If a magnifying glass has a power of 10.0 D, what is the magnification it produces when held 6.55 cm from an object?

The magnification of the magnifying glass is -2.9

Explanation:

The equation for power is given as:

where,

P = Power = 10 D

f = focal length

Putting values in above equation, we get:

           (Conversion factor: 1 m = 100 cm)

The equation for lens formula follows:

where,

v = image distance

u = Object distance = 6.55 cm

Putting values in above equation, we get:

Magnification (m) can be written as:

Putting values in above equation, we get:

Hence, the magnification of the magnifying glass is -2.9

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.