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Graded Discussion Board (GDB) for the course PHY101 (PHYSICS) will start on Thursday 04th August, 2016.

You should remember that you have to post your comments about the discussion title within the time.

This discussion board will be closed on Friday 05th August, 2016.

No comment about the Discussion topic should be posted on the regular Moderated Discussion Board which is created for each lecture.

The topic for the discussion is:

“Justify the following statement
If you calculate the speed of light from a star that is moving toward you, you will get a higher value than if you calculate the speed of light from a star that is moving away from you?
Either yes or no, give a solid reason for its justification”
Elaborate your answer by giving a solid reason, give mathematical calculation (proof) where necessary.

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Mujy ye solution mila hain koi check kar k batain ga k ye theek hain ya nahi

PHY101 GDB Due date 05-08-2016 | Yamf - VU Study Helper

Please Discuss here about this GDB.Thanks
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We are here with you hands in hands to facilitate your learning and do not appreciate the idea of copying or replicating solutions.

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Here is answer of PHY101 GDB

We all know that the speed of light is not dependent on the motion of the observer. The speed of light does not vary with time or place whether a source of light is moving towards you or away from you the light still travels at 300,000 km/s.

GDB solution !

That is NOT true.According to Special Theory of Relativity ,speed of light is a constant in vacuum.If an object is moving away from you, the frequency is lower so that change in frequency will be negative. The wavelength will be longer that is called red shift.

If an object is coming towards the you, the frequency is higher, so that change in frequency will be positive. wavelength will be shorter. that is called blue shift.


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