Physics General Knowledge Questions: Physics GK Question for Competitive Exams

The G in 2G, 3G and 4G stands for Generation, and they refer to the 2nd, 3rd and 4th generation of wireless technology. The higher the generation the better, fast, and powerful will be the network.

Maximum fuel is consumed when the spaceship has to reach the greatest velocity. We know that the velocity required to escape the gravitational pull of Earth is more than the velocity required to escape the gravitational pull of the Moon.

The strongest permanent magnets in the world are neodymium (Nd) magnets, they are made from magnetic material made from an alloy of neodymium, iron and boron to form the Nd₂Fe₁₄B structure.

1. Mechanical energy is a combination of kinetic energy and potential energy.

2. Mechanical energy is defined as the sum of kinetic energy and potential energy used to do work on an object.

3. Mechanical energy is the form of energy that is related to the position and motion of an object.

1. Resistance of a wire depends on the length and cross-section of the wire.

1. French scientist Andre-Marie Ampère suggested that a magnet should also exert an equal and opposite force on a current-carrying conductor.

2. A current-carrying wire has its own magnetic field.

3. A current-carrying wire attracts a magnetic material like a normal bar magnet.

4. When the current is withdrawn or the switch is closed, there is no magnetic effect in that case.

5. This phenomenon was called the magnetic effect of current.

1. In which year did Albert Einstein predict a new state of matter, Bose-Einstein condensate (BEC) in 1924, based on the quantum formulation given by Indian physicist Satyendra Nath Bose?

2. Bose–Einstein condensate (BEC) is a state of matter in which a group of boson particles are in the same quantum state.

An electric bulb running on 18 V battery draws 3A of electric current. The resistance of the bulb will be 6 Ω.

We can do this by dividing the number of oscillations (30) by the total time taken (3 seconds): Frequency = 30 oscillations / 3 seconds = 10 Hz Therefore, the correct statement is B. Its time period is 0.1 s and frequency is 10 Hz

The majority of lenses have an infinite maximum focus distance (focus at infinity).