Physics Questions

Two identical resistors of 20 ohm each are connected in parallel. This combination, in turn, is connected to a 10 ohm resister. The equivalent resistance of the combination will be

Consider a hypothetical planet whose mass and radius are both half that of Earth. If g is the acceleration due to gravity on the surface of Earth, the acceleration due to gravity on the planet will be

Why does a piece of cloth, which appears green in sunlight, appear black when it is viewed under red light?

Which of the following is NOT an example of potential energy?

According to Ohm's law, if current (I) increase and potential difference (V) remains constant, then

Mechanical energy is the sum of

During the free fall of the object, the decrease in potential energy, at any point in its path, appears as an equal amount of increase in _________________.

What of the given below devices converts chemical energy to electrical energy?