Length sahi kaise naapein

Sahi device chuno

Pehle lambaai ke hisaab se device chuno:

• chhoti cheezon, jaise pencil ya rubber, ke liye 15-cm scale;
• kamre ki oonchaai ya table ki lambaai ke liye metre scale ya measuring tape;
• maidaan ke liye lamba measuring tape, jaise kabaddi court banaate samay;
• ghumaavdaar cheezon, jaise ped ke tane ki golaai ya tumhari chhaati ke naap, ke liye darzi ke tape jaisa flexible tape.

Sakht metre scale ped ke tane ya kamar ke chaaron taraf nahi mud sakti, isiliye kuch measuring devices flexible cheezon se bane hote hain.

Scale sahi tarah rakho

Scale ko cheez ke saath-saath, usse chhoota hua rakho, taaki cheez ka ek sira zero mark par ho. Tedhi rakhi scale, ya cheez se door rakhi scale, galat reading deti hai.

Aankh mark ke theek upar rakho

Scale padhte samay aankh cheez ke sire ke theek upar honi chahiye. Ek taraf ya doosri taraf se dekhoge to sira kisi aur mark ke saath milta dikhega, aur reading galat hogi. Book ki tasveer mein sahi position B hai, pencil ki nok ke seedhe upar.

Tooti scale se naapna

Agar scale ka zero waala sira toota ho ya zero mark saaf na dikhe, to bhi use use kar sakte ho. Cheez ka ek sira kisi doosre poore mark, maan lo 1.0 cm, par rakho, doosre sire ka mark padho, maan lo 10.4 cm, aur ghatao: 10.4 cm − 1.0 cm = 9.4 cm.

Drishtiheen students ubhre hue nishaanon waali scale use karte hain jinhe chhookar mehsoos kar sakte hain.

Ghumaavdaar line naapna

Ghumaavdaar mehraabon ke liye string lights ki lambaai, ya koi bhi curved line naapne ke liye flexible measuring tape use karo, ya line ke saath dhyaan se dhaaga rakho, jahan wo shuru aur khatm ho wahan mark karo, dhaage ko seedha karo aur metre scale se naapo.

Doston ke jawab thode alag kyun aate hain?

Jab classmates ek hi pencil naapte hain, to jawab thode alag aa sakte hain. Wajah ho sakti hai ki scale theek cheez ke saath nahi thi, aankh mark ke theek upar nahi thi, shuruaat theek zero par nahi thi, ya reading do millimetre marks ke beech aayi aur alag tarah gol ki gayi. Dhyaan se naapne par ye farq chhote rehte hain.

Bahut chhoti aur bahut lambi lambaai

Ek panne ki motaai nikaalne ke liye bahut saari sheets dabaakar unki motaai naapo aur sheets ki ginti se bhaag do: agar 100 sheets 1 cm (10 mm) hain, to ek sheet lagbhag 0.1 mm moti hai. Sadak ki lambi doori ke liye cycle ke pahiye ke chakkar gino aur dhaage se naapi pahiye ke baahari kinaare ki lambaai se guna karo.

Nateeja sahi likho

Har nateeje mein number aur unit hoti hai, beech mein space ke saath: 9.4 cm, 1.42 m. Unit ke symbols chhote akshar mein hote hain aur unke saath na ‘s’ lagta hai na full stop.

Units ke baare mein padho length ki standard units. Textbook ke sawaalon ke liye dekho Chapter 5 ke NCERT solutions; poore chapter ke liye Chapter 5 ke notes.