AQA A Level Physics 3.2.2.3 Energy levels and photon emission

Which observation supports the theory that electrons exist in discrete energy levels?

• Photoelectric effect

• Radioactive decay

• Emission and absorption spectra

• Electromagnetic spectrum

Which colour has the LONGEST wavelength?

• Blue

• Green

• Red

• Yellow

• Violet

Which colour has the SHORTEST wavelength?

• Blue

• Green

• Red

• Yellow

• Violet

Which colour has the SMALLEST frequency?

• Blue

• Green

• Red

• Yellow

• Violet

Which colour has the HIGHEST frequency?

• Blue

• Green

• Red

• Yellow

• Violet

Which colour has the LOWEST energy?

• Blue

• Green

• Red

• Yellow

• Violet

Which colour has the HIGHEST energy?

• Blue

• Green

• Red

• Yellow

• Violet

As frequency increases, energy...

• increases

• decreases

As wavelength increases, energy...

• increases

• decreases

Which light has the HIGHEST energy?

• UV

• Visible light

• Infrared

• Radio

• Gamma rays