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Can A Radius Be Negative? Quick Answer

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So not only is it possible for a circle to have a negative radius, all circles already do have a negative radius! This is about the radius squared — negative square would imply something like imaginary radius, not negative radius.r. By convention, distances are measured, along the central axis, as positive from the mirror in the direction of the object and negative away from the object. Hence the radius of curvature and the focal length are positive for concave mirrors and negative for convex mirrors. Figure 1: The three types of mirrors.If the vertex lies to the right of the center of curvature, the radius of curvature is negative. Thus when viewing a biconvex lens from the side, the left surface radius of curvature is positive, and the right radius of curvature is negative.

Can A Radius Be Negative
Can A Radius Be Negative

Is radius positive or negative?

r. By convention, distances are measured, along the central axis, as positive from the mirror in the direction of the object and negative away from the object. Hence the radius of curvature and the focal length are positive for concave mirrors and negative for convex mirrors. Figure 1: The three types of mirrors.

Can radius of curvature negative?

If the vertex lies to the right of the center of curvature, the radius of curvature is negative. Thus when viewing a biconvex lens from the side, the left surface radius of curvature is positive, and the right radius of curvature is negative.


Can 2^x be negative?

Can 2^x be negative?
Can 2^x be negative?

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Can 2^X Be Negative?
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Can a circle have a radius of 0?

Answer. A circle with zero radius is called a point.

Can polar angles be negative?

The angle, θ, is measured from the polar axis to a line that passes through the point and the pole. If the angle is measured in a counterclockwise direction, the angle is positive. If the angle is measured in a clockwise direction, the angle is negative.

What is radius of curvature of convex lens positive or negative?

The radius of curvature of first surface of convex lens is positive, but radius of curvature of it’s second surface is negative. You can see that radius of curvature and focal length of concave mirror are negative.

What is radius curve?

In differential geometry, the radius of curvature, R, is the reciprocal of the curvature. For a curve, it equals the radius of the circular arc which best approximates the curve at that point.

Why is the object distance negative?

The object distance is always negative in optical distances according to sign convention rules. A convex lens bulges out on the source of light. It is a converging lens which means that the parallel rays coming from the source would converge at one point called the principal focus after passing through the lens.


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What will happen if the radius of a circle has a negative value?

yes radius can negative ,which means that it is measured on the perfectly opposite direction of a specific side of that circle .

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If a circle with negative radius could exist (philosophical)

Viewing a circle as the set of points a given distance (the radius) away from a given point (the centre) you would need to consider a notion …

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Can you have negative radius polar coordinates? – Best …

There is no circle with a negative radius,because negative numbers do not exist in real life. You cannot say I have -1 pen,but you can say I got -1 pen meaning …

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Find the center and radius of the given circle and graph it.

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What is the radius of curvature of a concave mirror?

Hint:The radius of curvature of convex or concave mirror is equal to two times of the focal length of convex or concave mirror. The radius of curvature is the radius of sphere formed by the convex or concave mirror. It is also equal to the distance between the pole and centre of curvature.

What is the radius of curvature of plane mirror?

So, radius of curvature for a plane mirror will be infinite.

What is the radius of curvature of a sphere?

Radius of curvature of a spherical mirror = 2 X Focal length (f) R= 2f.


Can Probability be Negative? | Quantum Mechanics | Quantum Computing

Can Probability be Negative? | Quantum Mechanics | Quantum Computing
Can Probability be Negative? | Quantum Mechanics | Quantum Computing

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Which one is not a radius of the given circle?

Answer: CA is not radius. It is the longest chord known as Diameter. So CA is the answer.

Does a circle have 0 or infinite sides?

Every point on the boundary of the circle is an extreme point, so it is certainly true that a circle has infinitely many.

Is a circle infinite?

The circle is the symbol for infinity, because the circle is endless, and may be considered a polygon with an infinite number of sides.

Is Sine always positive?

The sine ratio is y/r, and the hypotenuse r is always positive. So the sine will be negative when y is negative, which happens in the third and fourth quadrants.

What is polar angle?

In the plane, the polar angle is the counterclockwise angle from the x-axis at which a point in the. -plane lies. In spherical coordinates, the polar angle is the angle measured from the -axis, denoted. in this work, and also variously known as the zenith angle and colatitude.

Are there negatives on the unit circle?

The unit circle is a platform for describing all the possible angle measures from 0 to 360 degrees, all the negatives of those angles, plus all the multiples of the positive and negative angles from negative infinity to positive infinity.

How do you know if a radian is positive or negative?

Positive and negative angles

When an object rotates in an clockwise direction, it makes a negative angle of rotation while when it rotates in anticlockwise direction, it makes a positive angle.

Why is the radius of a concave mirror negative?

Since, object is always placed in front of the mirror hence the sign of object is taken as negative. Since, the centre of curvature and focus lie in front of the concave mirror, so signs of radius of curvature and focal length are taken as negative in the case of concave mirror.


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Is R negative in convex lens?

r is negative for concave faces and positive for convex (as seen from the object). r1 is the radius of curvature of the face closest to the object and r2 is the radius of curvature of the other face. f is positive for converging lenses and negative for diverging lenses.

Is focal length negative in concave mirror?

According to cartesian system focal length of a concave mirror is negative whereas radius of curvature of convex mirror is positive.

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