In an electron microscope the accelerating voltage is increased from 20 kV to 80 kV, the resolving power ofthe microscope will become.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

\frac{2}{R}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C 2R
We know that wavelength and accelerating voltage for an electron is related to each other as follows
$λ \propto \frac{1}{\sqrt{V}}$ [V is'potential applied]
and resolving power $\propto \frac{1}{λ}$ .
So, resolving power $\propto \sqrt{V}$
Now,if potential used is increased 4 times, resolving power will be increased 2 times.
So, if resolving power earlier is R. It becomes 2R.

Suggest Corrections

Similar questions

Q. In an electron microscope the accelerating voltage is increased from 20 kV to 80 kV, the resolving power of the microscope will change from R to

Q. In an electron microscope if the potential is increased from

20

kV to

80

kV, the resolving power R of the microscope will become :

Q. If accelerating potential increases from

20 K V

80 K V

in an electron microscope, its resolving power

R

would change to

An electron microscope works on principle of diffraction of electron beam .In the electron microscope if the Potential is increased from 20 kV to 80 kV, the resolving power R of the microscope will become

Q. The resolving power of an electron microscope operated at 16 kV is R. The resolving power of the electron microscope when operated at 4 kV is

Join BYJU'S Learning Program