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Independent K-12 Platform · NEP 2020 · NCF-SE 2023

Calculated Board Exam Papers, Dynamic SVG Diagrams & 5E Visual Lesson Plans in 15 Seconds

A parametric engine recalculates every numerical, redraws every diagram and rebuilds the marking scheme on each click — so Set-A, Set-B and Set-C never repeat. Print a clean student copy, an evaluator key and an HOD blueprint from the same paper.

  • ∞ Sets

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MODEL SENIOR SECONDARY SCHOOL Half-Yearly · Class X · Science (Physics) · Set-A (31/1/1)

Q3. The power of a lens of focal length +25 cm is:

[1]

+25 cm फोकस दूरी वाले लेंस की क्षमता है:

(a) +0.25 D(b) +4 D(c) −4 D(d) +2.5 D

Q14. An object is placed 20 cm in front of a convex lens of focal length 12 cm. Find the position and nature of the image.

[2]

12 cm फोकस दूरी वाले उत्तल लेंस के सामने 20 cm की दूरी पर एक वस्तु रखी है। प्रतिबिंब की स्थिति एवं प्रकृति ज्ञात कीजिए।

2F₁ F₁ O F₂ 2F₂ Object Image (real, inverted)
MARKING SCHEME · EVALUATOR COPY Class X · Science (Physics) · Set-A (31/1/1) · Confidential
  • Q3. (b) +4 D  ·  P = 1f = 10.25 m1

Q14. Value points

  • Lens formula: 1v − 1u = 1f½
  • u = −20 cm, f = +12 cm ⇒ 1v = 112 − 120 = 130½
  • v = +30 cm — beyond 2F₂, on the other side½
  • m = v/u = −1.5 ⇒ real, inverted, magnified½

✔ Accept any sign-convention-consistent method. Deduct ½ for missing units.

HOD BLUEPRINT · DESIGN OF QUESTION PAPER Half-Yearly · 40 Marks · 90 Minutes · Set-A
Sec.Question TypeQsMarks
AMCQ / Assertion–Reason1010
BVery Short Answer510
CShort Answer412
DCase / Source-Based28
Total2140
Remember20%
Understand30%
Apply30%
Analyse / Evaluate20%

Competency-focused items: 20 / 40 marks (50%) · Internal choice ≈ 33%

Sample output · Class X · Physics · Set-A (31/1/1) · Bilingual

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