Question

3. Which of the following statements is NOT true about fundamental quantities A. In Mechanics, there are three (3) fundamental quantities B. The second is defined as the time taken by 192631770 light oscillations of a particular wavelength emitted by a caesium-133 atom C. The SI standard mass is a platinum-iron alloy cylinder kept in Serves, France D. The meter's defined as the length traveled by light in vacuum during the time interval of 1/299792458 of a second E. None of these​

Answer 1

Answer:

Frequency of light

Explanation:

We have been given only.

Wavelength

And have to find the frequency   that is

And speed of the light .

And now we have to convert the wavelength in terms of .For this we know that,

In one meter there are  wavelengths of radiation. So each wavelength is .

Plugging the values of wavelength and speed of light.

We have frequency, Hertz

Finally the frequency of light up to three significant figures =

Explanation:

Hope this helps:)  ジョセフ