1.Light is an electromagnetic wave. Which characteristic is common in all electromagnetic waves in a vacuum?
A.amplitude
B.frequency
C.speed
D.wavelenght

2.Which is NOT true about nature of light?
A.Light is an electromagnetic wave.
B.Light is a mixture of ROYGBIV colors of light.
C.Light is a form of energy that travels in space
D.Light has a constant speed of 3x10⁸ m/s in any medium.

3.Which electromagnetic wave is a microscope?
A.infrared radiation
B.gamma rays
C.visible light
D.ultraviolet light

4.When the red light is compare with violet light ____ in a vacuum.
A.both travel at the same speed
B.both have the same frequency
C.both have the same wavelenght
D.red light travels faster than violet light

5.____wave do not require a medium to travel in space like ___ wave.
A.electromagnetic; radio
B.electromagnetic; earthquake
C.mechanical; radio
D.mechanical; radio