Define - real image.

Define - virtual image.

Show the difference a real image and a virtural image with the help of diagram .

Define a real number and state its important properties.

Explain with ray diagram the formation of magnified real image.Give one application of it.

An object placed in front of a concave mirror at a distance of x cm from the pole gives a 3 times magnified real image. If it is moved to a distance of (x+5) cm, the magnification of the image becomes 2. The focal length of the mirror is

Let N be the set of natural numbers. Define a real valued function f: N to n by f(x)=2x+1. Using this defination, complete the table given below,

Define Real Wage.

Define Real Wage.

Define Real wage.

Write the properties of real image?