The answer is D.
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Answer:
d.-10.3m
Explanation:
Note for short sightedness the focal length is negative
Let do be object distance=10m
And di= image distance=-300m
Using lens formula
F=do*di/do-di= 10*300/10-300=-10.3m
Sunlight is broken into 3 concepts visible light, ultraviolet light, and infrared radiation