3 years ago

What type of device forms images by bending light?

Physics

1 answer:

ArbitrLikvidat [17]3 years ago

6 0

B. Any lens

Explanation:

A lens is any type of device that forms images by bending light rays that passes through them. The image of the object is formed on a screen.

Mirrors only reflect light.

When light is bent as it crosses the boundary between two surfaces, we say it is refracted.
Light is refracted when light moves between two medium of different densities.
When light bounces off a surface, it is reflected.
Mirrors forms images by reflection of light
Lenses forms images by refraction of light
Light goes through a lens but it is reflected on mirror
Both mirrors and lenses can be a concave or convex device

learn more:

Refraction brainly.com/question/12370040

#learnwithBrainly

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A metal rod is 25.000 cm long at 25.0 degrees Celsius. When heated to 102.0

ser-zykov [4K]

Answer:

The coefficient of linear expansion $\alpha =2.8\times 10^-5$ \°C

Explanation:

Given initial temperature $t_1=25$ °C

And final temperature $t_2=102$ °C

Initial length $l_1=25.000\ cm$

Final length $l_2=25.054\ cm$

We have to find the coefficient of linear expansion

The coefficient of linear expansion is defined as the change in length per unit original length divide by the change in temperature.

$l_2=l_1(1+\alpha (t_2-t_1))\\l_2-l_1=\alpha l_1(t_2-t_1)\\25.054-25.000=25.000(\alpha (102-25))\\0.054=\alpha\times 25(77)\\0.054=\alpha\times1925\\\alpha =\frac{0.054}{1925}=0.000028\C\\\alpha =2.8\times 10^-5$