Planck's radiation formula is given by

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Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

The minimum energy required by a bound electron to be liberated from the metal when it is illuminated by light of suitable wavelength is called

• Stopping potential

• threshold frequency

• work function

• maximum kinetic energy

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NGSS.HS-PS4-3

If a proton and an electron have same energy, then which one is correct?

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NGSS.HS-PS3-1

The energy of a particle trapped inside an infinite deep potential well is 8 eV. If the width of the well is halved then it's energy becomes

• 2 eV

• 4 eV

• 16 eV

• 32 eV

Tags

NGSS.HS-PS4-1

Which model of the atom said that electrons circle the nucleus in orbits of a fixed radius?

• Bohr model
• Quantum mechanical model
• Not true of either model
• Both Bohr and Quantum mechanical model

Name the scientist who created an equation to treat the electron as a wave

• Planck

• Heisenberg

• de Broglie

• Schrodinger

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NGSS.HS-PS4-3

Who is responsible for the quantization of energy?

• Planck

• Einstein

• Compton

• de Broglie

• Heisenberg

Why do we see colors when we look at neon signs?

• Electrons are jumping from an excited state to a normal state and giving off energy

• Electrons are jumping from a normal state to an excited state and absorbing energy

• Electrons are jumping from an excited state to a normal state and absorbing energy

• Electrons are jumping from a normal state to an excited state and giving off energy

Tags

NGSS.HS-PS1-2

Each orbital can hold ____ electrons

• 5

• 4

• 8

• 2

Which of the following is correct related to black body radiation curve?

• Plank's formula could explain the radiation curve in all frequency range.

• Wien's formula for radiation energy distillation well explains the distribution of energy in high frequency range.

• Rayleigh-Jean's formula well matches with the radiation curve in low frequency range.

• All the above