All categories

3 years ago

PLEASE HELP!!!! Define constructive interference.

1 answer:

8 0

Constructive interference is a phenomenon in optics where the crest or troughs of two or more waves intersect each other. This leads to increase in the intensity of the output wave.

<u>Explanation:</u>

When two or more waves emitting from different sources travel together, they tend to intersect at some point. So the waves can intersect either at both the crusts position and both the waves in trough position. Thus if the intersecting points of the superposing waves are same, then it will lead to constructive interference leading to formation of bright light.

But if the intersecting points of the superposing waves are different, for example the crust of one wave is intersecting with trough of other wave, then it will lead to destructive interference. The output of the destructive interference is a dark spot in those regions.

Thus, constructive interference increases the amplitude of the superimposing waves as they add up the intensities of crusts of all intersecting points or troughs of all intersecting points.

You might be interested in

The total pressure inside a 1.43 L cylinder at 28C is 1.03 atm. If the temperatures drops to -35C, and the volume remains the sa

Art [367]

Answer:

0.81452 atm

Explanation:

$P_1$ = Initial pressure = 1.43 L

$V_1=V_2$ = Volume

$T_1$ = Initial temperature = (28+273.15) K

$T_2$ = Final temperature = (-35+273.15) K

$P_2$ = Final pressure

From the ideal gas law we have

$\dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}\\\Rightarrow P_2=\dfrac{P_1V_1T_2}{T_2V_2}\\\Rightarrow P_2=\dfrac{1.03\times 1.43\times (273.15-35)}{(273.15+28)1.43}\\\Rightarrow P_2=0.81452\ atm$

The pressure in the cylinder is 0.81452 atm

8 0

3 years ago

What is the relationship between potential and kinetic energy in chemical reactions?

astraxan [27]

Answer:

2 and 3

Explanation:

because that's how kinetic and potential energy work

3 0

3 years ago

Two round concentric metal wires lie on a tabletop, one inside the other. The inner wire has a diameter of 18.0 cm and carries a

Helen [10]

Answer:

Explanation:

The wires are in circular shape . They have common center .

magnetic field due to circular wire is given by the formula

B = $\frac{\mu_0\times I }{2r}$

where I is current , r is radius of the coil .

magnetic field due to inner wire

= $\frac{\mu_0\times 10 }{2\times.09}$

magnetic field due to outer wire

= $\frac{\mu_0\times I }{2\times.15}$

These should be equal and opposite so that by cancelling each other , they create zero field.

$\frac{\mu_0\times 10 }{2\times.09}$ = $\frac{\mu_0\times I }{2\times.15}$

I = 16.66 A

Direction of current should be in opposite direction ie anticlockwise when looking from above.

6 0

4 years ago

Greater red shifts in the spectra of galaxies indicate _____.

lana [24]

Greater red shifts in the spectra of galaxies indicate faster speeds.

4 0

3 years ago

Read 2 more answers

Starlight is released during which nuclear reaction?

Likurg_2 [28]

Answer:

D. Nuclear fusion

Explanation:

Nuclear fusion is a nuclear reaction where nuclei of atoms( one of low atomic number and another with a higher atomic number) join together to form a much bigger nucleus and release a lot of energy.In the sun, which is a star of course, where light is released,hydrogen is converted to helium and the process releases massive energy into space in form of heat and light.

6 0

4 years ago

Read 2 more answers