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aliina [53]
3 years ago
5

Light incident on a surface at an angle of 45° undergoes diffused reflection. At what angle will it reflect?

Physics
2 answers:
jok3333 [9.3K]3 years ago
8 0
<span>The correct answer is option D. i.e. at any angle between -90 and 90 degrees. In the diffused reflection ,the surface is rough and the direction of light in not the same as the incident light. It can be reflected at any angle. </span>
Korvikt [17]3 years ago
3 0

Answer:

D. at any angle between -90° and 90°

Explanation:

First of all, we need to understand the difference between specular reflection and diffuse reflection:

- Specular reflection occurs when the surface hit by the light is perfectly smooth. In this case, the law of reflection states that the angle at which the light is reflected is equal to the angle of incidence of the light (measured relative to the normal to the surface)

- Diffuse reflection occurs when the surface hit by the light is rough. In this case, the law of reflection is still valid for every ray of light hitting the surface; however, due to the imperfections of the surface, each ray of light hits the surface at a different angle of incidence. This means that the angle of reflection for each ray will be different, so light is reflected in any direction between -90 degrees and 90 degrees, which corresponds to the minimum and the maximum angle of reflection measured relative the normal to the surface.

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If the wavelength of a sound wave increases and the frequency of the sound wave does not change what happens to the speed of the
salantis [7]

If the wavelength of a sound wave increases and the frequency of the sound wave does not change, the speed of the wave will increase.

Ans: D

Explanation

The sound wave speed is given by E=fλ, where f indicates its frequency and λ indicates its wavelength.

From the equation, it is evident that the sound speed is proportional to both frequency and wavelength.

Here, as wavelength increases, wave speed increases provided there is no change in frequency.

3 0
3 years ago
A vector points -1.55 units along the x-axis and 3.22 units along the y-axis what is the magnitude of the vector
Rasek [7]

Answer:

3.57 units

Explanation:

x =\sqrt{ (-1.55)^2+(3.22)^2} = 3.57 units

5 0
3 years ago
Read 2 more answers
A video store owner noticed a 5% drop in rentals of DVDs after raising her prices 10%. Are DVD rentals
lukranit [14]

Answer:

Inelastic

Explanation:

The price elasticity of demand is the degree of responsiveness of demand for a product or service to a unit change in price. The demand for a product is said to be elastic when a change in price has a relatively large effect on the demand for the product, unitary when there is a percentage change in price brings about an equal percentage change in the demand for the product, and inelastic when a change in the price of a product brings about a smaller change in the demand for the product.

<em>In the case of the DVD rentals, a 10% increase in price brought about only a 5% drop in demand. Hence, the demand for DVD rentals is said to be inelastic because a change in the price brought about a smaller change in the demand for DVD rentals.</em>

8 0
3 years ago
While playing catch with my dog I bounced the ball off the ground at a 30-degree angle. It had a range of 6 meters.
baherus [9]

The initial velocity of the ball is 8.2 m/s

Explanation:

The motion of the ball is a projectile motion, which consists of two separate motions:

- A uniform motion along the horizontal direction, at constant velocity

- A uniformly accelerated motion along the vertical direction, with constant acceleration (g=9.8 m/s^2, acceleration of gravity)

The range of a projectile can be derived by the equation of motions along the two directions, and it is found to be:

d=\frac{v^2 sin 2\theta}{g}

where

v is the initial velocity of the projectile

\theta is the angle of projection

g is the acceleration of gravity

For the ball in this problem, we have

\theta=30^{\circ}

d = 6 m is the range

Solving for v, we find the initial velocity:

v=\sqrt{\frac{gd}{sin 2\theta}}=\sqrt{\frac{(9.8)(6)}{sin (2\cdot 30^{\circ})}}=8.2 m/s

Learn more about projectile motion:

brainly.com/question/8751410

#LearnwithBrainly

7 0
3 years ago
Explain one reason why your weight on Jupiter is 2.7 times your weight on Earth
Umnica [9.8K]
As the mass of jupiter is more than the mass of earth it has a greater graviationsl force in it........as we know that our weight depends on mass of object and thr gravitational force on it......if the gravitational force is increased the object's weight will definitely increase......
Due to more mass of jupiter than earth it means that there are more forces acting on every single point where mass acts......if these points are more the gravitational force will also increase.......

HOOE IT HELPED !!!!
3 0
3 years ago
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