Turn on thread page Beta
    • Thread Starter
    Offline

    1
    ReputationRep:
    Hi all

    Wondered if anyone could help please? I have been analysing some data on the de Broglie wavelength andd was asked to plot a graph of v against 1 / λ

    The question then says that if v and 1 / λ are linked by the equation λ = h /mv what does the gradient of this graph show? Use the gradient to calculate h.

    Could anyone help by helping me find what the gradient represents and how I could use this to find h?

    Many thanks
    • Aston Villa FC Supporter
    Offline

    3
    ReputationRep:
    Aston Villa FC Supporter
    (Original post by sibasford)
    Hi all

    Wondered if anyone could help please? I have been analysing some data on the de Broglie wavelength andd was asked to plot a graph of v against 1 / λ

    The question then says that if v and 1 / λ are linked by the equation λ = h /mv what does the gradient of this graph show? Use the gradient to calculate h.

    Could anyone help by helping me find what the gradient represents and how I could use this to find h?

    Many thanks
    We have y = v and x = 1/lambda

    we know that lambda = h/mv or lambda = h x 1/m x 1/v
    1/v = lambda x m/h

    v = mh/lambda.

    1/lambda = x, so gradient = mh

    if you have the m, you can calculate h

    (I think)
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: March 22, 2016

3,314

students online now

800,000+

Exam discussions

Find your exam discussion here

Poll
Should universities take a stronger line on drugs?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.