All categories

3 years ago

Define the reflection with diagram

Physics

1 answer:

LekaFEV [45]3 years ago

6 0

Answer:

The incident light ray which lands upon the surface is said to be reflected off the surface. The ray that bounces back is called the reflected ray. If a perpendicular were to be drawn on reflecting surface, it would be called normal. The figure below shows the reflection of an incident beam on a plane mirror.

Explanation:

You might be interested in

Assume two identical sinusoidal waves are moving through the same medium in the same direction. Under what condition will the am

weqwewe [10]

The correct options are B and C

Let us assume the amplitude of the two sinusoidal waves be A1 and A2

As it is mentioned that the waves are identical, therefore A1=A2= a

The resultant wave of any two waves is given by the formula:

Resultant wave= $\sqrt{A1^2+A2^2+2A1A2cos\alpha }$

where A1 and A2 are amplitudes of waves 1 and 2 and $\alpha$ is the angle between the waves

Now as per the formula, it is the the factor 2cos $\alpha$ that will decide that amplitude is greater than original or not

Hence we know that maximum value of cos $\alpha$ is when $\alpha$ is 0 degrees

Now it is known that value of cos $\alpha$ varies from 1 to 0 for o degrees to π/2

and the value varies from 0 to -1 for angles π/2 to π

Case 1: when $\alpha$ =0 degree

Resultant wave R = $\sqrt{A1^2+A2^2+2cos0A1A2}= \sqrt{2A^2+2A^2}=\sqrt{4A^2} =2A$

Case 2: When $\alpha$ is less than 90

let us consider $\alpha = 45 degree$

Resultant wave R =

$\sqrt{A1^2+A2^2+2cos45A1A2}= \sqrt{2A^2+2A^2/2}=\sqrt{3A^2} =\sqrt{3} A$

case 3:

When $\alpha$ is less than 120

$\sqrt{A1^2+A2^2+2cos120A1A2}= \sqrt{2A^2-2A^2/2}=A$

case 4: when $\alpha$ is less than 180 degrees

the value will be 0

Hence only option b and d are correct

For further reference:

brainly.com/question/14286615?referrer=searchResults

#SPJ4

5 0

2 years ago

A dipole moment is placed in a uniform electric field oriented along an unknown direction. The maximum torque applied to the dip

g100num [7]

Answer:

θ = 180

Explanation:

When an electric dipole is placed in an electric field, there is a torque due to the electric force

τ = p x E

by rotating the dipole there is a change in potential energy

ΔU = ∫ τ dθ

ΔU = p E (cos θ₂ - cos θ₁)

when the dipole starts from an angle to the equilibrium position for θ = 0

ΔU = pE (cos θ - cos 0)

cos θ = 1 + DU / pE)

let's apply this expression to our case, the change in potential energy is ΔU = -0.2J

let's calculate

cos θ = 1 -0.2 / 0.1

cos θ = -1

θ = 180

6 0

3 years ago

How is pressure and density related?

enyata [817]

Answer:

Density is directly proportional to pressure

Explanation:

As pressure increases (with constant temperature), density also increases.

Density is inversely proportional to temperature.

5 0

3 years ago

2. If the initial speed of the baseball in question 1 is v. = 0.0 m/s, what will its speed be when it leaves the pitcher's

White raven [17]

Answer:

Object A has 3 times the mass of object B.

Explanation:

Have a nice rest of your day :)

6 0

3 years ago

Students have been assigned to write reports on cell organelles. Eric’s report is about the organelle that supports and gives st

mojhsa [17]

Eric is writing about the cell wall.
Chloroplast is for photosynthesis.
Mitochondria releases energy from respiration.
Nucleus controls the activities of the cell.
But the cell wall supports and gives structure to the cell.

4 0

3 years ago

Read 2 more answers

Define the reflection with diagram​

Define the reflection with diagram