The frequency of a photon having energy 100 e V is ( Take h = 6.62 × 10 - 34 J s; 1 e V = 1.6 × 10 - 19 J )

Question

The frequency of a photon having energy 100 e V is ( Take h = 6.62 × 10 - 34 J s; 1 e V = 1.6 × 10 - 19 J ) (A)  2.417 × 10 - 16 Hz (B)  2.417 × 10 16 Hz (C)  2.417 × 1017 Hz (D)  10.54 × 1017 Hz

Tardigrade Admin · Accepted Answer

Given, E = 100 eV = 100 × 1.6 × 10 - 19 J and h = 6.662 × 10 - 34 Js E = hv or v = ( e / h ) = ( 100 × 1.6 × 10 - 19 / 6.662 × 10 - 34) = 0.24 × 10 17 = 2.417 × 10 16 Hz

Q. The frequency of a photon having energy 100 e V is
( Take h = $6.62 \times 1 0^{- 34} J s; 1 e V = 1.6 \times 1 0^{- 19} J)$

$2.417 \times 1 0^{- 16}$ Hz

$2.417 \times 1 0^{16}$ Hz

$2.417 \times 1 0^{17}$ Hz

$10.54 \times 1 0^{17}$ Hz

Given, E = 100 eV = 100 $\times 1.6 \times 1 0^{- 19}$ J
and $h = 6.662 \times 1 0^{- 34} J s$
$E = h v$
or $v = \frac{e}{h} = \frac{100 \times 1.6 \times 1 0 ^{- 19}}{6.662 \times 1 0 ^{- 34}} = 0.24 \times 1 0^{17}$
= $2.417 \times 1 0^{16}$ Hz

Q. The frequency of a photon having energy 100 e V is ( Take h = 6.62×10−34Js;1eV=1.6×10−19J)

2.417×10−16 Hz

2.417×1016 Hz

2.417×1017 Hz

10.54×1017 Hz