DUAL NATURE OF RADIATION AND MATTER — Physics STD 12 Science — Question

Give explanation of linearly pofarized, unpolarized and plane polarized wave.

Distinguish between polarised and unpolarized light. Does the intensity of polarised light emitted by a Polaroid depend on its orientation? Explain briefly.
The vibrations in a beam of polarised light make an angle of 60° with the axis of the polaroid sheet. What percentage of light is transmitted through the sheet?

Suggest a method to produce a rainbow in your house.

When a capacitor is joined with a series LR circuit in series, then current flowing through the circuit increases. Explain, why?

Write down the basic properties of electric charge.

Which of the following two statements is more appropriate?

1. Two forces are added using triangle rule because force is a vector quantity.
2. Force is a vector quantity because two forces are added using triangle rule.

Write magnitude and direction of force acting on poles of bar magnet placed in a magnetic field.

The circuit arrangement given below shows that when an a.c. passes through the coil A, the current starts flowing in the coil B.

1. State the underlying principle involved.
2. Mention two factors on which the current produced in the coil B depends.