CUET · PHYSICS · PYQ PAPER 2025
In the given figure, the ratio of electric fluxes through surfaces \( S_1 \) and \( S_2 \) is
- A \(1: 3\)
- B \(1: 6\)
- C \(1: 7\)
- D \(1: 2\)
Answer & Solution
Correct Answer
(C) \(1: 7\)
Step-by-step Solution
Detailed explanation
\(\left(Q_1\right):+2 Q+(-Q)=+Q\) \(S_2(+3 Q,+4 Q\), and \(-Q)\). \(\left(Q_2\right):(+2 Q-Q)+(+3 Q+4 Q-Q)\) = \(1 Q+6 Q=+7 Q\) \(\left(\Phi_2\right): \frac{7 Q}{e_0}\) \(\frac{\Phi_1}{\Phi_2}=\frac{Q / \epsilon_0}{7 Q / \epsilon_0}=\frac{1}{7}\) 1 : 7.
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 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
- A cylindrical, straight long wire having radius 'a' is carrying current 'I' uniformly distributed inside the wire. As per Ampere's circuital law, the magnetic field inside the wire at any distance r, (r < a) is given by:CUET 2025 Medium
- If \( n_h \) is the number of holes per unit volume and \( n_e \) is the number of conduction electrons per unit volume in an extrinsic semiconductor. The relation between \( n_h, n_e \) and \( n_i \) is (\( n_i \) is intrinsic carrier concentration):CUET 2023 Medium
- The stopping potential of photo-electrons depends upon:CUET 2025 Medium
- What are the respective numbers of \( \alpha \) and \( \beta \) particles emitted respectively in the following radioactive decay?
\( {}^{200}_{90}X \rightarrow {}^{168}_{80}Y \)CUET 2023 Medium - A transformer has 4000 turns in primary and 100 turns in secondary coils. The primary coil in connected to a 240 V and secondary to a bulb of 1.2 \(\Omega\) resistance. The current in the bulb is :CUET 2023 Easy
More PYQs from CUET
- What amount of bromine will be required to convert \(6 g\) of phenol into 2,4,6-tribromophenol?CUET 2023 Hard
- Match List-I with List-II
Choose the correct answer from the options given below:LIST – I (Electrolytes) LIST – II (Examples) (A) Non-electrolyte (I) Sucrose, urea (B) Binary electrolyte (II) KCl, \(CH _3 COOH\) (C) Quaternary electrolytes (III) \(H _2 SO _4\) \(BaCl _2\) (D) Ternary electrolyte (IV) \(AlCl _3\) \(K _3 PO _4\) CUET 2025 Hard - The focal length of the objective of a microscope is \( f_o \) and that of the eye piece is \( f_e \). The aperture of objective is \( d_o \) and that of eye piece is \( d_e \). Which of the following relation is correct ?CUET 2023 Hard
- Which one of the given assisted reproductive technologies (ART) involves transfer of fertilized egg into the fallopian tube?CUET 2025 Hard
- Taylor and colleagues proved semiconservative nature of DNA through their experiments on Vicia FabaCUET 2023 Medium
- Which of the following phenomenon can be explained by the wave picture of light
A. Photo-electric effect
B. Compton effect
C. Polarisation
D. Diffraction
Choose the correct answer from the options given below:CUET 2023 Hard