Concepts Of Physics MCQ Edition [Volume 1]PhysicsLight Waves

In air, sodium light has a wavelength of 589 nm . Determine its frequency in air.

Options

A3.00 10¹⁴ Hz
B5.09 10¹⁴ Hz
C5.89 10¹⁴ Hz
D1.96 10¹⁵ Hz

Correct answer

B. 5.09 10¹⁴ Hz

Step-by-step solution

Given wavelength, = 589 nm = 589 10⁻⁹ m Speed of light in air, c 3 10^8 m/s Using the relation c = , the frequency is given by: = c = 3 10^8 589 10⁻⁹ = 3 589 10¹⁷ = 3000 589 10¹⁴ 5.09 10¹⁴ Hz

Practice Light Waves on Quantrex Academy →

More from Light Waves

Determine the frequency range of light that is visible to an average human being ( 400 nm < < 700 nm ).In air, sodium light has a wavelength of 589 nm . Determine its frequency in water (refractive index = 1.33 ).In air, sodium light has a wavelength of 589 nm . Determine its speed in water (refractive index = 1.33 ).For light of wavelength 400 nm , the index of refraction of fused quartz is 1.472 , and for light of wavelength 760 nm , it is 1.452 . Determine the speeds of light for these wavel In air, sodium light has a wavelength of 589 nm . Determine its wavelength in water (refractive index = 1.33 ).In a certain liquid, the speed of yellow light is 2.4 10^8 m s ⁻¹ . Determine the refractive index of the liquid.Light of wavelength 5.0 10⁻⁷ m is emitted in phase from two narrow slits. An interference pattern is formed on a screen placed 1.0 m away. Determine the separation between the sour Separated by a distance of 1.0 cm , two narrow slits emit light in phase. The light has a wavelength of 5.0 10⁻⁷ m . An interference pattern is formed on a screen positioned 1.0 m Full Light Waves list All Concepts Of Physics MCQ Edition [Volume 1] PYQs