Well, It depends what kind of image do they want. It would be most likely a convex lens/ mirror. Convex lenses make things bigger.
The explorer is used by the dentist to detect decay.
The ocular lens used for nearsightedness is known as a diverging lens. It is also known as a concave lens.
bioconvex lens
A convex lens.
? to protect the lens i assume.
Fresnel lens
A telescopic lens.
The type of lense is a convex lense
The thick lens equation is used in optics to calculate the focal length of a lens that is not thin, taking into account the thickness of the lens itself.
double convex
They Used a Convex Lens
The small magnifying lens used by jewelers and watchmakers is a loupe.