drawing board for computer

What is a Modem? - A modem (a modulator/demodulator) lets you connect your computer to a standard telephone line so that you can transmit and receive electronically transmitted data. It is the key that unlocks the world of the Internet and its World Wide Web, commercial online services, e..

Fix a sheet of white paper on a drawing board. Draw a line MM' on it and mark a point O at the center of the line and a normal ON on MM..

Place a rectangular glass slab on a white sheet of paper fixed on a drawing board..

In the beginning of this chapter, we have defined the force as an external agent, which changes the direction of motion, speed or shape of the body. All along we were discussing only about the forces acting at a point on a body. Let us now consider the forces acting over an area. Suppose you have t..

Fix a sheet of white paper on a drawing board. Draw a line MM' on it and mark a point O at the center of the line and a normal ON on MM'. Draw IO, the incident ray in such a way that is less than 90 0 . Place a strip of plane mirror vertically with it..

Melde's electrically maintained tuning fork consists of a large tuning fork (F) made of a ferromagnetic alloy, whose shank is rigidly clamped to a heavy rectangular wooden board (W). A bent strip of a metal is attached to one of the prongs of the fork and this serves as a spring. This met..

Fix a sheet of white paper on a drawing board. Draw a line MM' on it and mark a point O at the centre of the line and draw a normal ON on MM'. Draw IO, the incident ray in such a way that IOM is less than 90 o . Place a strip of plane mirror vertic..

Question: State the laws of reflection and verify them. Answer: Laws of reflection: 1) The incident ray, the reflected ray and the normal at the point of incidence lie in the same plane. 2) The angle of incidence is equal to the angle of reflection. Verification of the Laws of Reflecti..

Question: With the help of a diagram explain how light gets refracted when it passes through a rectangular glass slab. Answer: Place a rectangular glass slab on a white sheet of paper fixed on a drawing board. Trace the boundary ABCD of the glass slab. Remove the glass..

Verification of Snell's Law - Place a rectangular glass slab on a white sheet of paper fixed on a drawing board. Trace the boundary ABCD of the glass slab. Remove the glass slab and draw a normal N 1 N 2 at O. Draw a straight line IO inclined at an angle say 30 o ..