Q. Pick out the statement which is not true
A) $IR$ radiations are used for long distance photography
B) $IR$ radiations arise due to inner electron transitions in atoms
C) $IR$ radiations are detected by using a bolometer
D) Sun is the natural source of $IR$ radiation
Explanation
The correct answer is Option B: $IR$ radiations arise due to inner electron transitions in atoms.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.