a concave lens has focal length of 20cm at what distance should the object from the lens be placed so that it forms of 10 cm of lens also find the magnification of lence
Answers
Answered by
1
1/u=1/f - 1/v
f= -20cm. v= -10cm
1/-20 - 1/-10 = 1/-20 + 1/10
= -20+10÷ -200
1/u = -10 ÷ -200 = 1 ÷ 20
u = 20cm
m= -v/u
= - (-10) ÷ 20
= 10 ÷ 20
m = 1/2 = 0.5cm
f= -20cm. v= -10cm
1/-20 - 1/-10 = 1/-20 + 1/10
= -20+10÷ -200
1/u = -10 ÷ -200 = 1 ÷ 20
u = 20cm
m= -v/u
= - (-10) ÷ 20
= 10 ÷ 20
m = 1/2 = 0.5cm
shivamsharma786:
thanks
iski nature kaisi hogi
0.5cm
real and inverted or virtual and erect
i think real n inverted becoz its nature is not -ve
ok
one more question
write two uses of convex mirror one uses is side mirror of vehicles and second?
send me answer
Similar questions