Ray Optics and Optical Instruments - Online Test

Q1. Optical fibre communication uses the principle of
Answer : Option B
Explaination / Solution:
No Explaination.


Q2. For small angles Snell’s law becomes
Answer : Option C
Explaination / Solution:
No Explaination.


Q3. Lens maker’s formula is
Answer : Option D
Explaination / Solution:
No Explaination.


Q4. Thin lens approximation for a lens is
Answer : Option B
Explaination / Solution:
No Explaination.


Q5. The power P of a lens is given by the approximate formula
Answer : Option B
Explaination / Solution:
No Explaination.


Q6. Domestic power supply in India is
Answer : Option B
Explaination / Solution:
No Explaination.


Q7. If several thin lenses of focal length  … are in contact, the effective focal length is
Answer : Option D
Explaination / Solution:
No Explaination.


Q8. At the minimum deviation , the refracted ray inside the prism
Answer : Option B
Explaination / Solution:
No Explaination.


Q9. Dispersion is
Answer : Option A
Explaination / Solution:
No Explaination.


Q10. The bluish color predominates in a clear sky,
Answer : Option A
Explaination / Solution:
No Explaination.