Physics: Post your doubts here!

[Thought blocker]

Thank you

For that q4) I am doubting, do you know how to calc uncertainties not in this but in any other question ?

 

[DeViL gURl B)]

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s05_qp_1.pdf

Question 24 and 29 .. Please anyone?
Thank you

 

[DeViL gURl B)]

For that q4) I am doubting, do you know how to calc uncertainties not in this but in any other question ?

I was posting the wrong question ll I know how to do that

 

[Thought blocker]

I was posting the wrong question ll I know how to do that

ok then

 

[Hadi Murtaza]

Quest

Question 4 as well please..

Maximum speed = Upper limit of distance/Lower limit of time = 40.1/2.55 ≈ 16.4
Minimum speed = Lower limit of distance/Upper limit of time = 39.9/2.45 ≈ 15.6
Range of uncertainty = (Maximum - Minimum)/2 = (16.4 - 15.6)/2 = ± 0.4 m/s
Answer : C

 

[Thought blocker]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s05_qp_1.pdf

Question 24 and 29 .. Please anyone?
Thank you

24)
This concerns values you need to keep in memory unless they are on the data sheets, i'm not sure. Either ways, visible light falls in the range of
400 nm< λ < 700 nm. We can take any value in this range to represent out wavelength. Suppose we take 600 nm.
Then, the number of wavelengths in 1 meter = 1 / (600 * 10^-9) = 1.6667 * 10^6. So our answer is closest to B. Therefore, that's our answer.
29)

 

[Thought blocker]

Maximum speed = Upper limit of distance/Lower limit of time = 40.1/2.55 ≈ 16.4
Minimum speed = Lower limit of distance/Upper limit of time = 39.9/2.45 ≈ 15.6
Range of uncertainty = (Maximum - Minimum)/2 = (16.4 - 15.6)/2 = ± 0.4 m/s
Answer : C

Hadi, is there any other way ?
I do something completely different than you did.
So I mean, do you solve uncertainty questions like this only ?

 

[Hadi Murtaza]

Hadi, is there any other way ?
I do something completely different than you did.
So I mean, do you solve uncertainty questions like this only ?

For every operation (multplication, divison, exponentiation) der is a different method for calculating uncertainty

 

[Hadi Murtaza]

Hadi, is there any other way ?
I do something completely different than you did.
So I mean, do you solve uncertainty questions like this only ?

For division dis is da only way i knw

 

[Thought blocker]

For every operation (multplication, divison, exponentiation) der is a different method for calculating uncertainty

For division dis is da only way i knw

I want you to teach me if you are free... I'll provide you a board can you please help me out ?

 

[Thought blocker]

What the heck is Doppler Effect ?

 

[DeViL gURl B)]

24)
This concerns values you need to keep in memory unless they are on the data sheets, i'm not sure. Either ways, visible light falls in the range of
400 nm< λ < 700 nm. We can take any value in this range to represent out wavelength. Suppose we take 600 nm.
Then, the number of wavelengths in 1 meter = 1 / (600 * 10^-9) = 1.6667 * 10^6. So our answer is closest to B. Therefore, that's our answer.
29)

Thaaaaannkkk youu soo much
Dude can you PLEASE gime the estimates of the wavelengths .. If u've got 'em written.. Cuz I guess they're quite IMp in multiple choice papers..

 

[Hadi Murtaza]

What the heck is Doppler Effect ?

The change in wavelength of light which is coming from deep in da universe because of varying distance

 

[Thought blocker]

Thaaaaannkkk youu soo much
Dude can you PLEASE gime the estimates of the wavelengths .. If u've got 'em written.. Cuz I guess they're quite IMp in multiple choice papers..

I have this file available.

 

[DeViL gURl B)]

Maximum speed = Upper limit of distance/Lower limit of time = 40.1/2.55 ≈ 16.4
Minimum speed = Lower limit of distance/Upper limit of time = 39.9/2.45 ≈ 15.6
Range of uncertainty = (Maximum - Minimum)/2 = (16.4 - 15.6)/2 = ± 0.4 m/s
Answer : C

This ain't my way of doin .. But thanks

 

[Thought blocker]

The change in wavelength of light which is coming from deep in da universe because of varying distance

I know that -_- I want to understand in Deep

 

[Thought blocker]

This ain't my way of doin .. But thanks

What is your way sis ? Hope our both ways are same

 

[Thought blocker]

I want you to teach me if you are free... I'll provide you a board can you please help me out ?

Hadi Murtaza

 

[DeViL gURl B)]

I have this file available.

Thanks

 

[Thought blocker]

Thanks

Pehle check karlo usmey hain kya ? Coz meko ye malum tha