Measurements 8

Question 1

Nautical mile

Answer 1

1852 miles

Question 2

Conductance unit

Answer 2

Mho

Question 3

1 cubic metre = how many lites

Answer 3

1000

Question 4

1 bar = how many pascals

Answer 4

10*5

Question 5

1 torr is equal to

Answer 5

1 mm of Hg

Question 6

1 atm = how many pascals

Answer 6

1.013 x 10*5 pascals

Question 7

1 atm = how many mm of Hg

Answer 7

760

Question 8

1 Amstrong is how many meters

Answer 8

10*-10

Question 9

Power S.I unit

Answer 9

Watt

Question 10

Capacitance S.I. unit

Answer 10

Farad (F)

Question 11

7 fundamental quantities

Answer 11

M E T2 A L2

M - Mass
E - Electric current
T - thermodynamic temperature
    - Time
A - Amount of substance
L - luminous intensity 
   - length

Question 12

Magnetic flux unit

Answer 12

Weber (W)

Question 13

Inductance unit

Answer 13

Henry (H)

Question 14

Magnetic Induction unit

Answer 14

Tesla (T)

Question 15

Unit of capacitance

Answer 15

Farads

Question 16

In physics, the weber is the SI unit of magnetic flux. A flux density of one Wb/m2 (one weber per square metre) is one tesla.

Answer 16

Read

Question 17

Electrostatic induction is an

Answer 17

Electrostatic influence

Question 18

Kerosene relative density

Answer 18

.8

Question 19

Mercury relative density

Answer 19

13.6

Question 20

Glass relative density

Answer 20

2.5

Question 21

Copper relative density

Answer 21

8.9

Question 22

Gold relative density

Answer 22

19.3

Question 23

Metre standard definition

Answer 23

Length of a platinum - iridium rod at 0°C in paris
Or
1/10 million of the distance from pole to the equator

Question 24

One kilogram definition

Answer 24

Mass of a certain lump of platinum - iridium in Paris

Question 25

One second definition

Answer 25

Time taken by a Celsius atom (133) to complete 9.1 billion vibrations (estimated)

Question 26

Least count of an instrument

Answer 26

Smallest measurement that the instrument can make accurately

Question 27

The error of we do not place our eyes directly in front of the scale u are measuring

Answer 27

Parallax error

Question 28

Vernier calliper is

Answer 28

An instrument used for measuring objects

Question 29

No of scales in vernier calliper

Answer 29

2 Main scale Vernier scale which slides on the main scale

Question 30

Unit named after a scientist should not be

Answer 30

Written starting with a capital letter if full name is written

Question 31

Symbols for units never take

Answer 31

Plural form

Question 32

1 ATM in dynes / cm*2

Answer 32

1.013 x 10 raised to 6

Question 33

Radioactivity units

Answer 33

curie (Cu) | rutherford (Rd)

Question 34

Radioactivity of any substance is measured in

Answer 34

Disintegration per second

Question 35

1 rutherford (Rd) =

Answer 35

10*6 disintegration per second.

Question 36

1 curie (Cu) =

Answer 36

3.7 x 10*10

Question 37

1 horse power =

Answer 37

746 watt

Question 38

No of supplementary qty

Answer 38

2

Question 39

Supplementary qty

Answer 39

Plane angle - radian | Solid angle - steradian

Question 40

Radian vs degrees

Answer 40

Radian is SI unit 180° = 1 pie

Question 41

farad vs faraday

Answer 41

farad - unit of capacitance | faraday - unit of charge

Question 42

1 faraday equal to charge of

Answer 42

6.02 x 10*23 electrons ( Avogadro’s no )

Question 43

Electron volt

Answer 43

a unit of energy equal to the work done on an electron in accelerating it through a potential difference of one volt.

Question 44

Largest unit of mass

Answer 44

CSL | Chandra Shekhar limit

Question 45

1 CSL =

Answer 45

1.4 times the mass of sun

Question 46

Smallest unit of energy

Answer 46

Electron volt (e.v.)

Question 47

Biggest unit of charge =

Answer 47

Faraday | 1 faraday = 96500 coulomb

Question 48

1 coulomb is the charge of

Answer 48

6.25 x 10*18

Question 49

Work =

Answer 49

Force x displacement x cos θ where θ represents the angle between force applied and displacement

Question 50

Kilowatt per hour -

Answer 50

Unit of energy (kWh)

Question 51

No of ergs in 1 kWh

Answer 51

36 trillion