CUET · PHYSICS · PYQ PAPER 2025
The resistivity of the material of a wire of length 15 m, area of cross-section \( 6 \times 10^{-7} \text{ m}^2 \) and resistance 10 \(\Omega\) will be
- A \( 4 \times 10^{-7} \, \Omega\text{ m} \)
- B \( 2 \times 10^{-7} \, \Omega\text{ m} \)
- C \( 3 \times 10^{-7} \, \Omega\text{ m} \)
- D \( 5 \times 10^{-7} \, \Omega\text{ m} \)
Answer & Solution
Correct Answer
(A) \( 4 \times 10^{-7} \, \Omega\text{ m} \)
Step-by-step Solution
Detailed explanation
\( \rho = \frac{R \cdot A}{L} \) \( \rho = \frac{10 \, \Omega \cdot 6 \times 10^{-7} \text{ m}^2}{15 \text{ m}} \) \( \rho = 4 \times 10^{-7} \, \Omega\text{ m} \)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- The ratio of intensities of two waves is 16:1. If these two are superimposed, What is the ratio of maximum and minimum intensities?CUET 2023 Hard
- Which of the following statements are true for the minimum deviation position of a prism?
(A). The angle of the prism is twice the angle of refraction.
(B). The refracted ray is parallel to the base of prism.
(C). The angle of incidence is equal to the angle of emergence.
(D). The angle of deviation is half the angle of a prism.
Choose the correct answer from the options given below:CUET 2025 Easy - In a feedback amplifier, if the feedback voltage is in opposite phase, the gain is less than 1. Then it will:CUET 2023 Easy
- An electron (mass \(9 \times 10^{-31} \text{ kg}\) and charge \(1.6 \times 10^{-19} \text{ C}\)) moving with a speed of \(5.0 \times 10^7 \text{ m/s}\) enters a region of uniform magnetic field of strength 0.04 T which is perpendicular to its velocity. The radius of the circular path it follows is:CUET 2025 Medium
- Match List - I with List - II.
List - I (Electronic Device) List - II (Application) (A) Zener diode (I) Rectifier (B) Capacitor (II) Amplifier (C) Transistor (III) Voltage regulator (D) p-n junction diode (IV) Filter circuit
Choose the correct answer from the options given below :CUET 2023 Hard - There are four particles A, B, C and D with the same mass and equal kinetic energy K. If the kinetic energy of particle A becomes 4 K, B becomes 9 K, C becomes 64 K and D becomes 16 K times, respectively, the fractional change in the de Broglie wavelength of the particles arranged in increasing order isCUET 2025 Hard
More PYQs from CUET
- The unit of Boiling point Elevation Constant (\(K_b\)) isCUET 2025 Hard
- \(\text{Ni}^{2+}\) in \([\text{NiCl}_2(\text{H}_2\text{O})_4]\) and \(\text{Fe}^{3+}\) in \([\text{Fe}(\text{CN})_6]^{3-}\) are called:CUET 2023 Easy
- Match List-l with List-II
Choose the correct answer from the options given below :List-l (Complex) List-II (Property) (A) Fuel Cell (I) Anode: \(Zn (s) \rightarrow Zn ^{2+}+2 e^{-}\)
Cathode: \(MnO _2+ NH _4^{+}+e^{-} \rightarrow MnO ( OH )+ NH _3\)(B) A secondary cell (II) Cathode: \(O _2(g)+2 H _2 O (l)+4 e^{-} \rightarrow 4 OH ^{-}(a q)\)
Anode: \(2 H _2(g)+4 OH ^{-}(a q) \rightarrow 4 H _2 O (l)+4 e^{-}\)(C) Mercury cells (III) \(Pb (s)+ PbO _2(s)+2 H _2 SO _4(a q) \rightarrow 2 PbSO _4(s)+2 H _2 O (l)\) (D) Leclanche cell (Simplified) \((I V) Zn ( Hg )+ HgO (s) \rightarrow ZnO (s)+ Hg (l)\) CUET 2025 Easy - Read the passage carefully. Attempt the questions.
In our body, cell growth and differentiation is highly controlled and regulated. In cancer cells, there is breakdown of these regulatory mechanisms. Cancerous cells just continue to divide giving rise to masses of cells called tumors. Benign tumors normally remain confined to their original location. The malignant tumors, on the other hand are a mass of proliferating cells. These cells actively divide and starve the normal cells by competing for vital nutrients. Cells sloughed from such tumors reach distant sites through blood, and wherever they get lodged in the body, they start a new tumor there. This property is called metastasis. Transformation of normal cells into cancerous cells may be induced by physical, chemical or biological agents called carcinogens.
Cancer is caused by:
A. Carcinogens
B. Protein rich foods
C. Primary lymphocytes
D. Oncogenes
Choose the correct answer from the options given below:CUET 2023 Medium - An unbiased die is rolled. If the random variable \(X\) is defined as,
\(X=\left\{\begin{array}{ll}1 & \text { if the outcome is a number less than or equal to } 3 \\0 & \text { if the outcome is a number greater than } 3\end{array}\right.\)
Then the probability distribution of \(X\) is :CUET 2023 Medium - Arrange the given steps for regulation of gene expression in correct sequence?
(A) Regulation of splicing
(B) Transport of mRNA from the nucleus to the cytoplasm
(C) Translation
(D) Formation of primary transcript (Transcription)
Choose the correct answer from the options given below:CUET 2025 Medium