A CYLINDRICAL GLASS ROD OF RADIUS 0.1 m AND REFRACTIVE INDEX 1.732 LIES ON A HORIZONTAL PLANE MIRROR . A HORIZONTAL RAY OF LIGHT MOVING PERPENDICULAR TO THE AXIS OF THE ROD IS INCIDENT ON IT . AT WHAT HEIGHT FROM THE MIRROR SHOULD THE RAY BE INCIDENT SO THAT IT LEAVES THE ROD AT A HEIGHT OF 0.1 m above the plane mirror.

An oscillator consists of a block of mass 512 g connected to a spring. When set into oscillation with amplitude 34.7 cm, it is observed to repeat its motion every 0.484 s. Find (a) the period, (b) the frequency, (c) the angular frequency, (d) the force constant, (e) the maximum speed, and ( f ) the maximum force exerted on the block.

A PLANE TRANSMISSION GRATING HAS 45000 LINES. DETERMINE ITS RESOLVING POWER IN THE SECOND ORDER FOR WAVELENGTH OF 5000A.

A PLANE TRANSMISSION GRATING HAS 45000 LINES. DETERMINE ITS RESOLVING POWER IN THE SECOND ORDER FOR WAVELENGTH OF 5000A.

If V-numer of a multi mode fiber is 3. Calculate the no.of modes if it is step index and graded index fiber multimode fiber (rounded off)?

What is the difference between angular position and angular fringe width... I always get confused .