question_subject:
Science
question_exam:
NDA-I
stats:
0,15,13,5,15,3,5
keywords:
{'wavelength increases': [0, 0, 0, 1], 'wavelength': [0, 0, 3, 3], 'frequency increases': [0, 0, 0, 1], 'frequency': [0, 0, 1, 3], 'light': [16, 4, 34, 62], 'medium': [1, 0, 1, 11], 'ray': [2, 0, 5, 15]}