AS Physics Prac Query

[$!$RatJumper$!$]

ok... a question
in pracs right... when they ask fr errors and improvments in, sumtimes for parallax error the improvement is simply, "see at eye level".. but sumtimes they specifically mention do not accept at eye level and instead the improvement is use a mirror

why?

[$!$RatJumper$!$]

s10 qp35 question 2(d). why is the uncertainty value 0.5? isnt that a bit too high? in the other papers its usually 0.2

[ashish]

s10 qp35 question 2(d). why is the uncertainty value 0.5? isnt that a bit too high? in the other papers its usually 0.2

no, human reaction is usually between  0.3 - 1 sec

[Deadly_king]

s10 qp35 question 2(d). why is the uncertainty value 0.5? isnt that a bit too high? in the other papers its usually 0.2

I guess it's too late now.

But reaction time can vary depending on the experimenter. It would be in the range ashish stated though most of the time 0.2s is used.