Domestic power supply in India is 230 V 50 Hz
18) Domestic power supply in India is
Answer is:
230 V 50 Hz
Explanation:
Related Optics MCQ with Answers
19) If several thin lenses of focal length?f1,f2,f3, ? are in contact, the effective focal length is
Answer is:
1/f=1/f1 + 1/f2 + 1/f3 +?
Explanation:
harmonic mean of all focal length
Answer is:
becomes parallel to its base.
Explanation:
At the minimum deviation?D, the refracted ray inside the prism becomes parallel to its base.
Answer is:
The phenomenon of splitting of light into its component colours
Explanation:
colors are often observed as?light?passes through a triangular prism. Upon passage through the prism, the white?light?is separated into its component colors - red, orange, yellow, green, blue and violet. The separation of visible?light?into its different colors is known as?dispersion.
Answer is:
Since blue has a shorter wavelength than red and is scattered much more strongly
Explanation:
The bluish color predominates in a clear sky,Since blue has a shorter wavelength than red and is scattered much more strongly