Question

3. El ojo es sensible a ondas electromagnéticas cuyas longitudes de onda están comprendidas en el entorno de 4 x 10 -7m y 7 x 10 -7m aproximadamente. ¿Cuáles son las frecuencias de esos valores límites sabiendo que la velocidad de la luz c = 3 x 108 m/s.

Answer 1

Answer:
`7.5(10)^(14) Hz` and
`4.28(10)^(14) Hz`

Step-by-step explanation:

The question in english is written below:

The eye is sensitive to electromagnetic waves whose wavelengths are approximately between
`4(10)^(-7)m` and
`7(10)^(-7)m`. What are the frequencies of these limit values ​​knowing that the speed of light
`c=3(10)^(8) m/s`?

There is an inverse relationship between the frequency
`\\u` and the wavelength
`\lambda`:

`\\u=(c)/(\lambda)` (1)

Where:

`c=3(10)^(8) m/s` is the speed of light

`\lambda` is the wavelength

Knowing this, we can find the frequency for the given wavelengths:

a) For
`\lambda_(1)=4(10)^(-7)m`

`\\u=(3(10)^(8) m/s)/(4(10)^(-7)m)`

`\\u=7.5(10)^(14)s^(-1)=7.5(10)^(14) Hz`

b) For
`\lambda_(2)=7(10)^(-7)m`

`\\u=(3(10)^(8) m/s)/(7(10)^(-7)m)`

`\\u=4.28(10)^(14)s^(-1)=4.28(10)^(14) Hz`