Measurements 7

Question 1

3 types of physical quantities

Answer 1

Fundamental or basic qty
Derived qty
Supplementary qty

Question 2

1 metric tonne =

Answer 2

1000 kg

Question 3

Quintal =

Answer 3

100 kg

Question 4

1 day contain how many seconds or minutes

Answer 4

86400 seconds or 1440 minutes

Question 5

Area of a sphere

Answer 5

4πr x r

Question 7

SI system when discovered

Answer 7

1960

Question 8

Volume of a sphere

Answer 8

4/3 x π x r x r x r

Question 9

Temp SI unit

Answer 9

Kelvin

Question 11

Force SI unit

Answer 11

Newton

Question 12

SI unit of mass

Answer 12

Kg

Question 13

Force formula

Answer 13

Mass x acceleration

Question 14

Pressure SI unit

Answer 14

Pascal

Question 15

Electric current SI unit

Answer 15

Ampere

Question 16

Luminous intensity SI unit

Answer 16

Candela - cd

Question 17

Early systems of measurement were based on only 3 fundamental quantities

Answer 17

Mass , time and length

Question 17

Pressure formula

Answer 17

Force/ area

Question 18

M =

Measure of a physical quantity

Answer 18

N x U- where N stands for number and U stands for unit

Question 20

Tera

Answer 20

10 raised to 12

Question 22

Exa

Answer 22

10 raised to 18

Question 23

PETA

Answer 23

10 raised to 15

Question 24

Giga

Answer 24

10 raised to 9

Question 25

1 micron =

Answer 25

10 raised to -6 metre

Question 26

Amt of substance SI unit

Answer 26

Mole - mol

Question 27

Density formula

Answer 27

Mass/ volume

Question 28

Vector can be divided by vector algebra

Answer 28

F

Question 29

Force formula

Answer 29

Mass x acceleration

Question 30

Velocity formula in 3 dimensions

Answer 30

L x T raised to -1

Question 31

Force formula in three dimensions

Answer 31

M x L x T raised to -2

Question 32

Pressure formula in three dimensions

Answer 32

M x L-1 x T-2

Question 33

Pressure is

Answer 33

Force per unit area

Question 34

Physics derived from the word

Answer 34

Fusis meaning nature and natural phenomena

Question 35

Perpendicular vectors also called

Answer 35

Orthogonal vectors

Question 36

Tan A =

Answer 36

Sin A / Cos A

Question 37

There is no actual .................... of vectors

Answer 37

Subtraction

Question 38

Pico

Answer 38

10 raised to -12

Question 39

Femto

Answer 39

10 raised to -15

Question 40

Atto

Answer 40

10 raised to -18

Question 41

1 parsec

Answer 41

3.26 light years

Question 42

Smallest practical unit of distance

Answer 42

Fermi

Question 43

Parsec full form

Answer 43

Parallactic second

Question 44

1 hectometre

Answer 44

100 metre

Question 45

1 hectare

Answer 45

Square of 1 hector (100 m)

Question 46

CGPM

Answer 46

General conference on weight and measures

Question 47

Smallest unit of time

Answer 47

Shake ( 10 raised to-8)

Question 48

Angstrom =

Answer 48

10 raised to -10 metres

Question 49

4 systems of measurements.

Answer 49

F.P.S C.G.S M.K.S SI