  What is the temperature of that star

A: According to Wien’s displacement law the temperature is given by, T=0.2898×10-2 mKλmax λmaxis the…

Q: When astronomers look at the spectrum of the Sun, they noticed that the light from one edge is…

A:

Q: List the three models of light?

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

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: 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…

Q: If you observe a star’s blackbody spectrum twice, once from Earth and once from a space shuttle…

A: When radiation passes through any sample of gas, the atoms get excited by absorbing that particular…