Electrons used in electron microscope are of the wavelength
0.05 Å
0.15 Å
0.25 Å
0.30 Å
A.
0.05 Å
In electron microscope the source of radiation is electrons of wavelength of about 0.05 Å (0.005 nm). The electrons are emitted and accelerated in a vaccum tube and the electron beam is deflected by electromagnetic coils acting as condensor, objective and projector lenses.
A flower which can be divided into two equal halves by only one plane is
zygomorphic
actinomorphic
regular
perfect
Calcium level decreases in the blood due to hyposecretion of
parathyroid hormone
calcitonin
thyroxine
adrenaline