Which two of the following lenses L1, L2 and L3 will you select as

1.	Which two of the following lenses L1, L2 and L3 will you select as objective and eyepiece for constructing best possible (i) telescope, (ii) microscope ? Give reason to support your answer.LensPower (P)Aperture (A)L16D1 cmL23D8 cmL310D1 cm
Answer» (i) Telescope L₂ : objective L₃ : eyepiece Reason : Light gathering Power and magnifying power will be larger. (ii) Microscope L₃ : objective L₁: eyepiece Reason : Angular magnification is more for short focal length of objective and eyepiece.

Which two of the following lenses L1, L2 and L3 will you select as objective and eyepiece for constructing best possible (i) telescope, (ii) microscope ? Give reason to support your answer.LensPower (P)Aperture (A)L16D1 cmL23D8 cmL310D1 cm

Answer»

(i) Telescope

L₂ : objective

L₃ : eyepiece

Reason : Light gathering Power and magnifying power will be larger.

(ii) Microscope

L₃ : objective

L₁: eyepiece

Reason : Angular magnification is more for short focal length of objective and eyepiece.