Doppler Effect acts on ___________ type of wave

Physics

1 answer:

Anuta_ua [19.1K]3 years ago

4 0

Answer:

option c

Explanation:

<h3>As per the doppler's effect, when an object in the universe move at a fast speed away from the observer, its possesses a high wavelength as compared to its original wavelength.</h3><h3 /><h3>Since red light has the highest wavelength, any object's wavelength moving towards a high values is said to be red shifted.</h3><h3 /><h3>As per the doppler's effect, when an object in the universe move at a fast speed away from the observer, its possesses a high wavelength as compared to its original wavelength.Since red light has the highest wavelength, any object's wavelength moving towards a high values is said to be red shifted.Thus, the higher the wavelength, the lower will be the frequency of an object and hence it moves at a faster speed away from the observer and hence the universe is said to be expanding.</h3><h3 /><h3>As per the doppler's effect, when an object in the universe move at a fast speed away from the observer, its possesses a high wavelength as compared to its original wavelength.Since red light has the highest wavelength, any object's wavelength moving towards a high values is said to be red shifted.Thus, the higher the wavelength, the lower will be the frequency of an object and hence it moves at a faster speed away from the observer and hence the universe is said to be expanding.Thus, option C is correct.</h3><h3>hope help</h3>

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A 200kg ball on the end of string is swung in horizontal circle with radius of 0.5m . The ball makes revolution every 2second th

ANEK [815]

Answer: $\dfrac{\pi}{2} ms^{-1}$

Explanation:

Let $T$ be the time required to make one revolution.

Let $r$ be the radius of the circular path.

Let $d$ be the distance travelled by ball in one revolution.

As we know,the distance travelled in one revolution is the circumference of the circle.

So, $d=2\pi r$

Given, $d=0.5m\\T=2sec$

$d=2\times \pi \times 0.5=\pi m$

Speed of an object moving is circular path is define as the ratio of distance travelled in one revolution to the time taken by the object to complete one revolution.

Let $s$ be the speed of the ball.