CUET · PHYSICS · PYQ PAPER 2025

With the rise in temperature, the electrical resistance

A increases for a conductor and a semiconductor
B decreases for a conductor and a semiconductor
C increases for a conductor and decreases for a semiconductor
D decreases for a conductor and increases for a semiconductor

Verified Solution

Answer & Solution

Correct Answer

(C) increases for a conductor and decreases for a semiconductor

Step-by-step Solution

Detailed explanation

Conductors (Metals): As temperature rises, the atoms in the metal lattice vibrate more vigorously. These vibrations increase the frequency of collisions between the flowing electrons and the atoms, which hinders the current and increases resistance. Semiconductors: In these…

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

Explore more questions on app

From CUET

Match List-l with List-ll

List-l (Organisms)	List-II (Products/Bioactive molecule)
(A) Trichoderma polysporum	(I) Citric acid
(B) Monascus purpureus	(II) Cyclosporin A
(C) Aspergillus niger	(III) Ethanol
(D) Saccharomyces cerevisiae	(IV) Statins

Choose the correct answer from the options given below:

CUET 2025 Medium

Explore more questions on app

List-I	List-II
(A) NBA sin\(\omega\)t	(I) Blv
(B) Joule's loss of heat	(II) Mutual Inductance
(C) Motional emf	(III) \(\frac{B^2l^2v^2}{R}\)
(D) \(\mu_r\) \(\mu_0 n_1 n_2 \pi r^2 l\)	(IV) A.C. Generator