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    Hi i'm stuck on this question and the closest I've got to this question is when I converted mm to m wrong -_- lol, Could anyone please help me with this question, thanks I appreciate your time.

    ps the answer is 0.75m but I don't know how to get it

    Following measurements in a double slit experiment are : slit spacing (s) = 0.4mm, fringe separation w= 1.1mm , wavelength = 590nm, Calculate the distance from the slits to the screen ?

    Thanks again
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    Name:  waves.JPG
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    to convert nm to meters multiply by 10-9 ... might help to remember that nano sounds a bit like nine
    to convert mm to meters multiply by 10-3

    first convert everything to SI units, in this case it's all meters, then calculate.
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    (Original post by Joinedup)
    Name:  waves.JPG
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    to convert nm to meters multiply by 10-9 ... might help to remember that nano sounds a bit like nine
    to convert mm to meters multiply by 10-3

    first convert everything to SI units, in this case it's all meters, then calculate.
    I did but I still don't get the answer please help ? Thanks Sorry I got the answer I rearranged my formula wrong ._. whoopsee :P
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    (Original post by Joinedup)
    Name:  waves.JPG
Views: 175
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    to convert nm to meters multiply by 10-9 ... might help to remember that nano sounds a bit like nine
    to convert mm to meters multiply by 10-3

    first convert everything to SI units, in this case it's all meters, then calculate.

    Hi could you or anyone please help me with one more question ? Its

    A sodium metal surface is illuminated with incident light of frequency 9.70x10^-14 Hz , The maximum Kinetic energy of an emitted electron is 2.49x10^-19 J , Calculate the wavelength of incident light

    Please help me I can't figure it out thank you very much
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    (Original post by Cinna21)
    Hi could you or anyone please help me with one more question ? Its

    A sodium metal surface is illuminated with incident light of frequency 9.70x10^-14 Hz , The maximum Kinetic energy of an emitted electron is 2.49x10^-19 J , Calculate the wavelength of incident light

    Please help me I can't figure it out thank you very much
    wave speed, frequency and wave length are connected by the formula
    c=fλ

    are you sure that value for frequency is correct though?
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    (Original post by Joinedup)
    wave speed, frequency and wave length are connected by the formula
    c=fλ

    are you sure that value for frequency is correct though?
    Yes the value for frequency is correct

    and thanks I got the answers I forgot to convert it to standard form so my answer was not matching the answer, why do I make silly mistakes and worse off it takes me the next day to figure it out Lol , I hope this doesn't happen in my exams , thanks though
 
 
 
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