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OCR Physics Unit 2 - G482 - (June Exams Preparation)

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Reply 580

Gcayte

Original post by yodawg321

Did anyone put Gamma Rays for the wave last question?

Yeah I put gamma and radio :redface:

couldn't remember the values at all :redface:

Reply 581

redtortoise

Original post by 3chainz

yeah i got 3600 and 720 too.

What did everyone put for the receiver R thing when it's moved by 0.75 cm?

I remember saying that they have an odd number of wavelength (quarter of wavelength) and so destructive interference etc etc..

did everyone write that? :confused:

Yeah I said that it moved a quarter of the wavelength so would be at a node not sure if that was right though

Reply 582

Liberty.

Original post by Gcayte

Yeah I put gamma and radio :redface:

couldn't remember the values at all :redface:

I put UV and Visible light ;( Isn't gamma x10^-16 to -9? I got x10^-7 for them

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Reply 583

Gcayte

Original post by Liberty.

I put UV and Visible light ;( Isn't gamma x10^-16 to -9? I got x10^-7 for them

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I honestly had no idea so guessed :redface:

Reply 584

Amzith

Utterly horrible. Worst exam I've ever done :frown:

Reply 585

John Dogg

Original post by Liberty.

I put UV and Visible light ;( Isn't gamma x10^-16 to -9? I got x10^-7 for them

Posted from TSR Mobile

It said they couldn't be used because they were not visible, i put infared and UV but i think i may have put them the wrong way round. do you know what order the arrows were in from left to right ?

Reply 586

OllieGCSEs

Original post by Gcayte

Yeah I put gamma and radio :redface:

couldn't remember the values at all :redface:

I think gamma rays and radio waves are extreme... I put UV and Infrared since they're either side of visible

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Reply 587

John Dogg

What do we think the grade boundaries will be then ?

Reply 588

Loiks94

Tough stuff, boundaries will be lower than Jan 2013. Also what did you put for the resistivity? 0.3?

Reply 589

ellsss

Original post by OllieGCSEs

I think gamma rays and radio waves are extreme... I put UV and Infrared since they're either side of visible

Posted from TSR Mobile

i did this too, do you remember which way round you put them?

Reply 590

MelissaW_xo

Original post by Liberty.

I put UV and Visible light ;( Isn't gamma x10^-16 to -9? I got x10^-7 for them

Posted from TSR Mobile

I put Infrared and UV. I'm not sure though :frown:

(edited 10 years ago)

Reply 591

3chainz

Original post by OllieGCSEs

I think gamma rays and radio waves are extreme... I put UV and Infrared since they're either side of visible

Posted from TSR Mobile

yes same!!! i put UV and infrared... well infrared first then UV.... u??

Reply 592

leahcee

Original post by Loiks94

Tough stuff, boundaries will be lower than Jan 2013. Also what did you put for the resistivity? 0.3?

I got 0.3 for the resistivity :biggrin:

Reply 593

MelissaW_xo

Original post by 3chainz

yes same!!! i put UV and infrared... well infrared first then UV.... u??

Me too!

Reply 594

leahcee

Original post by 3chainz

yes same!!! i put UV and infrared... well infrared first then UV.... u??

I put infrared first and then ultraviolet second

Reply 595

3chainz

Original post by MelissaW_xo

Me too!

Reply 596

VinceVC

Original post by John Dogg

It said they couldn't be used because they were not visible, i put infared and UV but i think i may have put them the wrong way round. do you know what order the arrows were in from left to right ?

The bigger arrow was UV because energy is inversely proportional to wavelength the smaller arrow was IR dont remember the labels tho.

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Reply 597

J10

Original post by OllieGCSEs

I put 0.94ms^-1 again, because i said that as K and rootT are constant, the speed would remain the same (the wavelength would change)

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I put that as wel.

Reply 598

J10

Also, for the last question I put infrared first, with UV second.
What did the graph you had to draw look like?
Mine had a period of 0.2s, and I draw 2 full waves, 0-0.2, 0.2-0.4. Also has 0.010, 0.020, 0.030 on the sides (and the negatives of these values on the y-axis)