Physics Questions

What is the heat generated (in J) in a heating element of resistance 1000 Ω when a current of 0.1 A passes through it for 25 seconds?

Calculate the pressure (in Pa) if a thrust of 800 N is applied to an area of 16 m2.

The boiling point of liquids vary as

Which of the following is false with reference to a photo-voltaic cell?

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 _________________.

In an optical fibre the signal is transmitted

_________________ is a measure of the moisture in air.

Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?