AIIMS 2004
- Exam
- AIIMS
- Year
- 2004
- Subject
- Physics
- Chapter
- Wave Optics
AIIMS 2004 · Physics · Wave Optics
Assertion : A red object appears dark in the yellow light. Reason :...
Assertion : A red object appears dark in the yellow light.
Reason : The red colour is scattered less.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion
- BIf both assertion and reason are true but reason is not the correct explanation of assertion
- CIf assertion is true but reason is false
- DIf both assertion and reason are false.
Correct answer
B. If both assertion and reason are true but reason is not the correct explanation of assertion
Step-by-step solution
A red object reflects red colour from a light falling on it. Thus when this object is viewed in yellow light then it absorbs all yellow light falling on it and appears dark. From Rayleigh's scattering is inversely proportional to . Red colour has largest wavelength; therefore this colour is scattered least as compared to other colours.