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3 years ago

Which is true about a convex mirror?

Physics

1 answer:

kakasveta [241]3 years ago

8 0

Answer:

The answer is

A. Incident rays that are parallel to the central axis are dispersed but will be perceived as originating from a point on the near side of the mirror.

Explanation:

The images formed by a convex mirror is virtual, diminished and images are always formed between the Focal point and the pole of the mirror.

Convex mirrors are used as car driving mirrors because they form upright images and also give wider field of view (dispersed) , and notice that in the car driving mirrors there is a warning "objects appear closer than they are "

Which explains our answer, that images are perceived from a near side

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When reading the printout from a laser printer, you are actually looking at an array of tiny dots.

solniwko [45]

Answer:

The value is $y = 3.097 * 10^{-5} \ m$

Explanation:

From the question we are told that

The diameter of the pupil is $d_p = 4.2 \ mm = 4.2 *10^{-3} \ m$

The distance of the page from the eye $d = 29 \ cm = 0.29 \ m$

The wavelength is $\lambda = 500 \ nm = 500 *10^{-9} \ m$

The refractive index is $n_r = 1.36$

Generally the minimum separation of adjacent dots that can be resolved is mathematically represented as

$y = [ \frac{1.22 * \lambda }{d_p * n_r } ]* d$

$y = [ \frac{1.22 * 500 *10^{-9} }{4.2 *10^{-3} * 1.36} ]* 0.29$

$y = 3.097 * 10^{-5} \ m$

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3 years ago

How is a scientific law different than a scientific theory ?

OLga [1]

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4 years ago

A cat with a mass of 5.00 kg pushes on a 25.0 kg desk with a force of 50.0N to jump off. What is the force on the desk?

olya-2409 [2.1K]

Answer:

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u= ?

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u= 50/300=0.17N

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