The laws of reflection holds for__ a) plane mirrors. b) spherical mirrors.
c)both. d) None of them.

An electric current is flowing through the cord below. what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

Wavelength, frequency, and energy are related. what happens to a wave as it’s wavelength gets shorter?

Where should a carbon monoxide detector be mounted?