Advertisements
Advertisements
Questions
Calculate the frequency of yellow light of wavelength 550 nm. The speed of light is 3 × 108 m/s-1.
If yellow light has a wavelength of 550 nm, calculate its frequency. The speed of light is 3 × 108 m/s.
Advertisements
Solution
Given, wavelength, λ = 550 nm = 550 × `10^-9` m
Speed of light, c = 3 × `10^8` m/s
Frequency = `("Speed of light")/("Wavelength")`
= `(3 × 10^8)/(550 ×10^(-9))`
= `(3 xx 10^(8 + 8))/55`
= `(3 xx 10^16)/55`
= `(300 xx 10^14)/55`
= `60/11 xx 10^14`
= 5.4 × 1014 HZ
RELATED QUESTIONS
Name the subjective property of light related to its wavelength.
Which colour of white light is deviated by a glass prism
- the most and
- the least?
How does the speed of light in glass change on increasing the wavelength of light?
What is the range of wavelength of the spectrum of white light in Å?
Fig shows a thin beam of white light from a source S striking on one face of a prism.
- Complete the diagram to show the effect of the prism on the beam and to show what is seen on the screen.
- If a slit is placed in between the prism and the screen to pass only the light of green colour, what will you then observe on the screen?
- What conclusion do you draw from the observation in part (b) above?
Write the seven prominent colours present in white light spectrum in order of their increasing wavelength.
Name the seven prominent colours of the white light spectrum in order of their increasing frequencies.
Name four colours of the spectrum of white light which have wavelength longer than blue light.
Which colour of white light is deviated most.
What is the range of wavelength of the spectrum of white light nm?
