How is the behavior of light influenced under extremely high gravitational fields, as in black holes?

Q: What is the evidence that dark matter exists?

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Q: Why is it not possible to find out what's going on in our nearest star within the span of 24 hours?

A: Einstein's special relativity explains how speed affects mass, time, and space. As per special…

Q: Find the wavelength (in mm) of maximum intensity of the cosmic microwave background radiation…

A: According to big bang theory initially the universe was at very high energy means at very high…

Q: Does Snell’s Law violate Einstein’s Special Theory of Relativity?

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Q: Why is dark matter a problem?

A: Without dark matter stars would escape their galaxies and galaxy clusters would come unbound.…

Q: Should it be possible in principle for a photon to circle a very massive star?

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Q: The surface temperature of a star is measured to be 6000 Kelvin. According to Wien's Displacement…

A: Surface temperature (T) of the star = 6000 Kelvin

Q: What connection does the Cold War have with neutron stars and black holes?

A: The formation of neutron star and black hole is same way. That is due to supernova. When supernova…

Q: Is the event horizon of a black hole the actual physical surface of the object?

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Q: Calculate the size to which the Sun should shrink to become a blackhole.

A: The limit to which an object can shrink without undergoing gravitational collapse is called…

Q: Will the Higgs-Boson particle create a black hole and destroy the Earth

A: No, it will not create a black hole and certainly not big enough to destroy the earth.

Q: How does the Doppler effect on sound waves differ from the Doppler effect on electromagnetic waves?…

A: The Doppler Effect is defined as the change in frequency observed by the observer in the case of…

Q: If the inner accretion disk around a black hole has a temperature of 1,000,000 K, at what wavelength…

A: Black holes are regions of large gravitational force in spacetime. The gravitational force is so…

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 causes X-ray emissions in a binary system of a star and a black hole?

A: A binary system is two gravitational bodies orbiting each other with a common center of mass.   A…

Q: A 2500 lb car is traveling around a 250 ft radius. The coefficient of static friction has dropped to…

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Q: Calculate, how fast you were going in meters per second when you ran the red light because it…

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Q: Whether infinite density of Black Hole proves that amount of Energy present in our Universe is…

A: The two points are nothing to do with each other. It is true that a black hole is a very dense…

Q: What is Stefan-Boltzmann constant? What is its value?

A: Stefan-Boltzmann law states that the total radiant heat energy emitted from a surface of the source…

Q: How does a gravitational red-shift differ from a Doppler red shift?

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Q: What would the wavelength of the 21 cm line be for a source moving away from the Earth at 10% the…

A: As per the Doppler effect, the observed wavelength can be found as, Here, λO, λS, v, and c…

Q: An object in Ursa Major is determined to be receding from us with a velocity of 15,000 km/s. How far…

A: v=H0dd=vH0

Q: why does light moving away from us appear redshifted?

A: When light moves away, it appears redshifted.

Q: Are there different types of black holes?

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: under what circumstances would sound have doppler redshift

A: Red shift : The shift of wavelength toward red. This means increase in wavelength. Red has longest…

Q: Does observed gravitational lensing correspond to a converging or diverging lens? Explain briefly.

A: Gravitational lensing: In this effect, the light rays bend towards massive objects in the space due…

Q: Laser light from Earth is received for an experiment by an Earth satellite. Is the light redshifted…

A: As per general relativity, gravity is capable of affecting the energy of a photon. Thus a photon…

Q: What does the direction of the magnetic field depend on In lectromagnetism?

A: In electromagnetic field the magnetic field is depend on the flow of current.

Q: In this problem, we derive the mass luminosity relation. There are three equations to be looked at.…

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Q: Suppose the temperature of a blackbody increases by 20%. What will happen to the total rate at which…

A: Energy radiated by a blackbody depends on its temperature and the relationship between temperature…

Q: Why are Balmer lines strong in the spectra of medium-temperature stars and weak in the spectra of…

A: Spectral lines are formed when electrons inside an atom make a transition between energy levels.…

Q: Calculate the temperature of the black hole with the same mass as moon. (7.3 × 1022 kg)

A: Given Mass of the block hole M = 7.3×1022 kg Find the temperature of the black hole, as following…

Q: The redshift due to the Doppler effect is caused by sources of light obscured by interstellar dust.…

A: Doppler effect : The Doppler effect is observed whenever the source of wave is moving with respect…

Q: What’s the history behind gravitational waves?

A: Gravitational waves are 'ripples' in space-time that result from some of the Universe's most…

Q: Doppler redshift in light from a star indicates that the star is_____.

A: When there is relative motion between observer and source then there is change in frequency ( or…

Q: Name the chemicals leading to the formation of black hole.

A: Black holes are formed when highly massive stars are collapsed at the end of their life cycle. After…