Light of wavelength `5000Å` falls on a plane reflecting surface. What are the wavelength and frequency of reflected light ? For what angle of incidence is the reflected ray normal to the incident ray ?
Text Solution
Verified by Experts
Here, `lambda = 5000 Å`. On reflection, there is no change in wavelength or frequency. `:.` Wavelength of reflected light `lambda' = lambda = 5000 Å`. Frequency of reflected light, `v = ( c)/(lambda) = (3 xx 10^(8))/(5000 xx 10^(-10)) = 6 xx 10^(14)Hz` When reflected ray is normal to the incident ray. `angle i + angle r = 90^(@)` As `angle r = angle i :. 2 angle i = 90^(@) angle i = (90^(@))/(2) = 45^(@)`
Topper's Solved these Questions
OPTICS
PRADEEP|Exercise Very short answer question|5 Videos
OPTICS
PRADEEP|Exercise very short answer questions|1 Videos
Light of wavelength 6000Å falls on a plane reflecting surface. The reflected wavelength is
Light of wavelength 6000 Å falls on a plane reflecting surface. The reflected wavelength is.
Light of wavelength 6000 Å falls on a plane reflecting surface. What are the wavelength and frequency of reflected light. If angle between incident ray and reflected ray is 60^@ , what is the angle of incidence ?
Ligtht falls on a plane reflecting surface.For what angler of incidence is the reflected ray normal to the incident ray.
Light of wavelength 5000 A.falls on a plane reflecting surface. The frequency of reflected light is…
What is the angle of incidence of a ray if the reflected ray is at an angle of 90^(@) to the incident ray?
If the angle between incident ray and reflected ray is 120^(@) , what is the angle of incidence ?
