Physics Questions

Through which does light travel best?

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

An object is placed on the principal axis of a cortex lens of focal length 10 cm. If the distance of the object from the lens is 30 cm, what is the distance of the image formed?

Which of the following is an example of thermoplastics?

In which of the following situations is mechanical energy most likely to be conserved?

_________ is a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole.

Due to an acceleration of 4 m/s2 the velocity of a body increases from 10 m/s to 30 m/s in a certain period. Find the displacement (in m) of the body in that period.

In the equation of motion 2as = v2 - u2, s represents _________________.