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Dear Student,

JEECUP Group I new syllabus UP Board ke Class 11 and 12 course curriculum ke anusar frame kiya gaya hain jis mein Physics, Chemistry, and Mathematics subjects added hain. Aap entrance exam preparation ke liye UP Board Class 11th and 12th ke new syllabus follow kar sakte hain. Poora JEECUP 2025 syllabus detail mein humare page pe diya hua hain. JEECUP Group I syllabus ke through Diploma in Aircraft Maintenance Engineering, Diploma in Aircraft Maintenance Engineering (Avionics), and Diploma in Aircraft Maintenance Engineering (Helicopter and Powerplants) courses mein admission diya jayega. Iss saal JEECUP 2025 exam May 20 se May 28 tak conduct hoga. Hum umeed karte hain yeh jaankari aap ke liye useful rahi ho. Good luck!

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Dear Student,

JEECUP exam ek state-level entrance exam hain jo Uttar Pradesh ki government and private engineering colleges mein Diploma/ Polytechnic course admission ke liye conduct kiya jata hain. Iss exam ke through aap Engineering, Technology, or Pharmacy streams mein Diploma kar sakte hain. JEECUP 2025 exam pattern ke anusaar yeh test online mode mein conduct hoga total 400 marks ke liye. As a student, aap ko 150 minutes (2 hours 30 minutes) mein total 100 MCQ type questions attempt karne hoge. JEECUP exam paper Hindi aur English dono langauge mein rahega. Har question ke sahi answers ke liye aap ko 4 marks milenge; Galat answer ke liye koi negative marking nahi hogi. Saare questions JEECUP syllabus ke anusar hi hoge, jo ki Class 10th/ 11th/ 12th level ka hain.Iss saal JEECUP 2025 exam May 20 se May 28 tak conduct hoga. Hum umeed karte hain yeh jaankari aapke liye useful rahi ho. Good luck!

If you have further queries regarding Diploma/ Polytechnic course admission, you can write to hello@collegedekho.com or call our toll free number 18005729877, or simply fill out our Common Application Form on the website.

Dear student,

You are asking if the focal length of a lens is 20 cm, what is its power in diopters?

Calculating Lens Power:

• Power of a lens is defined as the reciprocal of its focal length when expressed in meters
• The unit of power of a lens is diopter (D)

Formula:

• Power (P) = 1 / focal length (in meters)

Given:

• Focal length (f) = 20 cm = 0.2 meters

Calculation:

• Power (P) = 1 / 0.2 = 5 diopters

Therefore, the power of the lens is +5 diopters

Why is it positive?

• A positive power indicates a convex lens (converging lens)
• Convex lenses are thicker at the center and thinner at the edges
• They converge light rays to a point called the focus

convex lens

Additional Notes:

• Concave Lens: If the lens were concave (diverging lens), the power would be negative
• Units: Always ensure that the focal length is converted to meters before calculating the power in diopters

Therefore, if a lens has a focal length of 20 cm, its power is +5 diopters. This means it is a convex lens capable of converging light rays.