WBJEE Physics Answer Key 2025: Did you participate in the West Bengal Joint Entrance Exam? The West Bengal Entrance Examination Board(WBJEEB) concluded the engineering entrance for the Physics paper successfully at 4 PM. With the conclusion of the exam, our experts have prepared correct responses to the Physics questions to help candidates learn about the correct answers. Till the official provisional answer keys are released, students can chcek the unofficial keys from this page.
Answer keys can be a vital resource for candidate in analysing their performance before the results. As per the exam analysis, the Physics paper was divided into three categories; category 1 contained 30 questions, and 5 questions each in categories 2 and 3.
To assume a raw score, refer to WBJEE Physics unofficial answer key 2025 provided here.
Also Read: WBJEE Physics Expected Weightage 2025: Total Number of Questions
WBJEE Unofficial Answer Keys 2025 for Physics Paper
Candidates who remembered the responses recorded in the exam can use WBJEE Physics answer key 2025(unofficial) to predict their raw score. We have provided the correct responses for the Physics question in the table below:
| Questions | Answers |
| Q1) For a domestic AC supply of 220V at 50 cycles per sec, the potential difference between the terminals of a two-pin electric outlet in a room is given by |
A) V(t)=220√2Cos(100πt) |
| Q2) Which logic gate is represented by the following combinations of logic gates? |
B) AND |
| Q3) The resistance R=V/I where V=(25+-0.4) volt and I=(200+-3) ampere. The percentage error in R is |
C)3.1% |
| Q4) The de Broglie wavelength of a moving bus with speed v is λ. Some passengers left the bus at a stoppage. Now when the bus moves twice its initial speed, its kinetic energy is found to be twice its initial value. What is the de Broglie wavelength of the bus now? |
A) λ |
| Q5) Manufacturers supply a zener diode voltage Vz=5.6V and maximum power dissipation Pz,max=1/4V. This zener diode is used in a circuit. Calculate the maximum value of resistance Rs in the circuit so that the Zener diode will not burn when the input voltage is Vin=10V |
A) 98.56 |
| Q6) An electron in a Hydrogen atom jumps from the second Bohr orbit to the ground state, and the difference between the energies of the two states is radiated in the form of a photon. This photon strikes a material. If the work function of the material is 4.2 eV, then the stopping potential is(Energy of electron in n-th orbit 13.6/n2 eV |
C) 6V |
| Q7) A simple pendulum is taken at a place where its distance from the Earth's surface is equal to the radius of the Earth. Calculate the time period of small oscillations if the length of the string is 4m. |
C) 8s |
| Q8) The minimum wavelength of Lyman series lines is P, then the maximum wavelength of these lines is |
A) 4P/3 |
| Q9) A piece of granite floats at the interface of mercury and water contained in a beaker, as in the figure. If the densities of granite, water, and mercury are p, p1, and p2, respectively, the ratio of the volume of granite in water to the volume of granite in mercury is |
A) p2-p/p-p1 |
| Q10) The apparent coefficient of expansion of a liquid, when heated in a copper vessel, is C, and when heated in the silver vessel, is S. If A is the linear coefficient of expansion of copper, then the linear coefficient of expansion of silver is |
B) C+3A-S/3 |
| Q11) A wave disturbance in a medium is described by y(x,t)=0.02 cos(50πt+π/2) cos(10πx) x,y are in meters and t is in seconds. Which statement is/are correct |
A, B, and D |
| Q12) If the dimensions of length are expressed as GxCyhz, where G, C, and h are the universal gravitational constant, speed of light, and Planck's constant, respectively, then |
B and D |
Benefits of WBJEE Physics Answer Key 2025
Referring to WBJEE Physics answer key 2025 PDF can offer the following advantages to the students:
- Candidates can learn about the correct responses to the memory-based questions asked in WBJEE physics paper.
- Unofficial answer keys can offer an extensive scope for self-evaluation of their performance before the result declaration.
- A fair idea regarding the performance can help students make an informed decision.