Light Duality

The theory, on the basis of Photoelectric effect can be explained

• corpuscular theory

• electromagnetic theory

• wave theory

• quantum theory

Tags

NGSS.HS-PS4-3

An electron and a proton have same kinetic energy. Which of the two has a greater wavelength?

• electron

• proton

• both have same wavelength

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

electron volt is a unit of

• potential

• momentum

• energy

• charge

Tags

NGSS.HS-PS3-1

De Broglie equation

• relates the momentum of a mass to its wavelength

• relates the energy of a mass to its wavelength

• relates the frequency of a mass to its wavelength

• relates the work function of a mass to its wavelength

The de Broglie wave equation showed that the wavelength of any moving object is equal to

• m/hν
• h/mv
• v/mh
• hm/v

Which of the following is NOT the unit of energy

• MeV

• J

• eV

• V

Which of the following is TRUE about photon

• Particle with a negative charge

• Quantum of electromagnetic wave

• Particle with a positive charge

• electron produced when light is incident on a metal surface

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

The quantum of the energy E for radiation is

• inversely proportional to its wavelength

• proportional to its wavelength

• inversely proportional to its frequency

• proportional to its intensity

Tags

NGSS.HS-PS4-1

electron volt is a unit of

• potential

• momentum

• energy

• charge

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Electormagnetic radiation travels through a vacuum at a speed of 

• 186,000 m/s.
• 125 m/s
• 3.00 x 10⁸ m/s
• It depends on the wavelength

Tags

NGSS.HS-PS4-1