light quiz

Of the following waves, which has the shortest wavelength?

• radio

• blue

• infrared

• UV

Of the following waves, which has the least energy?

• microwave

• infrared

• green

• X-ray

Of the following waves, which has the highest frequency?

• radio

• micro

• infrared

• visible

Which type of wave is used for transmitting music and television signals?

• microwave

• radio

• infrared wave

• ultraviolet wave

Heat is associated with which type of EM wave?

• ultraviolet

• visible

• red

• infrared

Which type of wave can be used to treat cancer?

• X-ray

• visible

• gamma

• ultra violet

Which type of wave is most dangerous?

• UV

• gamma

• X-ray

• infrared

Exposure to which type of wave causes skin cancer and cataracts?

• infrared

• UV

• X-ray

• gamma ray

Microwaves can be used for all of the following except...

• heating food

• transmitting phone calls

• WiFi signals

• Doppler radar weather forcasting

Which of the following is the Law of Reflection?

• the angle of reflection is greater than the angle of incidence

• the angle of reflection is less than the angle of incidence

• the angle of reflection is equal to the angle of incidence

• the angle of reflection depends on the surface material