Optics Answers

Describe young's double slit interference in detail and hencederive an expression for intensity of light at a point p on the screen making an angle q with the central axis.

the main scale of vernier has 10 divisions in a centimeter and 10 vernier scale divisions coincide with 9 main scale divisions.calculate1) pitch 2)L.c of vernier caliperse

what is the meaning of opaque object

The sun subtends an angle a half a degree at the pole of a concave mirror which has a radius of curvature of 15 m.Then the size(diameter) of the image of the sun formed by the concave mirror is :

a) 3.5 cm

b) 13.1 cm

c) 7.5 cm

d) 6.55 cm

an object is placed in front of a symmetrical convex lens of with refractive index 1.5 and radius of curvature 40 cm . the surface of the lens further away from the object is silvered.under auto collimation condition, the object distance is

to get a greater and clear image at what distance lens should be placed from the object

Light is a electromagnetic 'wave' then why it appears in straight line instead of appearing as a wave