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Ask community Community Discussion Question: A dim star magnitude +14.5 explodes into a nova of magnitude +2. The factor by which the brightness
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[Post New] 20 May 2009 20:15:00 IST
   Subject: A dim star magnitude +14.5 explodes into a nova of magnitude +2. The factor by which the bright
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anakonda (798)

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A dim star magnitude +14.5 explodes into a nova of magnitude+2. The factor by which the brightness of the star hasincreased is(a) 12.5 (b) 102 (c) 103 (d) 104 (e) 105..explain..
    

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[Post New] 23 May 2009 18:48:47 IST
   Subject: A dim star magnitude +14.5 explodes into a nova of magnitude +2. The factor by which the brightn
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Chris21 (363)

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none of the options seem rite..

as the factor of change in brightness is 

where x is the difference

hence x here is 12.5

so ans=

 
Everything could be explained scientifically, but it would make no sense. It is just like describing a Beethoven symphony as a variation of wave pressure!

- Albert Einstein, your ordinary patent clerk who rocked the world of Physics!
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