If we want to see our full image then the minimum size of the plane mirror:
(a) should be twice of our height.
(b) should be of our height
(c) should be half of our height
(d) depends upon our distance from mirror

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

In science and physics what is the standard unit of measure for speed?