
Grade 11General Physics
a dimensionless quantity______(a)never has a unit(b)may have a unit(c)always has a unit(d)does not exist
a dimensionless quantity______
(a)never has a unit
(b)may have a unit
(c)always has a unit
(d)does not exist

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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