What magnification would a lens with a power of –4.00 D (typical for correcting myopia) produce if an object is held 25 cm away? -0.5 +0.5 -0.4 +0.4
Question
What magnification would a lens with a power of –4.00 D (typical for correcting myopia) produce if an object is held 25 cm away? -0.5 +0.5 -0.4 +0.4
Solution
The magnification (m) of a lens can be calculated using the formula:
m = -D * d
where: D is the power of the lens (in diopters), and d is the distance the object is held from the lens (in meters).
First, convert the distance from cm to m:
25 cm = 0.25 m
Then, substitute the given values into the formula:
m = -(-4.00 D) * 0.25 m = 1
So, the magnification produced by the lens would be +1. However, this option is not listed in your choices. Please check the question or the choices again.
Similar Questions
The magnification produced by a concave lens of power P is 1/2 for an object placed at a distance of 20cm from it. Calculate P.
Find the magnifying power of a compound microscope whose objective and eyepiece are of focal lengths 4.0 cm and 6.0 cm respectively and the object is placed 5.0 cm beyond the objective. Assume that the final image is formed at the least distance of distinct vision (25 cm)
What is the magnification of the resulting image when an object is twice as far from a convex lens as the focal length?A.0.5×B.1×C.2×D.4×
An object placed in front of a lens, forms a virtual image whose magnifications is 0.5. The focal length of the lens is 30cm. Calculate the object distance.(with sign)
he near point of a hypermetropic eye is at 75 cm from the eye. What is the power of the lens required to enable him to read clearly a book held at 25 cm from the eye?
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.