1) A lighted candle is placed 36?cm in front of a converging lens of focal lengt

Question

1) A lighted candle is placed 36?cm in front of a converging lens of focal length 13cm , which in turn is 56?cm in front of another converging lens of focal length17cm

Part A

Calculate the image distance of the final image relative the second lens. Follow the sign conventions.

Express your answer to two significant figures and include the appropriate units.

Part B

Calculate the magnification of the final image. Follow the sign conventions.

Express your answer using two significant figures.

2)

A planoconvex lens (n = 1.55) has a focal length of 18.3cm . What is the radius of the convex surface?

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

left lens

1/36 + 1/S1' = 1/13

S1 ' = 20.35 cm

S2 = 56-20.35 = 35.65 cm

1/S2 +1/S2' = 1/F2

(1/35.65) + 1/S2' = (1/17)
S2'= + 33.33 cm

m = m1*m2 = (-S1'/S1)*(-S2'/S2) = (-20.35/36)*(-33.33/35.65) = 0.53

B) 1/F = (n-1)*1/R

R = (n-1)*F = (1.55-1)*18.3 = 10.07 cm

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.