Physics Questions

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

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

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

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?

Electrons move around the nucleus in _______ motion.

During which of the following operating conditions of an automobile, carbon monoxide content in exhaust gas is maximum?

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. 

1 m/s equals ____________ km/hr