Allowed : One Equation Sheet (Handed out by TA)

Q4 Two media’s are side by side. The speed of light in #1 is c/1.5 and in #2 is c. (c is the speed of light in vacuum) A beam of light is incident from media #1 to media #2 at an angle of 30 deg (relative to the normal). What is the angle of the beam in media #2 relative to the normal?

Q8 In the double slit experiment the distance between the slits is 0.01 mm and the distance to the screen is 2 m. If the second maximum is a distance Y=6 cm from the central what is the wave length of the light used?

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