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The mirror formula, ( \frac{1}{f} = \frac{1}{d_o} + \frac{1}{d_i} ), is valid only for small apertures because it assumes paraxial rays (rays close to the optical axis). For large apertures, the non-paraxial rays behave differently and the simple mirror formula may not accurately predict the image location.

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Albert Einstein's famous formula E mc2 in practally valid or not?

Yes, Albert Einstein's formula E=mc^2 is practically valid. It is a fundamental equation in physics that relates energy (E) to mass (m) and the speed of light (c). This equation has been proven through numerous experiments and is a cornerstone in understanding the relationship between energy and matter.


Does the law of reflection apply to curved and flat mirrors?

The law of reflection is valid for any ray of light. So it is also valid for curved and flat surfaces. For curved surfaces, the normal is taken as the normal to the tangent of the point where the light ray hits the surface.


Which of the following quark combinations is a valid option?

A valid quark combination is one that follows the rules of the strong nuclear force. For example, a valid quark combination could be a proton, which consists of two up quarks and one down quark.


What does valid frequency mean?

Valid frequency refers to the number of times an event, behavior, or data point occurs within a specific time frame. It is used in statistical analysis to measure the reliability and consistency of patterns within the data set. Valid frequency helps researchers make accurate conclusions and predictions based on the frequency of specific occurrences.


How must a javelin land to be valid for it to be measured?

A javelin must stick horizontally into the ground, without leaning to either side, in order to be considered valid for measurement in competition. If the javelin lands pointed downward or at an angle, it will not be counted.

Related Questions

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The formula for calcium chloride is CaCl2. The formula you provided, "CaCICI," is not a valid chemical formula.


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No, they are different.


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The #REF! error.


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H2NO3 is not a valid chemical formula. Nitric acid, which has the formula HNO3, is an acid.


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What is the chemical s2so4?

S2SO4 is not a valid chemical formula. The correct formula for sulfuric acid is H2SO4.


Is the chemical formula for chlorine Cl or C1?

The chemical formula for chlorine is Cl, which represents one atom of chlorine. C1 is not a valid chemical formula.


Is Zn5I31 a valid chemical formula?

No, Zn5I31 is not a valid chemical formula. Chemical formulas typically consist of elemental symbols and numerical subscripts following rules of chemical bonding and stoichiometry, so this notation is not consistent with those rules.


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AlO4 does not correspond to a known chemical formula or compound. It is not a valid representation in chemistry.


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