You want to calculate the photon energy for a wavelength of 550 nm and print the result in electronvolts (eV). Which code snippet correctly performs this using scipy.constants?

hard📝 Application Q8 of 15

SciPy - Constants and Special Functions

You want to calculate the photon energy for a wavelength of 550 nm and print the result in electronvolts (eV). Which code snippet correctly performs this using scipy.constants?

Afrom scipy.constants import c, planck, electron_volt wavelength = 550e-9 energy_joule = planck * c / wavelength energy_ev = energy_joule / electron_volt print(round(energy_ev, 3))

Bfrom scipy.constants import c, planck wavelength = 550 energy = planck * c / wavelength print(energy)

Cfrom scipy.constants import planck, electron_volt wavelength = 550e-9 energy_ev = planck / wavelength / electron_volt print(energy_ev)

Dfrom scipy.constants import c, planck, electron_volt wavelength = 550e-9 energy_ev = planck * c * wavelength * electron_volt print(energy_ev)

Step-by-Step Solution

Solution:

Step 1: Convert wavelength to meters
550 nm = 550e-9 meters, needed for correct calculation.
Step 2: Calculate energy in joules
Energy = planck * c / wavelength.
Step 3: Convert joules to electronvolts
Divide energy in joules by electron_volt constant.
Step 4: Verify code snippets
from scipy.constants import c, planck, electron_volt wavelength = 550e-9 energy_joule = planck * c / wavelength energy_ev = energy_joule / electron_volt print(round(energy_ev, 3)) correctly imports all constants, converts units, calculates energy, and prints rounded eV value.
Final Answer:
Option A -> Option A
Quick Check:
Convert joules to eV by dividing by electron_volt [OK]

Quick Trick: Energy (eV) = (planck * c / wavelength) / electron_volt [OK]

Common Mistakes:

MISTAKES

Not converting wavelength to meters
Multiplying instead of dividing by electron_volt
Omitting electron_volt conversion

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You want to calculate the photon energy for a wavelength of 550 nm and print the result in electronvolts (eV). Which code snippet correctly performs this using scipy.constants?

Step 1: Convert wavelength to meters

Step 2: Calculate energy in joules

Step 3: Convert joules to electronvolts

Step 4: Verify code snippets

Final Answer:

Quick Check:

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