Saturday 9 June 2018

ASSIGNMENT 1


RAY OPTICS CLASS XI

Q1)Does critical angle depend on wavelength used?

Q2)Does a prism displace  or deviate an incident ray?
Q3)What are the factors on which light reflected from a surface depends?
Q4)A thin prism of 600 gives deviation of 300. what is the refractive index of the material of the prism?
Q5)For what angle of incidence the lateral shift produced by a parallel sided glass slab is maximum?
Q6)What will be the colour of the sky in the absence of atmosphere?

Q7)How deep will a 4m tank appear when seen in air due to optical illusion. Refractive index of water is 4/3.
Q8)Name the colour having the  ( i ) minimum speed  ( ii ) maximum speed through a prism.

Q9)Yellow light of wavelength 589nm is incident on a boundary separating air and glass . Find the speed , wavelength and frequency for ( i ) reflected light  ( ii ) refracted light . Refractive index of glass for yellow light is 1.5


Q10)Derive mirror formula for concave mirror forming virtual image.
Q11)The refractive index of glass is 1.5.  What is the time taken by light to travel 1m thickness of the glass ? the speed of light in vacuum is 3x 108 m/s .