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TN 9th Tamil அமுதென்று பேர் - இலக்கணம்-எழுத்து -அளபெடை Important Questions And Answers Study Material - QB365 Set A
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Published on: 18/09/2019
Measurement and Measuring Instruments
Download Tamil Nadu 9th 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.
Define length.
2.
Complete the table:
| Power of 10 | Prefix | Symbol |
| 1012 | ___(i)___ | T |
| ___(ii)___ | Kilo | K |
| 1015 | Peta | ___(iii)__ |
| 109 | ___(iv)__ | ___(v)__ |
3.
Calculate the correct readings of the Vernier caliper L.C. 0.01 cm Zero correction - Nil.
| S.No. | M.S.R | V.C | Observed Reading = M.S.R + (V.C x L.C) | Correct Reading |
| 1 | 3 | 4 | ||
| 2 | 3 | 7 |
4.
What is the least count of your wristwatch?
5.
Convert: 104°F into Celsius scale.
6.
Convert: 300 K into Celsius scale,
7.
Can you find the diameter of a thin wire of length 2 m using the ruler from your instrument box?
8.
What do you know about pitch of screw gauge?
9.
Define least count of any device.
10.
Define measurement
1.
Length is defined as the distance between two points. The SI unit of length is metre.
2.
(i) tera
(ii) 103
(iii) P
(iv) giga
(v) G
3.
| S.No. | M.S.R | V.C | Observed Reading = M.S.R + (V.C x L.C) | Correct Reading |
| 1 | 3 | 4 | 3 + (4 x 0.01) | 3.04 |
| 2 | 3 | 7 | 3 + (7 x 0.01) | 3.07 6.11 ____ 2 |
Correct reading = 3.55 cms.
4.
1 second.
5.
Celsius = (F – 32) × \(\frac{5}{9}\)= (104 - 32) ×\(\frac{5}{9}\) = 72 × \(\frac{5}{9}\) = 40°C.
6.
Celsius = K - 273 = 300 - 273 = 27°C.
7.
No. I cannot find the diameter of a thin wire by using the ruler.
8.
The pitch of the screw is the distance moved by the tip of the screw for one complete rotation of the head. It is equal to 1 mm in typical screw gauges.
\(\text{Pitch of the screw }=\frac{\text{Distance moved by the Pitch}}{\text{No. of rotations by Head scale}}\)
9.
Least count is least distance measured by a device. In Vernier Caliper the value of one smallest main scale division is divided with total number of vernier scale division.
10.
Measurement is defined as the determination of the size or magnitude of something.
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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Tamilnadu Stateboard 9th Standard Subjects
Tamilnadu Stateboard Standards
