4D പവർ ഉള്ള ഒരു ലെൻസിൻ്റെ ഫോക്കസ് ദൂരം കണക്കാക്കുക?
A0.25m
B0.35m
C0.45m
D0.56
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Related Questions:
The twinkling of star is due to:
A ray of light bends towards the normal while travelling from medium A to medam B. Which of the following statements is are correct?
- (A) Medium A is optically denser than medium B.
- (B) Speed of light is more in medium A than medium B.
- (C) Refractive index of medium B is more than refractive index of medium A.
The tank appears shallow than its actual depth due to?
The main reason for stars appear to be twinkle for us is :
The refractive index of a medium with respect to vacuum is