Question
What is image? Explain its types.

Answer

→If rays emanating from a point actually meet at another point after reflection and/or refraction, that point is called the image of the first point.
→There are two types of image:
(1) Real image : If the reflected rays actually converge at any point, then image is called the real image.
(2) Virtual image: If the reflected rays do not actually meet but appear to diverge from the point when produced backward then image is called virtual image.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

In the circuit (Fig. 4.23) the current is to be measured. What is the value of the current if the ammeter shown (a) is a galvanometer with a resistance $R_G=60.00 \Omega$; (b) is a galvanometer described in (a) but converted to an ammeter by a shunt resistance $r_s=0.02 \Omega$; (c) is an ideal ammeter with zero resistance?
Image
A nearsighted person cannot clearly see beyond 200cm. Find the power of the lens needed to see objects at large distances.
Using the curve for the binding energy per nucleon as a function of mass number A, state clearly how the release in energy in the processes of nuclear fission and nuclea fusion can be explained.
Write down the equation of displacement current and derive the Ampere$-$Maxwell's law.
Derive/obtain the equation of current in case of $AC$ voltage applied to a resistor and also draw the graph showing the phase difference between voltage and current.
The refractive index of a material is. What is the angle of refraction if the unpolarised light is incident on it at the polarising angle of the medium?
If a compressed spring is dissolved in acid, what happened to the elastic potential energy of the spring?
Electric charge is distributed in a small volume. The electric flux passing through a total charge enclosed by a spherical surface of radius 10 cm is 10 Vm . Then what will be the flux associated with a concentric sphere of radius 20 cm ?
What is the work function of metal? It depends on which factors?
List all the forces acting on:
  1. The pulley A.
  2. The boy and.
  3. The block C in figure.