Physics
(i) Define scattering.
(ii) The smoke from a fire looks white.
Which of the following statements is true?
- Molecules of the smoke are bigger than the wavelength of light.
- Molecules of the smoke are smaller than the wavelength of light.
Related Questions
Displacement distance graph of two sound waves A and B, travelling in a medium, are as shown in the diagram below.
Study the two sound waves and compare their:
(i) Amplitudes
(ii) Wavelengths
(i) State the relation between the critical angle and the absolute refractive index of a medium.
(ii) Which colour of light has a higher critical angle? Red light or Green light.
State the position of the object in front of a converging lens if:
(i) It produces a real and same size image of the object.
(ii) It is used as a magnifying lens.
The following diagram shows a 60°, 30°, 90° glass prism of critical angle 42°. Copy the diagram and complete the path of incident ray AB emerging out of the prism marking the angle of incidence on each surface.
