CUET · PHYSICS · PYQ PAPER 2025
The susceptibility of a paramagnetic material is \( \chi \) at \( 27^\circ \text{C} \). At what temperature will its susceptibility be \( \chi/3 \)?
- A \( 900^\circ \text{C} \)
- B \( 627^\circ \text{C} \)
- C \( -173^\circ \text{C} \)
- D \( 100^\circ \text{C} \)
Answer & Solution
Correct Answer
(B) \( 627^\circ \text{C} \)
Step-by-step Solution
Detailed explanation
\(T_1 = 27 + 273 = 300 \text{ K}\) \(\chi T = \text{constant}\) \(\chi_1 T_1 = \chi_2 T_2\) \(\chi \cdot 300 = (\chi/3) T_2\) \(T_2 = 3 \cdot 300 = 900 \text{ K}\) \(T_2 = 900 - 273 = 627^\circ \text{C}\)
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
- In a moving coil galvanometer, the coil is wound over a metallic frame in order toCUET 2025 Hard
- At an instant of time, a magnetic field is applied along the velocity of the particle. The acceleration produced in the particle will beCUET 2025 Medium
- A small piece of metal wire is dragged in the region of magnetic flux \( 8 \times 10^{-4} \, \text{Wb} \) in 0.5 s. The length of the wire is perpendicular to the magnetic field. The emf induced in the wire would be:CUET 2025 Medium
- The energy of a photon of wavelength 1 \( \text{\AA} \) is
(Given: \( h = 6.63 \times 10^{-34} \text{ J s} \))CUET 2025 Hard - An ac source has a frequency of 60 Hz. The time taken for the voltage to change from peak value to zero is :CUET 2023 Medium
- The refractive indices of glass and water are 3/2 and 4/3, respectively. If light passes from glass to water, the critical angle isCUET 2025 Easy
More PYQs from CUET
- Match List-l with List-ll
Let A and B be any two events
Choose the correct answer from the options given below :List-l List-ll (A) \(P \left( A ^{\prime}\right)\) (I) \(\frac{P(A \cap B)}{P(A)} ; P(A) \neq 0\) (B) \(P (\Phi)\) (II) \(\frac{P(A \cap B)}{P(B)} ; P(B) \neq 0\) (C) \(P ( A \mid B )\) (III) \(1-P(A)\) (D) \(P ( B \mid A )\) (IV) \(0\) CUET 2025 Medium - If A is a non-identity invertible symmetric matrix, then \(A^{-1}\) is:CUET 2023 Easy
- There are two values of a for which the determinant, \(\Delta = \begin{vmatrix} 1 & -2 & 5 \\ 0 & a & -1 \\ 0 & 4 & 2a \end{vmatrix} = 86\), then the sum of these values of a is:CUET 2023 Easy
- Match List I With List II
List I List II A. \(\frac{d^2 y}{d x^2}=\left(\frac{d y}{d x}\right)^{\frac{3}{2}}\) I. order + degree \(=2\) B. \(2\left(\frac{d^3 y}{d x^3}\right)^2+3\left(\frac{d^2 y}{d x^2}\right)+y\left(\frac{d y}{d x}\right)^2=e^x\) II. order + degree \(=3\) C. \(\frac{d y}{d x}+\frac{1}{d y / d x}=3\) III. order + degree \(=4\) D. \(\frac{d y}{d x}+x^2=5\) IV. order + degree \(=5\) CUET 2023 Medium - Sporozoites of Plasmodium are formed in ______ of female Anopheles mosquito.CUET 2023 Hard
- Arrange the given stages involved in replication of retrovirus.
(A) New viral RNA is produced by the infected cell
(B) Viral DNA is produced by reverse transcriptase
(C) Viral DNA is incorporated into host genome
(D) Viral RNA is introduced into animal cell
Choose the correct answer from the options given below:CUET 2025 Hard