Double Concave & Double Convex Lens
Double Concave & Double Convex Lens
Spherical Double Convex and Double Concave Lenses highly
b) polished and well edged. Manufactured from plate Glass.
c) Lens Dia 50mm. Focal Length
d) a) 10 cm b) 15 cm c) 20 cm d) 25-100 cm
