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Questions and Answers
What is the sign convention for the object distance (BO) in lens formula calculations?
What is the sign convention for the object distance (BO) in lens formula calculations?
- -u (correct)
- +v
- -v
- +u
Which type of lenses is the thin lens formula valid for?
Which type of lenses is the thin lens formula valid for?
- Both concave and convex lenses (correct)
- Convex lenses only
- Only concave lenses
- Double-convex lenses
What are the two foci of a double convex or concave lens?
What are the two foci of a double convex or concave lens?
- F1 and F'
- F1 and F2
- F and F2
- F and F' (correct)
Which is the first focal point in a double-convex or concave lens?
Which is the first focal point in a double-convex or concave lens?
In image formation by a lens, what happens to a ray of light passing through the first principal focus of a convex lens?
In image formation by a lens, what happens to a ray of light passing through the first principal focus of a convex lens?
What is the principle used to find the image of an object by a lens?
What is the principle used to find the image of an object by a lens?
What happens to a ray of light incident on a concave lens that appears to meet the principal axis at the second focus point?
What happens to a ray of light incident on a concave lens that appears to meet the principal axis at the second focus point?
What is the magnification (m) defined as for a lens?
What is the magnification (m) defined as for a lens?
In what cases is the magnification (m) positive for an image formed by a convex or concave lens?
In what cases is the magnification (m) positive for an image formed by a convex or concave lens?
What is the first step in calculating the refractive index of a liquid given a glass lens with a refractive index of 1.47 disappears in that liquid?
What is the first step in calculating the refractive index of a liquid given a glass lens with a refractive index of 1.47 disappears in that liquid?
What does it mean if the focal length (f) of a lens equals infinity?
What does it mean if the focal length (f) of a lens equals infinity?
How does a double-convex lens differ from a double-concave lens?
How does a double-convex lens differ from a double-concave lens?
What is the formula for the combined focal length of multiple thin lenses in contact?
What is the formula for the combined focal length of multiple thin lenses in contact?
What happens to the net power in a lens combination if there are both convex and concave lenses involved?
What happens to the net power in a lens combination if there are both convex and concave lenses involved?
What does the effective focal length of a double-convex lens depend on?
What does the effective focal length of a double-convex lens depend on?
In a compound microscope, how does the image formed by the first lens contribute to the second lens?
In a compound microscope, how does the image formed by the first lens contribute to the second lens?
What assumption is made about the optical centers of thin lenses in contact?
What assumption is made about the optical centers of thin lenses in contact?
How does a prism affect light passing through it?
How does a prism affect light passing through it?
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