Chapter 5: Lambai ka Maap aur Gati
Tumhari pencil kitni lambi hai? School kitni door hai? Bus chal rahi hai ya tum? Is chapter mein hum seekhenge standard units kyun chahiye, lambai sahi tareeke se kaise naapein (mudi bhi), sthiti kaise batayein, aur cheezein kin alag tareekon se chalti hain.
Is chapter mein tum
- samajhna ki standard units kyun chahiye
- ruler aur dhaage se lambai sahi naapna
- reference point se sthiti batana
- linear, circular aur oscillatory gati pahchaanna
Topics
- Hum Kaise Naapte Hain? NCERT 5.1
Naapna kisi maatra ki unit se tulna hai; maap = number + unit.
- Standard Units NCERT 5.2
Lambai ki SI unit metre (m) hai.
- Sahi Tareeke se Lambai Naapna, Mudi Lines Bhi NCERT 5.3–5.4
Lambai = ant ki padhai − shuru ki padhai. Toota ruler bhi kaam karta hai.
- Sthiti Batana NCERT 5.5
Sthiti reference point, doori aur disha se batate hain.
- Chalti Cheezein aur Gati ke Prakaar NCERT 5.6–5.7
Linear: seedhi line. Circular: kendra ke chaaron or. Oscillatory: aage-peeche.
Key words
- Unit
- naapne ke liye nishchit maatra
- SI unit of length
- metre (m)
- Reference point
- nishchit jagah jahan se sthiti batate hain
- Motion
- samay ke saath jagah badalna
- Linear, circular, oscillatory
- seedhi line, kendra ke chaaron or, aage-peeche
- Periodic motion
- barabar samay mein dohraane wali gati
Summary
- Naapna kisi maatra ki standard unit se tulna hai; lambai ki SI unit metre hai.
- 1 km = 1000 m, 1 m = 100 cm, 1 cm = 10 mm.
- Sahi naapo: ruler object ke saath, aankh theek upar, lambai = ant − shuru; mod ke liye dhaaga.
- Gati samay ke saath jagah badalna hai, reference point se dekha jaata hai. Prakaar: linear, circular, oscillatory.