8th Standard Syllabus & Materials
8th Standard
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NEW8th Standard
Tamilnadu 8th Standard роХрогро┐родроорпН роОрогрпНроХро│рпН Important Questions And Answers Study Material - QB365 Set B
NEW8th Standard
Tamilnadu 8th Standard роХрогро┐родроорпН роОрогрпНроХро│рпН Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
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NEW8th Standard
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NEW8th Standard
Tamilnadu 8th Standard Social Science роХрпБроЯро┐роорпИропро┐ропро▓рпН - рокро╛родрпБроХро╛рокрпНрокрпБ рооро▒рпНро▒рпБроорпН ро╡рпЖро│ро┐ропрпБро▒ро╡рпБроХрпН роХрпКро│рпНроХрпИ Important Questions And Answers Study Material - QB365
Published on: 30/08/2019
Measurement
Download Tamil Nadu 8th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
Quantities other than base quantities are called as
supplementary quantities
derived quantities
professional quantities
energy quantities
2.
SI unit stands for
International system of units
Integrated System of units
International symbol of units
Integrated symbol of units
3.
SI unit of temperature is __________
celsius
fahrenheit
kelvin
ampere
4.
The intersection of two straight lines gives us_______.
5.
The uncertainty in measurement is called as _______.
6.
One mole of a substance contains _______ atoms or molecules.
7.
Candela is used to express electric field intensity.
8.
Quartz clocks are used in GPS Devices.
9.
Angle formed at the top of a cone is an example for ‘Plane Angle’.
10.
Intensity of light coming from a candle is approximately equal to one ‘candela’.
11.
What do you mean by luminous Intensity?
12.
What is electric current?
13.
Define - ampere.
14.
List out the base quantities with their units.
15.
Round off the number 1.864 to two decimal places.
16.
Convert \(\frac { \pi }{ 4 } \) into degree.
17.
Convert 60° into radian.
1.
(b)
derived quantities
2.
(a)
International system of units
3.
(c)
kelvin
4.
( )
Plane angle
5.
( )
Errors
6.
( )
6.023 × 10+23
7.
(b)
8.
(b)
9.
(b)
10.
(a)
11.
i) The measure of the power of the emitted light in a particular direction per unit solid angle.
ii) S.I unit - candela (cd)
12.
Flow of electric charges in a particular direction in a unit time. SI unit-ampere
I = Q/R
13.
ampere:
One ampere is defined as one coulomb of charge moving in a conductor in one second.
14.
| Quanitity | Unit | Symbol |
| Length | Metre | m |
| Mass | Kilogram | kg |
| Time | Second | s |
| Temperature | Kelvin | K |
| Electric current | Ampere | A |
| Amount of substance | Mole | mol |
| Luminous intensity | Candela | cd |
15.
We need to round off the number to two decimal places. So, the last digit to be kept is 6. Since the next digit is less than 5, we can retain 6 as it is. So the answer is 1.86.
16.
We know that,
π radian = 1800
\(\frac { \pi }{ 4 } \) radian =\(\frac { 180 }{ 4 } \)=450
17.
We know that,
I0 =\(\frac { \pi }{ 180 } \)
=\(\frac { \pi }{ 3 } \) radian
8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard Social Science рокрпБро╡ро┐ропро┐ропро▓рпН - рокрпБро╡ро┐рокрпНрокроЯроЩрпНроХро│рпИроХрпН роХро▒рпНро▒ро▒ро┐родро▓рпН Important Questions And Answers Study Material - QB365
NEW8th Standard
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NEW8th Standard
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NEW8th Standard
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Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards
