CUET · PHYSICS · PYQ PAPER 2025

A real and smaller image of an object will be produced by

A a concave mirror, when the object is placed beyond 2F
B a convex mirror, when the object is placed between the Pole and the principal focus F
C a concave mirror, when the object is placed between the center of curvature (R) and F
D a convex mirror, when the object is placed beyond 2F

Verified Solution

Answer & Solution

Correct Answer

(A) a concave mirror, when the object is placed beyond 2F

Step-by-step Solution

Detailed explanation

Convex Mirrors (B & D): These always produce virtual, erect, and diminished images, regardless of object position. Concave Mirror (A & C): When the object is placed beyond \(2 F\) (center of curvature), the reflected rays converge between \(F\) and \(2 F\) to form a real,…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match List-I with List-II (here symbols have their usual meanings)

List-I (Physical Quantity / Law)	List-II (Formula)
(A) Snell's law	(I) \( t/\mu \)
(B) Apparent Shift	(II) \( c/v \)
(C) Refractive Index	(III) \(\frac{\mu_2}{\mu_1}\)
(D) Apparent depth	(IV) \( t(1 - \frac{1}{\mu}) \)

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A network of resistors is connected as shown in the figure. The potential drop across 4\(\Omega\) resistors is

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