Physics Questions

Which of the following is a characteristic of an exothermic reaction?

What is the reason for formation of Mirage in desert?

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 ___.

If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is half of that of earth and radius is same as that of earth is _________________.

Find the potential energy gained by a body of mass 50 kg, if it is raised by 10m. (use g = 10 m/s2)

What is the duration of the world’s shortest X–ray laser has been successfully created by the scientists?

The force of friction between two surfaces will increase if:

Name the type of mirror used in the headlight of vehicles