spectra

light travels through the prism will ?

• slow down

• speed up

• stop

• reflected

what is the meaning of "infra" ?

• go up

• the same

• below

• beyond

types of electromagnetic wave beyond infrared and ultraviolet is ... ?

what is the colour that refracted the most ?

• indigo

• blue

• violet

• red

what is the colour that exists in the spectrum ( list all the color in sequence) ?

choose the right sentence

• all the color in the spectrum have the same frequency

• red has higher frequency than violet

• yellow has smaller frequency than green

frequency of gamma rays ?

• 10^-12m

• 10^-9m

• 10^-6m

• 10^-7m

one uses of radio waves ?

• mobile phone signals

• use in microwave

• use in remote control

• televison signals

is this statement is true or false :

"Violet has bigger wavelength than red"

• true

• false

speed of electromagnetic wave in vacuum ?

• 3 x 10⁸ m/s

• 4 x 10⁸ m/s

• 3 x 10⁹ m/s

• 4 x 10⁹ m/s