Which of the following best describes a ray?
Answer: any of a set of straight lines passing through one point.
Which best describes Sawyer’s error?
Which best describes Sawyer’s error? The wave fronts should be perpendicular to the direction in which the waves move.
Which pair shows the law of reflection?
The answer is A and C . Explanation: Reflection of object is reflected through the Normal (mirror) .
Which are characteristics of a ray when it hits a boundary?
Speed changes, but not direction. Either speed or direction can change. Direction changes, but not speed. Neither speed or direction can change.
Which best describes what happens to sunlight after it passes through the keyhole of a door?
Which best describes what happens to sunlight after it passes through the keyhole of a door? It converges into one particular shadow region. It spreads out into multiple shadow regions.
What best explains why she sees different colors when light strikes a CD?
The appropriate answer is ‘ The smooth surface of the CD causes wavelengths of light to scatter. The CD at this point acts somewhat like a prism splitting white light into the colors of the rainbow.
How large is the path difference?
The difference in distance traveled by the two waves is one full wavelength. That is, the path difference is 1 λ. When the path difference is one full wavelength, a crest meets a crest and constructive interference occurs.
What do the areas labeled xy and z represent?
What do the areas labeled X, Y, and Z represent? constructive interference in which waves cancel each other out. destructive interference in which waves cancel each other out. destructive interference in which waves strengthen each other.
Which best describes Arnold error?
Arnold makes a chart to summarize what happens when light interacts with matter and is reflected. Which best describes Arnold’s error? The law of reflection is not followed in scattering.
Which best compares concave and plane mirrors quizlet?
Which best compares concave and plane mirrors? Plane mirrors produce only virtual images, and concave mirrors produce real and virtual images. Plane mirrors produce only real images, and concave mirrors produce real and virtual images.
Which shows the correct magnification equation?
The magnification equation states that M = Hi/Ho = – Di/Do, where M is the magnification, Hi is the height of the image, Ho is the height of the object, Di is the distance from the lens to the image and Do is the distance of the object to the lens.
WHAT IS lens formula?
What is Lens Formula? In optics, the relationship between the distance of an image (v), the distance of an object (u), and the focal length (f) of the lens is given by the formula known as Lens formula. Lens formula is applicable for convex as well as concave lenses. These lenses have negligible thickness.
How do you calculate actual size?
Calculation of Actual Size: To calculate the actual size of a magnified specimen, the equation is simply rearranged: Actual Size = Image size (with ruler) ÷ Magnification.
Which lens has positive magnification?
Concave lens always forms virtual images, so, magnification produced by concave lens is always positive. A concave lens always forms the image smaller than the object, so \begin{align*}|m|<1\end{align*}.
What are the units of magnification?
Magnification has no unit. The reason is that it is a ratio of the measurement. It is the ratio of the size of an image to the size of an object. Therefore, it is a dimensionless constant.
What is magnification and its formula?
The formula of magnification represents the ratio of the height of the image to the ratio of the height of the object. Furthermore, the letter ‘m’ denotes the magnification of the object. Besides, its formula is: Magnification (m) = h / h’ Here, h is the height of the object and h’ is the height of the object.
What is the SI unit of mirror?
Answer: magnification of mirror is the increase in the image size produced by spherical mirrors with respect to the object size. Magnification has no SI unit because magnification is a ratio of two same quantity(metre/metre). Formula of magnification is m=h/h.By cartesian sign convention.
What is V and U in mirror formula?
It is also known as a mirror formula. In a spherical mirror: The distance between the object and the pole of the mirror is called the object distance(u). The distance between the image and the pole of the mirror is called Image distance(v).
What is the SI unit of focal length?
metre
What is SI unit of amplitude?
For one dimensional motion, the maximum displacement of an oscillatory system from its equilibrium position is called its amplitude. The SI unit of amplitude is the meter [m], but other length units may be used.