Tamil Nadu 12th Physics Answer Key 2025 (Available): Detailed Exam Analysis

Tamil Nadu 12th Physics Answer Key 2025: Detailed Exam Analysis

Tamil Nadu 12th Physics Answer Key 2025 is available here (Image credits: pexels.com).

Tamil Nadu 12th Physics Answer Key 2025: The Directorate of Government Examinations (DGE) held the Class 12th Physics Exam today, March 25, 2025. As scheduled, the exam was conducted from 10:00 AM to 1:15 PM. Students awaiting to analyze their performance and calculate their probable marks can check the Tamil Nadu 12th Physics Answer Key 2025 along with the detailed exam analysis provided below. The Tamil Nadu 12th Physics Exam was conducted for 70 marks. The question paper included four sections - A, B, C, and D. Students can evaluate their overall performance through the Tamil Nadu Class 12th Physics Answer Key and Question Paper Analysis 2025.

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Tamil Nadu 12th Physics Answer Key 2025 (Available)

The Tamil Nadu 12th Physics Question Paper 2025 included MCQs, very short, short, and long answer type questions.While answering all questions was compulsory, students were given internal choices. Students can cross-check their answers with the Tamil Nadu 12th Physics Unofficial Answer Key 2025, prepared by the subject experts.

Questions	Answers
1. Calculate the distance upto which ray optics is a good approximation for light of wavelength 500 nm falls on an aperture of width 0.5 mm.	(c) 25 cm
2. The transverse nature of light is shown in :	(c) Polarisation
3. If a material having intensity of magnetisation 500 Am - 1 is placed in a magnetising field of 1000 Am-1, then the susceptibility of the material is :	(d) 0.5
4. In a transformer, the number of turns in the primary and the secondary are 410 and 1230 respectively. If the current in primary is 6 A, then that in the secondary coil is	(b) 2A
5. A thin conducting spherical shell of radius R has a charge Q which is uniformly distributed on its surface. The correct plot for electrostatic potential due to this spherical shell is :	(d)
6. In photoelectric emission, a radiation whose frequency is 4 times threshold frequency of a certain metal is incident on the metal. Then, the maximum possible velocity of the emitted electron will be :	(d) √6hν0/m
7. "Ski wax" is an application of nano product in the field of :	(a) sports
8. An electric dipole is placed at an alignment angle of 30° with an electric field of 2x10⁵ NC^-1 . It experiences a torque equal to 8 Nm. The charge on the dipole if the dipole length is 1 cm is :	(d) 8mC
9. For light incident from air on a slab of refractive index 2, the maximum possible angle of refraction is :	(b) 30°
10. First diffraction minimum due to a single slit of width 10x10-5 cm is at 30°. Then wavelength of light used is :	(d) 500 Å
11. To obtain sustained oscillation in an oscillator	(d) All of the above
12. The dimension of 1/ω₀ε₀ is:	(d) L² T^-2
13. In Joule's heating law, when R and t are constant, if the H is taken along the y-axis and I? along the x-axis, the graph is	(b) Straight line
14. A radioactive element has No number of nuclei at t = 0. The number of nuclei remaining after half of a half-life that is, ( T= 1/2 T_1/2) is:	(d) N₀/√2
15. In the combination of the following gates, write the Boolean equation for output Y in terms of input A, B, C.	(c) Ā+B+C

Tamil Nadu 12th Physics Detailed Exam Analysis

The Tamil Nadu 12th Physics Exam Analysis includes the overall and section-wise difficulty level of the question paper.It also shows the number of good attempts and whether the Tamil Nadu 12th Physics Question Paper was lengthy. This helps the students analyze their performance compared to other students.

Particulars	Details
Overall Difficulty Level	Moderate
Section A Difficulty Level	Easy
Section B Difficulty Level	Easy to Moderate
Section C Difficulty Level	Easy to Moderate
Section D Difficulty Level	Moderate
Number of Good Attempts	58+
Was the Paper Lengthy?	Section C was lemgthy (Mixed Reactions)