Q: 133 (IAS/2009)
question_subject:
Science
question_exam:
IAS
stats:
0,45,58,45,7,46,5
keywords:
{'highest energy': [0, 0, 2, 0], 'blue light': [1, 0, 4, 2], 'yellow light': [0, 0, 1, 2], 'green light': [1, 0, 0, 0], 'red light': [0, 0, 2, 0]}
The energy of light is determined by its frequency, and the colors of light are differentiated by their frequencies in the visible light spectrum. Blue light has a higher frequency (and thus, higher energy) as compared to green, red, and yellow.
Option 2, Green light, has less energy than blue light as it has a lower frequency. Option 3, Red light, has the least energy among all these options because red light has the lowest frequency in the visible light spectrum. Option 4, Yellow light, is somewhere in between, having less energy than blue and more than red light.
So, the highest energy is carried by the blue light, making Option 1 the correct answer.