Which physical quantity among the following remains on change when sound wave is reflected from a plane surface?

Which physical quantity among the following remains on change when sound wave is reflected from a plane surface?

frequency

Which is the following is the requirement for regular reflection of sound?

Sound must come back to the person after 0.1 second. For above condition, the reflecting surface must be at a minimum distance of 17.2m.

Is the repetition of original sound?

An echo is the repetition of the original sound because of reflection by some surface.

Why do hard surfaces reflect sound?

Hard surface reflects the soundwaves back to where the sound waves originated, because they can not penetrate the solid very easily so the sound waves bounce off the hard material.

Which of the following is required for reflection?

Following are the two conditions for the total internal reflection to take place: The angle of incidence in the denser medium must be greater than the critical angle for that pair of media. The ray of light must travel from a denser medium into a rarer medium.

How do we see reflections?

The key factor is a smooth surface, because rough surfaces scatter light instead of reflecting it. When photons — rays of light — coming from an object (your smiling face, for example) strike the smooth surface of a mirror, they bounce back at the same angle. Your eyes see these reflected photons as a mirror image.

How do you describe a reflection of a shape?

When describing a reflection, you need to state the line which the shape has been reflected in. The distance of each point of a shape from the line of reflection will be the same as the distance of the reflected point from the line. When describing a rotation, the centre and angle of rotation are given.

How do you enlarge a shape with a center?

A transformation is a way of changing the size or position of a shape. To enlarge a shape, a centre of enlargement is required. When a shape is enlarged from a centre of enlargement, the distances from the centre to each point are multiplied by the scale factor.

How do you describe a reflection transformation?

A reflection is a type of transformation. It ‘maps’ one shape onto another. When a shape is reflected a mirror image is created. If the shape and size remain unchanged, the two images are congruent.

How many types of transformations are there?

four

How do you write a transformation?

The function translation / transformation rules:

1. f (x) + b shifts the function b units upward.
2. f (x) – b shifts the function b units downward.
3. f (x + b) shifts the function b units to the left.
4. f (x – b) shifts the function b units to the right.
5. –f (x) reflects the function in the x-axis (that is, upside-down).

What is transformation with example?

Transformation is the process of changing. An example of a transformation is a caterpillar turning into a butterfly. noun.