Photons and Prefixes

Which one of the graphs best represents the relationship between the energy W of a photon and the frequency f of the radiation?

• A
• B
• C
• D

Which graph shows how photon energy varies with wavelength

• A
• B
• C
• D

A photon of light has an energy of 4.3 x 10⁻¹⁹J. What is its frequency?

• 1.4 x 10⁻¹⁵ Hz
• 6.5 x 10¹⁴ Hz
• 4.8 x 10¹⁴ Hz
• 2.9 x 10⁻⁵² Hz

A photon of light has an energy of 4.3 x 10⁻¹⁹J. What is its wavelength?

• 5.3 x 10⁹ m
• 2.6 x 10⁻⁹ m
• 8.4 x 10⁻¹⁹ m
• 4.6 x 10⁻⁹ m

The electronvolt is

• A small unit of energy
• A large unit of energy
• A large unit of charge
• A small unit of voltage

2 Joules is

• Less than 2 eV
• More than 2 eV
• Exactly 2 eV
• Impossible to say

2 eV is

• More than 2 Joules
• Exactly 2 joules
• Less than 2 Joules
• Impossible to say

Which model of the atom came due to the discovery of the electron

• Rutherford
• Dalton
• Thomson
• Bohr

Which model came about due to the fact that electrons in circular orbits should continually emit radiation

• Rutherford
• Dalton
• Thomson
• Bohr

Which prefix means x10^-9

• Milli
• Micro
• Femto
• Nano