How to Determine the Speed of Light Using Planck's Constant?

[Rishav sapahi]

Homework Statement

Find the speed of light using Planck's constant measuring apparatus

Homework Equations

E=h(frequency)
E=(h*c)wavelength

The Attempt at a Solution

Can I substitute E=mc² and use the mass of electron in the equation?

 

[BvU]

The template has "all variables and given/known data", but you have nothing there...

E = mc² has to do with the total energy of an electron, moving or at rest. Is that what you have available as a known datum ?

 

[Rishav sapahi]

The template has "all variables and given/known data", but you have nothing there...

E = mc² has to do with the total energy of an electron, moving or at rest. Is that what you have available as a known datum ?

No the known variables are only frequency , wavelength and Planck's constant and I have to find speed of light.

 

[BvU]

So your relevant equation should have been $c = \lambda \; \nu$ ?
($\nu$ = frequency)

 

[Rishav sapahi]

So your relevant equation should have been $c = \lambda \; \nu$ ?
($\nu$ = frequency)[/QUO
Okay so I can calculate c by just measuring frequency and wavelength of a material .

 

[BvU]

As I said,
The template has "all variables and given/known data", but you have nothing there...

So I don't know what are known values for you.

I don't really see how Planck constant measuring apparatus can contribute in this context, unless you assume h is known and you use the instrument to determine $\nu$. Then you still need the wavelength...