11. Which one of the following units is the smallest ?

[A] X-unit

[B] Nicron

[C] Fermi

[D] Angstrom

View Answer

ANSWER: Option(C).


MEMORY: The fermi (fm) is a unit of length in the International System of Units, defined as 10−15meter using the SI prefix system. The unit was traditionally used for measuring the dimensions of atomic nuclei .

12. Which one among the following statements is not correct ?

[A] Unit of length: Meter

[B] Unit of mass: Kilogram

[C] Unit of temperature: Kelvin

[D] Unit of time: hour

View Answer

ANSWER: Option(D).


MEMORY: Option (d) is correct. As unit of time in all system is second.

13. How many dynes are there in one gram weight ?

[A] 855

[B] 999

[C] 375

[D] 981

View Answer

ANSWER: Option(D).


MEMORY: No memory available.

14. One nano-meter equals to

[A] 10-18

[B] 10-12

[C] 10-9

[D] 10-3

View Answer

ANSWER: Option(C).


MEMORY: No memory available.

15. How many supplementary units are there in SI system ?

[A] Three

[B] Five

[C] One

[D] Two

View Answer

ANSWER: Option(D).


MEMORY: There are two supplementary units in SI system which are, 1. Radian 2. Steredian.