CBSE CLASS 10 PHYSICS MODEL PAPER 2026: THE ULTIMATE PRACTICE SET

Physics is the most analytical part of the Science curriculum. To score a perfect 25/25 in the Physics section of the CBSE 10th class board exam 2026, you must master the sign conventions for Light and the circuit formulas for Electricity.

This model paper follows the latest board pattern, focusing on application-based questions and numerical accuracy.

SECTION A: MCQs & ASSERTION-REASON (1 MARK EACH)

Q1. A concave mirror produces a magnification of $+2$. The object is placed:

  • (a) At the focus

  • (b) Between Pole and Focus

  • (c) At Centre of Curvature

  • (d) Beyond C

Q2. The refractive indices of four media A, B, C, and D are $1.44, 1.50, 1.33,$ and $1.65$ respectively. In which of these media is the speed of light maximum?

  • (a) A

  • (b) B

  • (c) C

  • (d) D

Q3. If the current through a resistor is doubled, the power dissipated becomes:

  • (a) Double

  • (b) Half

  • (c) Four times

  • (d) One-fourth

Q4. Assertion (A): A magnetic field line is a path along which a north pole moves.

Reason (R): Magnetic field lines always intersect each other.

  • (a) Both A and R are true and R is the correct explanation of A.

  • (b) Both A and R are true but R is not the correct explanation of A.

  • (c) A is true but R is false.

  • (d) A is false but R is true.

SECTION B: SHORT ANSWER QUESTIONS (2 MARKS EACH)

Q5. State the two laws of reflection of light.

Q6. Define the SI unit of electric current. How is an ammeter connected in a circuit?

SECTION C: NUMERICALS & DIAGRAMS (3 MARKS EACH)

Q7. An object $5\text{ cm}$ high is placed at a distance of $20\text{ cm}$ in front of a convex mirror of radius of curvature $30\text{ cm}$. Find the position, nature, and size of the image.

Q8. (a) Draw a ray diagram to show the formation of an image by a concave mirror when the object is placed at C.

(b) List two properties of the image formed.

Q9. (a) What is a Solenoid?

(b) Draw the magnetic field lines around a current-carrying solenoid.

SECTION D: LONG ANSWER QUESTIONS (5 MARKS EACH)

Q10. (a) State Ohm’s Law and write its mathematical expression.

(b) Calculate the equivalent resistance when three resistors of $2\Omega, 3\Omega,$ and $6\Omega$ are connected in parallel.

(c) Why are copper wires used for electricity transmission?

Q11. (a) Explain the cause of "Myopia" (Nearsightedness).

(b) How can this defect be corrected? Draw a diagram showing the correction.

(c) Why does the sun appear reddish early in the morning?

SECTION E: CASE-BASED QUESTIONS (4 MARKS)

Q12. Case Study: Atmospheric Refraction

The twinkling of stars is due to the atmospheric refraction of starlight. The starlight, on entering the earth’s atmosphere, undergoes refraction continuously before it reaches the earth.

  1. Why don't planets twinkle? (1M)

  2. What is the reason for the "Advanced Sunrise" and "Delayed Sunset"? (1M)

  3. Explain the phenomenon of dispersion of light through a glass prism. (2M)

✅ ANSWER KEY & QUICK SOLUTIONS

  • Q1: (b) Positive magnification $>1$ only occurs for a virtual, erect image in a concave mirror.

  • Q2: (c) Speed of light is inversely proportional to refractive index ($v = \frac{c}{n}$). Lowest $n$ (1.33) has the highest speed.

  • Q3: (c) $P = I^2R$. If $I$ is doubled, $P$ becomes $(2I)^2 = 4I^2$.

  • Q7 (Hint): $u = -20\text{ cm}, R = +30\text{ cm} \implies f = +15\text{ cm}$. Use $\frac{1}{f} = \frac{1}{v} + \frac{1}{u}$.

  • Q10 (b): $\frac{1}{R_p} = \frac{1}{2} + \frac{1}{3} + \frac{1}{6} = \frac{3+2+1}{6} = \frac{6}{6} = 1\Omega

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