Lagnever AI English

Pinhole camera kaise banayein?

Short mein jawab

Pinhole camera ek dabba hai jiske ek taraf chhota chhed aur doosri taraf translucent screen hoti hai. Kisi cheez ki roshni seedhi line mein chhed se guzarkar screen pe pahunchti hai. Cheez ke upar ki kirnein neeche aur neeche ki kirnein upar padti hain, isliye image ulta, yaani inverted hota hai.

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Pinhole camera kya hai?

Image sirf mirror hi nahi banata. Pinhole camera mein kisi cheez ki roshni ek chhote chhed, yaani pinhole, se guzarkar screen pe image banati hai. Isme na lens chahiye na bijli, bas screen ke aas-paas andhera aur dekhne ke liye koi chamakti cheez. Ye isliye kaam karta hai kyunki roshni seedhi line mein chalti hai.

Screen pe moambatti

Cardboard ke ek tukde mein chhota chhed karo aur use halki roshni waale kamre mein screen se thodi door khada karo. Kisi bade ki dekh-rekh mein chhed ke saamne jalti moambatti rakho. Screen pe lau ka chhota sa image banta hai, aur usme ek hairaani hai: lau neeche ki taraf hoti hai. Image ulta (inverted), yaani upar-neeche palta hua hai.

Moambatti, pinhole waala cardboard aur screen; moambatti ke upar aur neeche ki kirnein chhed pe kaatkar ulta image banati hain
Pinhole image ulta kyun hota hai

Image ulta kyun hota hai

Do kirnein socho. Lau ki chot se roshni seedhi line mein chhed se neeche ki taraf jaati hai aur screen pe neeche padti hai. Moambatti ke tal se roshni usi chhed se upar ki taraf jaati hai aur upar padti hai. Cheez ka har bindu apni seedhi lakeer se chhed ke paar roshni bhejta hai, aur ye saari lakeerein pinhole pe ek doosre ko kaatti hain. Isliye cheez ka upar image mein neeche aur neeche upar dikhta hai. Isi kaatne se left aur right bhi badal jaate hain. (Extra) Screen chhed se jitni door ho, image utna bada aur feeka; jitni paas, utna chhota aur chamakdaar.

Pinhole camera se dekha ped: screen pe uska image ulta, tana upar aur nukeela hissa neeche
Pinhole camera mein ped

Sliding pinhole camera banao

Bahar use karne ke liye tum pinhole camera bana sakte ho:

  1. Do cardboard ke dabbe lo, jinme se ek doosre mein bahut kam gap ke saath khisak sake. Dono ki ek taraf kaat kar khol do.
  2. Bade dabbe ki khuli taraf ke saamne waali satah ke beech mein chhota chhed karo.
  3. Chhote dabbe ki usi satah mein lagbhag 5–6 cm ki chaukor khidki kaato aur us pe tracing paper lagao. Yahi screen hai.
  4. Chhote dabbe ko bade mein khiskaao, tracing paper andar ki taraf.
  5. Pinhole ko tez dhoop mein kisi ped ya imaarat ki taraf karo, apne sir aur camera pe ek kaala kapda daalo, aur khule sire se dekho. Saaf image aane tak andar waale dabbe ko aage peechhe khiskaao.

Image rangeen hote hain, aur ulte hote hain.

Pinhole ya mirror?

Pinhole camera aur plane mirror dono image banaate hain, par alag alag. Pinhole ka image screen pe padta hai aur ulta hota hai. Mirror ka image screen pe nahi aata aur seedha rehta hai, sirf left aur right badalte hain. Dono ke baare mein aage ki kakshaon mein aur seekhoge. (Extra) Prakriti mein bhi yahi hota hai: patton ke beech ke gap pinhole jaise kaam karte hain, isliye aanshik surya grahan ke samay ped ke neeche dhoop ke dhabbe Sun ki chhoti chhoti chaand jaisi tasveerein ban jaate hain.

Ye kyun zaroori hai

Pinhole camera sabse saral camera hai, aur ye saaf dikhaata hai ki roshni seedhi line mein chalti hai. Parchhaai kaise banti hai? dohrao aur mirror image ki tulna reflection aur plane mirror mein karo. Textbook ke sawaalon ke jawab Chapter 11 ke NCERT solutions mein hain; poore Chapter 11 ke notes dekho.

Practice karo

  1. Pinhole camera ka image hota hai:

    1. (a) erect
    2. (b) ulta (inverted)
    3. (c) hamesha cheez se bada
    4. (d) mirror pe bana
    Jawab dekho

    Jawab: (b) ulta (inverted)

  2. Sliding pinhole camera mein screen kis cheez ki hoti hai?

    1. (a) kaanch
    2. (b) tracing paper
    3. (c) cardboard
    4. (d) mirror
    Jawab dekho

    Jawab: (b) tracing paper

  3. Pinhole camera ka image ulta kyun hota hai?

    1. (a) chhed roshni ko modta hai
    2. (b) roshni seedhi lakeeron mein chalti hai jo chhed pe kaatti hain
    3. (c) screen ulti lagi hai
    4. (d) dabba andhera hai
    Jawab dekho

    Jawab: (b) roshni seedhi lakeeron mein chalti hai jo chhed pe kaatti hain

  4. Kya pinhole camera ke image mein rang dikhte hain?

    Jawab dekho

    Jawab: Haan. Cheez ke har hisse ki roshni pinhole se guzarte hue apna rang nahi badalti, isliye hari pattiyon ka image hara aur moambatti ki lau ka image naarangi dikhta hai.

  5. Pinhole camera ka image plane mirror ke image se kaise alag hai?

    Jawab dekho

    Jawab: Pinhole camera screen pe ulta (upar-neeche ulta) image banata hai. Plane mirror erect image banata hai jisme sirf left aur right badalte hain, aur wo screen pe nahi aata.

Students ke sawal

Pinhole camera kya hai?

Pinhole camera ek saral upkaran hai jisme kisi cheez ki roshni ek chhote chhed se guzarkar screen pe image banati hai, aam taur pe ek dabbe ke andar jo baaki roshni rokta hai.

Ghar pe pinhole camera kaise banayein?

Do cardboard ke dabbe lo jo ek doosre mein khisak sakein, aur dono ki ek taraf kaat do. Bade dabbe ki khuli taraf ke saamne waali satah ke beech mein chhota chhed karo. Chhote dabbe ki usi satah mein 5–6 cm ki chaukor khidki kaato aur us pe tracing paper lagao. Chhote dabbe ko andar khiskaao, tracing paper andar ki taraf, aur khule sire se kisi chamakti cheez ko dekho.

Pinhole camera ka image ulta kyun hota hai?

Roshni seedhi line mein chalti hai. Cheez ke upar ki kirnein chhed se neeche jaakar screen ke neeche padti hain, aur neeche ki kirnein upar jaakar screen ke upar. Kirnein pinhole pe ek doosre ko kaatti hain, isliye image ulta hota hai.

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