Name the substance in which starch becomes dark blue in colour.
1 answer:
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Elementary charge used to determine charges of other objects is equal to a charge of electron or proton. It's value is roughly 
. All other charges are whole-number multipliers of this elementary charge, meaning that we multiply elementary charge by {...,-2,-1,0,1,2,...}.
To find out if the measured charge can be accepted we need to divide it with elementary charge to see if we get whole number as result.
There are three possible values of measured charge:
As we can see none of the possible values of a measured charge is whole-number multiplier of elementary charge so the researcher should not accept the value.
This charge can be achieved by using quarks which have value of 1/3 of elementary charge but they do not remain stable for long enough.
To find out if the measured charge can be accepted we need to divide it with elementary charge to see if we get whole number as result.
There are three possible values of measured charge:
As we can see none of the possible values of a measured charge is whole-number multiplier of elementary charge so the researcher should not accept the value.
This charge can be achieved by using quarks which have value of 1/3 of elementary charge but they do not remain stable for long enough.
Answer:
Explanation:
Given:
wavelength used by the first microscope,
resolving power of the first microscope,
wavelength used by the second microscope,
For the microscopes the resolving power is given as:
where:
wavelength of the laser source used
numerical aperture of the microscope
smallest feature that can be distinguished using the optical device
For the first microscope:
Since both the optical device are identically built we will have:
Now for the second optical device: