Question

1. On increasing the time in which a certain amount of work is done by a body, the power _____ (increases / decreases).

2. On increasing the velocity of a body by three times, the kinetic energy of the body

increases by ____ times.

3. Visible spectrum is a result of _____ of white light.

4. When an arrow leaves a stretched bow, the kinetic energy is converted into elastic

potential energy. True or False ?

5. Light rays incident on a concave mirror parallel to the principal axis passes through ____.

Answer 1

Answer:

decrease

I don't know all the answers