Astronomy Queries of HSC candidate

For Astronomy lovers who would love to discuss about celestial objects.
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samiul_samin
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Joined: Sat Dec 09, 2017 1:32 pm

Astronomy Queries of HSC candidate

Unread post by samiul_samin » Mon Feb 04, 2019 3:07 pm

In our syllabus,The last chapter of Physics Second paper is "ASTRONOMY".I have read that chapter from many text books of HSC and I figured out that that most the books are filled with incorrect information.So this topic become confusing to the students.Unfortuately,they show no interest in the most interesting chapter of their syllabus.So,this thread is for those students who are not understanding any specific concept of Astronomy.Ask question by giving question number .Anyone can post questions.

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samiul_samin
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Re: Astronomy Queries of HSC candidate

Unread post by samiul_samin » Mon Feb 04, 2019 3:10 pm

Question no 1

What is the proof of the given theorem :?:

$m_2-m_1=5(logd_2-logd_1)$

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