Optics Question 673
Question: An achromatic combination of lenses produces
[KCET 1993; JIPMER 1997]
Options:
A) Coloured images
B) Highly enlarged image
C) Images in black and white
D) Images unaffected by variation of refractive index with wavelength
Show Answer
Answer:
Correct Answer: D
Solution:
Since $ f\propto \frac{1}{\mu }\propto \lambda , $ so voilet colour is focused nearer to the lens.
