Physics Questions

Which among the following is not an environment friendly mode of producing electricity?

Mechanical energy is the sum of

The diameter of the reflecting surface of a spherical mirror is called a/an

A source maintains a current I in a resistor of resistor of resistance R. If V is the potential difference across the resistor. The electrical energy dissipated in the resistor in time is given _____

The second equation of motion gives the relation between

Two identical resistors, each of 10 ohm, are connected in parallel. This combination, in turn, is connected to a third resistor of 10 ohm. The equivalent resistance of the combination is ___.

Consider a planet whose mass and radius are both twice the mass and radius of Earth. The acceleration due to gravity on the surface of the planet is 'n' times that on Earth. The value of n is:

1 pascal equals 1 ________________.