TRUE or FALSE: When light travels obliquely from glass to air, it bends away from the normal.

Does the apparent depth of a tank of water change if viewed obliquely ? if so, does the apparent depth increase or decrease ?

The equation of refraction at a spherical surface is mu_2/v-mu_1/u=(mu_2-mu_1)/R Taking R=oo , show that this equation leads to the equation (Real depth)/(Apparent depth)=mu_2/mu_1 for fraction at a plane surface.

A small object is placed at the centre of the bottom of a cylindrical vessel of radius 3 cm and height 4 cm filled completely with water. Consider the ray leaving the vessel through a corner. Suppose this ray and the ray along the axis of the vessel are used to trace the image. Find the apparent depth of the image and the ratio of real depth to the apparent depth under the assumptions taken. Refractive index -of water = 1-33.

Asseration : Bending of the light rays from its original path at the interface of the two media is called 'Refraction. Reason : whenever the light travels from denser medium to rarer medium. It bends away from the normal .

What is Doppler effect? Derive the formula for the change in apparent frequency (i) Both source and listener move towards and away from each other. (ii) Both source and listaner move one behind the other source follows the listener and listener follows the source. (iii) Source at rest, listener moves towards and away from the source. (iv) Listener at rest, source moves towards and away from the listener.

A rod of weight W is supported by two parallel knife edges A and B and is in equilibrium in a horizontal position.The knives are at a distance d from each other The centre of mass of the rod is at distance x from A.The normal reaction on A is

An extended object is placed at a distance of 5.0 cm from a convex lens of focal length 8.0 cm. (a) Draw the ray diagram (to the scale) to locate the image and from this, measure the distance of the image from the lens, (b) Find the position of the image from the lens formula and see how close the drawing is to the correct result.

Figure shows planar loops of different shapes moving out of or into a region of a magnetic field which is directed normal to the plane of the loop away from the reader. Determine the direction of induced current in each loop using Lenz's law.