Suppose that the electrons in an atom have 0.1eV of energy. In these units, Planck's constant is about 4×10

(A) 4×10^{15}Hz. --
(B) 0.1 Hz.

(C) 2.5×10^{15}Hz.
(D) 2.5×10^{13}Hz.

Questions --- What this question is about

116.1

Suppose that the electrons in an atom have 0.1eV of energy. In these units, Planck's constant is about 4×10

(A) 4×10^{15}Hz. -- No.

Solve *E=hf* for *f*.

Questions --- What this question is about

116.1

Suppose that the electrons in an atom have 0.1eV of energy. In these units, Planck's constant is about 4×10

(B) 0.1 Hz. -- No.

Solve *E=hf* for *f*.

Questions --- What this question is about

116.1

Suppose that the electrons in an atom have 0.1eV of energy. In these units, Planck's constant is about 4×10

(C) 2.5×10^{15}Hz. -- No

Notice that *E = 10 ^{-1}*eV

Questions --- What this question is about

116.1

Suppose that the electrons in an atom have 0.1eV of energy. In these units, Planck's constant is about 4×10

(D) 2.5×10^{13}Hz. -- Yes.
*E=hf*, so *f = E/h*

or f = (10^{-1}eV)/(4×10^{-15}eVs) = ¼×10^{14}s^{-1}

Questions --- What this question is about

116.1