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10The power of a lens is measured in dioptre.
Convex lenses have negative power.
Concave lenses have negative power.
Power of a lens is the reciprocal of its focal length.
The focal length of a convex lens is taken as negative.
Thick lenses have a higher degree of refraction than thin lenses.
Thin lenses have higher refracting ability than thick lenses.
The curvature of glass lenses cannot change.
The curvature of the human eye lens can change depending on the object distance.
A lens with shorter focal length has lower power.
Percentage: 0%
The ability of a lens to converge or diverge light is called:
The SI unit of lens power is:
The power of a convex lens is:
The power of a concave lens is:
Lens power (P) is calculated using:
A lens with greater curvature has:
A convex lens of focal length 0.4 m has power:
The focal length of a concave lens is taken as:
In the human eye, the curvature of the lens can change when:
The thicker the lens, the:
The ability of a lens to converge or diverge light rays is called its ______.
The power of a lens is measured in ______ (D).
Convex lenses have ______ power.
Concave lenses have ______ power.
The power of a lens is the ______ of its focal length in meters.
The formula for lens power is ______ = 1/f.
The focal length of a convex lens is taken as ______.
The focal length of a concave lens is taken as ______.
A ______ lens with greater curvature converges or diverges light more than a thin lens.
The curvature of the convex lens in the human eye can ______ depending on nearby or distant objects.