Question

wavelength of red light is close to 700nm its true or false

Answer 1

it is 800 nm.

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Answer 2

Answer:

True, wavelength of red light is close to 700nm.

Explanation:

As we all know,

Frequency are inversely proportional to wavelength.

Red light have highest wavelength value and the lowest frequency. Consequently, it also means that it has least number of waves in one second.

Frequency of red = 400 to 484 THz

velocity of light = 3 x 10⁸ m/s

we know that,

Velocity of light = wavelength x Frequency

Wavelength = 3x 10⁸ / 400

Wavelength = 650 to 750 Nm

therefore, it is true that wavelength of red light is close to 700nm