Hey , I am freaking out about my result as my p1 didn't go that well. So to get a fair idea about my practical marks im asking this. Please tell me how many marks deducted.
Q1) i took 3 oscillations and averaged it as the rule would become very slow.
-all my points were correct and trend etc too but my line of best fit wasn't , it passed through ogirin , how many marks am I gonna lose ?
Q2) I didn't repeat the readings / average in the thickness of the lenses (diameter , edge , thickness)
-I took vernier caliper reading to 3 decimal place like 4.000 cm as divisions had 0.5 in it aswell :s
-my focal length were in 40s and 20s (I didn't average in them too , just measured once, didn't repeat)
-my limitations were
)Two measurements not enough-->take more readings and compare the values of k
)stray light from surroundings--->perform experiment in a dark room
)hand shaking contineusly during experiment--->use a lens holder
)lens not perpendicular ----> set square
Q1) i took 3 oscillations and averaged it as the rule would become very slow.
-all my points were correct and trend etc too but my line of best fit wasn't , it passed through ogirin , how many marks am I gonna lose ?
Q2) I didn't repeat the readings / average in the thickness of the lenses (diameter , edge , thickness)
-I took vernier caliper reading to 3 decimal place like 4.000 cm as divisions had 0.5 in it aswell :s
-my focal length were in 40s and 20s (I didn't average in them too , just measured once, didn't repeat)
-my limitations were
)Two measurements not enough-->take more readings and compare the values of k
)stray light from surroundings--->perform experiment in a dark room
)hand shaking contineusly during experiment--->use a lens holder
)lens not perpendicular ----> set square