Physics Questions

 During the night, the direction of the wind would be from the __________________.

For which one of the following, 'Diodes' are generally used for?

Which of the following device is best suited for measuring the temperature inside metallurgical furnaces?

1 m/s equals ____________ km/hr

Electrons move around the nucleus in _______ motion.

A Sonar of a ship sends sounds waves of speed 1000 m/s. These waves are reflected back by the ocean floor in 2 seconds. Find the depth (in m) of theocean floor. 

When a number of resistors are connected in series in a circuit, the value of current:

Find the power of a convex lens if the image formed is at a distance of 20 cm from the lens when the object is placed on the other side of the lens at 25 cm from the optical centre?