Answer 14. B. (centi-10-2, milli- 10-3, micro- 10-6, Nano- 10-9, Pico- 10-12).
Answer 15. A. Condenser- Robert Hooke
B. side pillar or arm - Louis Joblot
C. Stage adjustment knobs- Anton van leeuwenhoek
Answer 16. C. Artificial lighting
QUESTION 14 Choose the pair of Metric units in which 1000 is not the O A....
Like Robert Hooke, Leeuwenhoek also invented a microscope, which did not have O A. Optical Tube O B. Eyepiece O C. Artificial lighting O D. All of the above