Which of the following devices transforms light energy to electrical energy?

The property of a body to remain at rest or to continue in a uniform motion, in a straight line is called

A lamp rated $100 W$, $240 V$ is lit for $5$ hours. Calculate the cost of lighting the lamp if $1 kWh$ of electrical energy cost $₦5$.

Which of the following statements about gamma radiation is correct? Gamma radiation can