## Dino Nugget Problem 8c

$\lambda=\frac{h}{p}$

Amy Luu 2G
Posts: 90
Joined: Wed Sep 18, 2019 12:19 am

### Dino Nugget Problem 8c

Hello I'm having trouble with 8c which asks if students can see the laser pointer color. First I know you have to use the frequency of the laser (which we found in part a to be 6.50 x 10^33 Hz) to find the wavelength. Using the equation I got 4.62 x 10^-26 m. For visible light , the wavelength falls between 400nm to 700nm. However, how do you know if the wavelength calculated, 4.62 x 10^-26 m, falls in that spectrum? I also converted to nm and got 4.62 x 10^-17 nm. Does it not fall in the range?

805291863
Posts: 85
Joined: Sat Sep 14, 2019 12:16 am

### Re: Dino Nugget Problem 8c

You may need to recheck your work in 8b where you find the frequency of the light. The value I calculated was 6.78x10^14 Hz.

However, to directly answer your question, the value you calculated does not fall within the range of visible light.