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A concave lens produces a virtual image with a negative magnification. This means that the image is smaller than the actual object and appears on the same side as the object.

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What is the magnification of a 4 cm tall object placed 40 cm from a concave mirror having a focal length of 10 cm?

The magnification can be calculated using the magnification formula: M = -f / (f - d), where f is the focal length and d is the object distance. In this case, f = 10 cm and d = 40 cm. Plugging in these values gives M = -10 / (10 - 40) = -10 / -30 = 1/3. Therefore, the magnification is 1/3.


Is any quantity having a positive and negative values a vector?

No, not necessarily. A vector is a quantity that has both magnitude and direction. While it can have positive and negative values, not all quantities with positive and negative values represent vectors. Vectors must also obey the rules of vector addition and scalar multiplication.


Is oil convex or concave?

Oil is considered to be concave when placed between two surfaces, such as in a meniscus. This is due to oil having cohesive forces that cause the liquid to curve downward between the surfaces.


How does an electron acquire a negative charge and what is the significance of this charge in the context of atomic structure?

An electron acquires a negative charge by having an excess of negatively charged particles called electrons. In the context of atomic structure, the negative charge of an electron is significant because it balances the positive charge of protons in the nucleus, creating a stable atom. This balance of positive and negative charges allows atoms to form bonds with other atoms and participate in chemical reactions.


What is the Hounsfield unit of water?

The Hounsfield unit of water is 0. It serves as the reference point in Hounsfield units, with densities higher than water having positive values and lower densities having negative values.

Related Questions

If the acceleration is increasing with time will the velocity graph be a straight line concave up or concave down?

Concave up. "Acceleration is increasing with time" tells us that the derivative of acceleration is positive. Since acceleration is the derivative of velocity, this means that the second derivative of velocity is positive. By definition, having a non-negative second derivative means that velocity is concave up.


Does an negative equal an positive?

No. If they were then there would be no point in having a negative.


How do you multiply integers having unlike sign?

Positive x Positive = Positive Negative x Negative = Positive Positive x Negative = Negative Basically if the signs are the same, the answer will always be positive, and if the signs are different the answer will be negative. Hope this helps.


Is the beatles credited with having a positive or negative impact on the modern world?

Positive


When ions having a positive charge form bonds with ions having a negative charge the charge on the resulting compound is what?

The charge is 0 if the positive and negative charges were equal


Where could you find negative numbers?

If an altitude above sea level is positive, then an altitude below sea level is negative.If having money is positive, having a debt is negative.If gaining money is positive, losing money is negative (a negative gain).If an increase in speed is a positive acceleration, a decrease in speed is a negative acceleration.Any other similar case, where you define one thing as positive, and its opposite as negative.


What is critisism?

Criticism is having a comment for something and delivering it, whether in a positive or completely negative way. Criticism is having a comment for something and delivering it, whether in a positive or completely negative way.


Can a positive Australia antigen test change into negative?

yes. if you are having acute hepatitis with Australia antigen positive it can later become negative.


Is the exterior angle sum theorem true for concave polygons?

Yes, if you interpret some of the exterior angles as having negative measure.


When ions having a positive charge from bonds with ions having a negative charge the charge on the resultion compound is negative?

just put true


What is an image negative?

A piece of photographic film having the negative (opposite) image of your positive print or image.


Was bay of pigs a positive or negative effect?

Most people would consider it having a negative effect