9th Standard Syllabus & Materials
9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -கற்கண்டு (இலக்கணம்) - தொடர் இலக்கணம், ஆகுபெயர் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -விரிவானம் (துணைப்பாடம்) - தாய்மைக்கு வறட்சி இல்லை! Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -கவிதை பேழை (செய்யுள்) - மார்கழி பெருவிழா Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உயிருக்கு வேர்-இலக்கணம் - பகுபத உறுப்பிலக்கணம் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil அமுதென்று பேர் - இலக்கணம்-எழுத்து -அளபெடை Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil அமுதென்று பேர்-துணைப்பாடம் - ஆறாம்திணை Important Questions And Answers Study Material - QB365 Set A
Published on: 13/05/2022
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Questions + Answers key
Take MCQ Science Test1.
Find the thickness of a five rupee coin with the screw gauge, if the pitch scale reading is 1 mm and its head scale coincidence is 68.
2.
Inian and Ezhilan argue about the light year. Inian tells that it is 9.46 × 1015 m and Ezhilan argues that it is 9.46 × 1012 km. Who is right? Justify your answer.
3.
Calculate the diameter of the sphere which is shown in the Figure. Assume the scale has no zero error.
4.
Find out any ‘ten words’ related to measurement from the grid
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5.
Explain a method to find the thickness of a hollow tea cup.
1.
Pitch scale reading is = 1 mm
Head scale coincidence = 68
Thickness of 5 rupee coin = PSR + (HSC x L.C)
= 1 +(68 x 0.01)
= 1 + 0.68
= 1.68 mm
Thickness of five rupee coin is = 1.68 mm
2.
Inian's statement is correct
Because light travels 3 x 108 m in one second total number of second in one
year is equal to 365 x 24 x 60 x 60 = 3.153 x 107 second.
So one light year is = (3.153 x 107) x (3 x 108)
= 9.46 x 1015 m
3.
The diameter (D) of the sphere = Main scale reading (MSR) + (Vernier scale coincidence (VC) × least count (LC)) ± ZE. In this case the zero of the vernier scale is right after the main scale reading 1.1. So the main scale reading is 1.1 cm. The vernier scale coincidence is 7. The least count is 0.01 cm. The diameter of the sphere = 1.1 cm + (7 × 0.01 cm)‒0 = 1.1 + 0.07 = 1.17 cm.
4.
1. Accurate
2. Least Count
3. Kelvin
4. Beam balance
5. Constant
6. Pitch
7. Screw
8. Trial
9. Error
10. Vernier
5.
Finding the outer diameter of the tea cup:
1. Place the tea cup between the outside jaws.
2. Note the reading of main scale and vernier coincidence. Tabulate the readings.
3. The outer diameter of the tea cup is calculated by MSR + (VC x LC).
4. Repeat the experiment and find the average diameter.
Finding the inner diameter of the tea cup:
1. Place the tea cup between the inside jaws.
2. Note the reading of main scale and vernier coincidence.
3. Tabulate the readings.
4. The inner diameter of the tea cup is calculated by MSR + (VC x LC).
5. Repeat the experiment and find the average diameter.
| S.No | MSR | VSC | MSR + (VC x LC) ± ZC | |
| 1. 2. 3. |
Outer diameter | |||
| 1. 2. 3. |
Inner diameter |
The thickness of tea cup = outer reading - inner reading = __________ mm
9th Standard Syllabus & Materials
9th Standard
TN 9th Tamil உள்ளத்தின் சீர் - திருக்குறள் Important Questions And Answers Study Material - QB365 Set A
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TN 9th Tamil உள்ளத்தின் சீர் - மணிமேகலை Important Questions And Answers Study Material - QB365 Set A
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TN 9th Tamil உள்ளத்தின் சீர் - ஏறு தழுவுதல் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உயிருக்கு வேர் - தண்ணீர் Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 9th Standard Subjects
Tamilnadu Stateboard Standards
