Question Text
Question 1 :
A thin film of thickness i and index of refraction 1.33 coats a glass with index of refraction 1.50. What is the least thickness/that will strongly reflect light with wavelength 600 nm incident normally?
Question 2 :
If an object is placed at '$C$' of a concave mirror, the position of the image is ______
Question 3 :
According to laws of refraction, refraction of light at the boundary between two different regions follow:
Question 5 :
During refraction through a glass block, the angle of refraction _______.
Question 6 :
A student obtained a sharp inverted image of a distant tree on a screen placed in front of the concave mirror. He then removed the screen and tried to look into the mirror. He would now see:
Question 7 :
Where should the object be placed in front of a concave mirror so that the image formed is of the same size as the object?
Question 8 :
State whether the following statement is True or False.A concave mirror always forms a real image
Question 10 :
State whether true or falseA convex mirror is used for obtaining a real and magnified image.
Question 11 :
Name the prism required for obtaining the spectrum of infra red radiation<br/>
Question 12 :
Why are red coloured lights are used in traffic signals to stop the vehicles?
Question 13 :
In context of scatteringFine particles : ____ wavelength : : large particles : _____ wavelength
Question 14 :
Intensity of light ray in a directionafter scattering by small particles (smaller than wavelength):
Question 15 :
Intensity of light ray in a directionafter scattering by small particles (smaller than wavelength):