Physics: Post your doubts here!

[Thought blocker]

So is this correct :¬
1I ∝ 1A^(2) ---> (we can write it as 2I ∝ 2A^(2) means any value of I will be same as A^(2))
So [a cos (60)]^(2) = 0.25A^(2)
Hence we can write it as 0.25I ∝ 0.25A^(2)

 

[Thought blocker]

yar the way mohammed salik did it dekho
they have told initial wave have intensity I
and its amplitude is a apply it to formula ._.

So is this correct :¬
1I ∝ 1A^(2) ---> (we can write it as 2I ∝ 2A^(2) means any value of I will be same as A^(2))
So [a cos (60)]^(2) = 0.25A^(2)
Hence we can write it as 0.25I ∝ 0.25A^(2)

 

[Mohammed salik]

No nahi aya ._.

Look In Paper ONE there is Way Called Using Proportionality To Solve Equations..!
When they Say Something Is Directly Proportional.. It Mean if One Double.. i.e It changes By a Factor Of Two.. So other Thing must also Change by Factor of Two..!
So We Know I ∝ A^(2).! Now Find Factor by Which Amplitude changes..! It is cos50= 0.5.. it Means Aplitude Changes by 0.5..
Amplitude Changes By Cos 60 ( 0.5)..
So I= (cos 60)^2= 0.25 Or (0.5)^2=0.25 I..!
This is The MOST I COULD EXPLAIN..! Is sey Zyada nahi Ho sakta !
Hope You Get it this time !

 

[kitkat <3 :P]

i dont think so

 

[Mohammed salik]

i dont think so

Wht?? My Method?

 

[Thought blocker]

Look In Paper ONE there is Way Called Using Proportionality To Solve Equations..!
When they Say Something Is Directly Proportional.. It Mean if One Double.. i.e It changes By a Factor Of Two.. So other Thing must also Change by Factor of Two..!
So We Know I ∝ A^(2).! Now Find Factor by Which Amplitude changes..! It is cos50= 0.5.. it Means Aplitude Changes by 0.5..
Amplitude Changes By Cos 60 ( 0.5)..
So I= (cos 60)^2= 0.25 Or (0.5)^2=0.25 I..!
This is The MOST I COULD EXPLAIN..! Is sey Zyada nahi Ho sakta !
Hope You Get it this time !

Wohi to maine kia tha.... :/
My method:¬
1I ∝ 1A^(2) ---> (we can write it as 2I ∝ 2A^(2) means any value of I will be same as A^(2))
So [a cos (60)]^(2) = 0.25A^(2)
Hence we can write it as 0.25I ∝ 0.25A^(2)

But amplitude given is acos60 not jus cos60 , I mean when squaring it, you get 0.25a^2 so I would be 0.25a^(2)I, wont it be like this ?

 

[kitkat <3 :P]

Wht?? My Method?

no not urs, rohan's

 

[Thought blocker]

no not urs, rohan's

I did the same way he did :/

 

[Mohammed salik]

no not urs, rohan's

Acha Sorry..! Misunderstood !

 

[kitkat <3 :P]

yar ratio lagana hai bus everyone is correct -_-

 

[Mohammed salik]

I did the same way he did :/

You Probably Didnt Explain it Well Enough !! IF u Mean it That Way..! Than Great !

 

[kitkat <3 :P]

Acha Sorry..! Misunderstood !

its ok

 

[Mohammed salik]

yar ratio lagana hai bus everyone is correct -_-

Hahaha..! TRUE
Why Streching this Seriously ! !

 

[kitkat <3 :P]

Hahaha..! TRUE
Why Streching this Seriously ! !

i dunno ._.

 

[Mohammed salik]

!
Easy Thing Ko Complicated Bana Diya !

i dunno ._.

 

[Thought blocker]

Wohi to maine kia tha.... :/
My method:¬
1I ∝ 1A^(2) ---> (we can write it as 2I ∝ 2A^(2) means any value of I will be same as A^(2))
So [a cos (60)]^(2) = 0.25A^(2)
Hence we can write it as 0.25I ∝ 0.25A^(2)

But amplitude given is acos60 not jus cos60 , I mean when squaring it, you get 0.25a^2 so I would be 0.25a^(2)I, wont it be like this ?

But what about that a^2 ? :/

 

[Thought blocker]

!
Easy Thing Ko Complicated Bana Diya !

Udalo mazak Bye, I'll understand it by my own, no need of help.

 

[Mohammed salik]

But what about that a^2 ? :/

Look The Bottom Line is..
Amplitude is Changed By Cos 60 (0.5).. So I= (0.25)^2=0.5 Bus!!

 

[Mohammed salik]

Udalo mazak Bye, I'll understand it by my own, no need of help.

No Yara..! Sad Mat Ho..!

 

[Thought blocker]

Look The Bottom Line is..
Amplitude is Changed By Cos 60 (0.5).. So I= (0.25)^2=0.5 Bus!!

but why we dont consider a in amplitude, Why we don't look at it :/ ?