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The momentum of a photon of electromagne...

The momentum of a photon of electromagnetic radiation is `3.3xx10^(-29)` kg m/s . The frequency of radiation is
`[h=6.6xx10^(-34)Js]`

A

`2.5xx10^(15)` Hz

B

`1.5xx10^(13)` Hz

C

`6xx10^(13)` Hz

D

`5xx10^(15)` Hz

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The correct Answer is:
To find the frequency of the photon given its momentum and Planck's constant, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the relationship between momentum, frequency, and Planck's constant**: The momentum \( P \) of a photon can be expressed in terms of its frequency \( \nu \) and Planck's constant \( h \) as: \[ P = \frac{h \nu}{c} \] where \( c \) is the speed of light. 2. **Rearranging the formula to find frequency**: We can rearrange the formula to solve for frequency \( \nu \): \[ \nu = \frac{P c}{h} \] 3. **Substituting the known values**: We know: - \( P = 3.3 \times 10^{-29} \, \text{kg m/s} \) - \( c = 3 \times 10^8 \, \text{m/s} \) (speed of light) - \( h = 6.6 \times 10^{-34} \, \text{Js} \) (Planck's constant) Plugging these values into the equation for frequency: \[ \nu = \frac{(3.3 \times 10^{-29} \, \text{kg m/s}) \times (3 \times 10^8 \, \text{m/s})}{6.6 \times 10^{-34} \, \text{Js}} \] 4. **Calculating the numerator**: First, calculate the numerator: \[ 3.3 \times 10^{-29} \times 3 \times 10^8 = 9.9 \times 10^{-21} \] 5. **Calculating the frequency**: Now, divide the result by \( h \): \[ \nu = \frac{9.9 \times 10^{-21}}{6.6 \times 10^{-34}} = 1.5 \times 10^{13} \, \text{Hz} \] ### Final Answer: The frequency of the radiation is \( \nu = 1.5 \times 10^{13} \, \text{Hz} \). ---

To find the frequency of the photon given its momentum and Planck's constant, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the relationship between momentum, frequency, and Planck's constant**: The momentum \( P \) of a photon can be expressed in terms of its frequency \( \nu \) and Planck's constant \( h \) as: \[ P = \frac{h \nu}{c} ...
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MARVEL PUBLICATION-ELECTRONS AND PHOTONS -TEST YOUR GRASP - 17
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