You want to calculate the energy of a photon with frequency 5x1014 Hz using Planck's constant from scipy.constants. Which code snippet correctly computes this energy?
hard📝 Application Q15 of 15
SciPy - Constants and Special Functions
You want to calculate the energy of a photon with frequency 5x1014 Hz using Planck's constant from scipy.constants. Which code snippet correctly computes this energy?
Afrom scipy.constants import h
energy = h * 5e14
print(energy)
Bimport scipy.constants as sc
energy = sc.Plancks_constant * 5e14
print(energy)
Cfrom scipy.constants import Planck
energy = Planck * 5e14
print(energy)
Dimport scipy.constants
energy = scipy.constants.H * 5e14
print(energy)
Step-by-Step Solution
Solution:
Step 1: Identify correct constant name
Planck's constant is named h in scipy.constants. from scipy.constants import h
energy = h * 5e14
print(energy) uses h. Others use invalid names: A H, B Plancks_constant, C Planck.
Step 2: Check import and usage
from scipy.constants import h
energy = h * 5e14
print(energy) imports h directly and multiplies by frequency correctly. Others cause AttributeError or NameError.
Final Answer:
from scipy.constants import h
energy = h * 5e14
print(energy) -> Option A
Quick Check:
Planck's constant = h [OK]
Quick Trick:Planck's constant is 'h' in scipy.constants [OK]
Common Mistakes:
MISTAKES
Using wrong constant names like 'Plancks_constant' or 'Planck'
Not importing the constant correctly
Confusing variable names
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