All categories

3 years ago

According to the law of reflection, if the angle of incidence of an incoming ray

Mathematics

2 answers:

viktelen [127]3 years ago

5 0

Answer:

B. 46°

Step-by-step explanation:

$\underline{ \bf{LAWS \: OF \: REFLECTION}}$

Angle of reflection (angle between reflected ray and the normal to the reflecting surface) equals to the angle of incidence (angle between incident ray and normal).

$\boxed{\bf{\angle i = \angle r}}$

The incident ray, reflected ray lie in the same plane with normal to the reflecting surface.

Natalija [7]3 years ago

4 0

Answer:

The answer is the option B, which is: 46 degrees.

The explanation for this problem is shown below:

1. According to the Law of reflection, the angle of incidence is equal to the angle of reflection.

2. Therefore, if Ф1 is the angle of incidence and Ф2 is the angle of reflection, you have:

Ф1 = 46 degrees

Ф1 = Ф2

Ф2 = 46 degrees

So, the answer is the option mentioned before.

You might be interested in

A pote that is 3.5 m tall casts a shadow that is 1.08 m long same time, a nearby building casts a shadow that is 35.5 m long How

meriva

Answer:

I ain't never seen 2 pretty bestfriends

Step-by-step explanation:

8 0

2 years ago

Carol is going to make a wooden pyramid and then paint it. She drew the net of a square pyramid as shown below to help her plan

rodikova [14]

The given pyramid's total surface area is 3. 24.0 square feet.

Step-by-step explanation:

Step 1:

To calculate the surface area of the given figure, we need to find the surface areas of the different shapes in the figure.

There are 3 triangles and 1 square in the figure.

Step 2:

All the triangles are similar.

The surface area of a triangle = $\frac{1}{2} (baselength)(height).$

The similar triangles have a base length of 3 feet and a height of 2.5 feet.

The surface area of 1 similar triangle = $\frac{1}{2} (3)(2.5)= 3.75$ square feet.

The surface area for all the similar triangles = $3.75 (4) = 15$ square feet.

Step 3:

The surface area of a square is the square of its side length. The square has a side length of 3 feet.

The surface area of the square = $a^{2} = 3^{2} =9$ square feet.

Step 4:

To calculate the total surface area we sum up all the individual surface area.

The total surface area = $15 + 9 = 24$ square feet which is the third option.

3 0

3 years ago

What is the coefficient of x2 in the expansion of (x + 2)3?

Vinvika [58]

I think 6 is the answer. Hopefully I answered your question

4 0

3 years ago

This is characterized by the symbol <, and is always read from left to right. Example: The phrase Cindy's wages were ______ $

Licemer1 [7]

The term is less than. Think about it this way next time, the mouth is open to the bigger number because it wants to eat the bigger number. So the number facing the tail is always less than.

3 0

3 years ago

Read 2 more answers

Find the product. Write your answer in<br> exponential form.<br> 6^-4•6^-9

Karolina [17]

Answer:

6^-13

Step-by-step explanation:

The rule for multiplying numbers with the same base but different exponents is a^b*a^c=a^(b+c), so in this case we have 6^(-4+(-9)) which is 6^-13

Hope this helped!

6 0

3 years ago