
Grade 11General Physics
In F=A cos K1x + B cos K2t, where x is the distance and t is the time , the dimensional formula of K1/K2 is???
In F=A cos K1x + B cos K2t, where x is the distance and t is the time , the dimensional formula of K1/K2 is???

In viewing through a magnifying glass, one usually positions one's eyes very close to the lens. Does angular magnification change if the eye is moved back?
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