6. Which type of instrument would best be used to look at agrain of wheat pollen.
a) optical microscope
b) radio telescope
c) transmission electron microscope
d) scanning electron microscope
e) variable electron microscope
14) Rutherford’s alpha particle -scattering experiment showedthat most alpha particles directed toward a thin metallic foilpassed through with only slight deviations. From this evidence wecan conclude that.....
18. Two stars star A and star B are the same size. Thetemperature of star A is 8000 K and the temperature of star B is4000 K. How do their total luminosities compare.
