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4 years ago

What are plane mirrors ?

Physics

1 answer:

forsale [732]4 years ago

3 0

Explanation:

Mirrors consist of reflecting surfaces that reflect light.

Reflection is a phenomenon of light wave (but also of other types of waves) in which a ray of light hits a surface, and then it bounces back into the original medium at a certain angle.

The direction of the reflected ray is determined by the law of reflection:

The incident ray, the reflected ray and the normal to the surface all lie in the same plane
The angle of reflection is equal to the angle of incidence (where both angles are measured between the ray and the normal to the surface)

A plane mirror is a type of mirror consisting of a straight surface. As a result, light incident perpendicular to the surface is reflected back exactly in the opposite direction.

The image formed by a plane mirror is:

- The same size as the object

- Virtual (it is located behind the mirror)

- Laterally inverted

- Upright

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A single point charge is placed at the center of an imaginary cube that has 10 cm long edges. The electric flux out of one of th

12345 [234]

Answer:

Explanation:

<u>Given:</u>

Length of each side of the cube, $L=10\ cm$

The Elecric flux through one of the side of the cube is, $\phi =-1 kNm^2/C.$

The net flux through a closed surface is defined as the total charge that lie inside the closed surface divided by $\epsilon_0$

Since Flux is a scalar quantity. It can added to get total flux through the surface.

$\phi_{total}=\dfrac{Q_{in}}{\epsilon_0}\\6\times {-1}\times 10^3=\dfrac{Q_{in}}{\epsilon_0}\\\\Q_{in}=-6}\times 10^3\epsilon_0\\Q_{in}=-6}\times 10^3\times8.85\times 10^{-12}\\Q_{in}=-53.1\times10^{-9}\ C$

So the the charge at the centre is calculated.

5 0

3 years ago

How much is required to accelerate a 5kg mass at 20 m/s2

zhannawk [14.2K]

use F = ma

F : force m : mass a : acceleration

f = 5kg * 20 m/s2 = 100 N

5 0

3 years ago

A substance has life of 40 years. In how many years will the substance disintegrate to 1/8 of its initial size

tia_tia [17]

Answer:

5 years

Explanation:

$\frac{1}{8}(40)\\\\= 5$

8 0

2 years ago

Differences between tungsten and nichrome

d1i1m1o1n [39]

Answer:

Tungsten is made of tungsten while Nichrome is made of nickel chromium.

Nichrome is used in the elements of electric

devices.

Tungsten is used to make filament of bulbs.

Nichrome have high resistivity than tungsten.

Tungsten have high melting point than nichrome

Explanation:

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3 years ago

What is the average speed of a car that travelled 400 miles in 6 hours?

Reil [10]

Answer:

About 66 miles per hour

Explanation:

Based on the information given we can assume the car traveled the same number of miles every hour meaning all we need to do is divide.

400/6 ≈ 66 miles per hour

8 0

3 years ago

Read 2 more answers