Specific Heat Capacities of Gases — Physics STD 12 Science — Question

Two identical charged particles moving with the same speed enter a region of uniform magnetic field. If one of these enters normal to the field direction and the other enters along a direction at 30° with the field, what would be the ratio of their angular frequencies?

In long range transmission, why micro waves are better carrier than radio waves?

In a transistor:

1. The emitter has the least concentration of impurity.
2. The collector has the least concentration of impurity.
3. The base has the least concentration of impurity.
4. All the three regions have equal concentrations of impurity.

When an AC source is connected to a capacitor there is a steady-state current in the circuit. Does it mean thatthe charges jump from one plate to the other to complete the circuit?

Write the following radiations in ascending order in respect of their frequencies: X-rays, microwaves, UV rays and radio waves.

Can internal resistance of car batteries be determined with the help of Wheatstone bridge?

Define ionisation energy. What is its value for a hydrogen atom?

In a Young's doulbe-slit experiment, the slits are separated by 0.28 mm and the screen is placed 1.4 m away. The distance between the central bright fringe and the fourth bright fringe is measured to be 1.2 cm. Determine the wavelength of light used in the experiment.

Draw logic symbol of an OR gate and write its truth table.