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Physics: Post your doubts here!

Unsa Khan

Unsa Khan

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nehaoscar said:
I can't actually find that objective in the syllabus but this is what it should be:
When a wave passes through a gap the diffraction effect is greatest when the width of the gap is about the same size as the wavelength of the wave
Click to expand...
This objective is from IGCSE physics syllabus
 
S

Sunit Saha

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Hey guys! I wanted to ask that do you guys have any idea where I can get the sample paper of May/June 2016 for As level physics?
 
M

My Name

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Catherine_1

Catherine_1

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upload_2016-3-1_13-59-22.png
upload_2016-3-1_13-59-41.png

For the P3 mark can anyone pleeeeaaasee explain
1. is it that Turns of Y or turns of X important is for induced emf in this case and why?:D
upload_2016-3-1_14-1-35.png
Any reasoning for point 7 and 8?:D Also could anyone explain the diagram arrangement of coil X and Y, like would it be arranged in opposite manner or same side?:D :)


1. Also, in paper 5 to change the frequency of the alternating current on any coil how is it done?
One paper had this has the marking scheme:
Marking scheme -->
(Variable frequency AC power supply or signal generator (method of varying frequency).

2. So like, What is the basic difference between the two methods?:D

Pleaseee do help!:D :p :)

Marking scheme (Variable frequency AC power supply or signal generator (method of varying frequency).
 
The Sarcastic Retard

The Sarcastic Retard

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Catherine_1 said:
View attachment 59532
View attachment 59533

For the P3 mark can anyone pleeeeaaasee explain
1. is it that Turns of Y or turns of X important is for induced emf in this case and why?:D
View attachment 59534
Any reasoning for point 7 and 8?:D Also could anyone explain the diagram arrangement of coil X and Y, like would it be arranged in opposite manner or same side?:D :)


1. Also, in paper 5 to change the frequency of the alternating current on any coil how is it done?
One paper had this has the marking scheme:
Marking scheme -->
(Variable frequency AC power supply or signal generator (method of varying frequency).

2. So like, What is the basic difference between the two methods?:D

Pleaseee do help!:D :p :)

Marking scheme (Variable frequency AC power supply or signal generator (method of varying frequency).
Click to expand...
Paper 5?? :p
 
nehaoscar

nehaoscar

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P5 - S15 - 51
Last question
log k = y intercept
upload_2016-3-1_18-1-55.png
upload_2016-3-1_18-2-39.png
Can anyone explain how it results in the final equation of 1/2(maxk-mink)/k ??
Like % uncertainty is just [(change in k)/k ]*100 so how to get all the 1/2 and stuff?? :p
And also is there another way to do it??
 
Catherine_1

Catherine_1

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nehaoscar said:
P5 - S15 - 51
Last question
log k = y intercept
View attachment 59535
View attachment 59536
Can anyone explain how it results in the final equation of 1/2(maxk-mink)/k ??
Like % uncertainty is just [(change in k)/k ]*100 so how to get all the 1/2 and stuff?? :p
And also is there another way to do it??
Click to expand...
I just prefer the max min method that is the easiest and like the first thing the examiners prefer too.:p
 
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