โก 12th Physics Important Five Mark Questions โ Public Exam 2025
๐ Master 5-Mark Questions to Score High in Physics!
Prepare for the 12th Physics Public Exam 2025 with chapter-wise important five mark questions, curated from previous year board exam papers. These short-answer questions help students revise key concepts and improve exam performance.
๐น Chapter-wise 5-mark questions with answers
๐น Based on Tamil Nadu Board syllabus
๐น Covers key topics: Mechanics, Electromagnetism, Optics & Modern Physics
๐น Essential for scoring full marks in the Physics exam
Chapter 1 : Electrostatics
- Electric field due to a dipole a) Axial line b) Equatorial line pg : 22
- Electrostatic Potential at a point due to electric dipoleย Pg : 30
- Applications of Gauss law (4 cases) : Pg : 41
- Vandegraff Generator : Pg : 66
Chapter 2 : Current Electricity
- Microscopic model of current? Pg : 85
- Wheatstone Bridge ? 106
- Meter Bridge ? 108
- Comparison of emf of two cells with a potentiometer ?
- Internal resistance of a cell using Potentiometer ? 111
- Internal resistance of a cell using voltmeter?
Chapter 3 : Magnetism and magnetic effects of electric current
- Magnetic field due to long straight conductor carrying current
- Magnetic Field Produced along the axis of circular coil Pg . 157
- Moving coil galvanometer
- Discuss the working of cyclotron?
Ln4 : Electromagnetic Induction And Alternating Current
- Self induction / Mutual Induction between two long coaxial solenoids Pg : 215
- Induction of Emf by changing orientation of coil with magnetic field Pg : 221
- Explain the Construction and working of a Transformer ? Pg : 228
- Explain the various energy loses in a Transformer ? 2295.Find out the Phase relationship between voltage and current in a pure inductive circuit ? 239
- Find out the Phase relationship between voltage and current in a pure capacitive circuit ? 241
- Find out the Phase relationship between voltage and current in a RLC series ? Pg : 244
Chapter 5: Electromagnetic waves
- Write down maxwell equations in integral form (4 equations)ย Pg : 270
- Properties of Electromagnetic waves Pg : 272
- Types of spectrum Pg : 277 a) Explain the types of emmision spectrum b) Explain the types of absorption spectrum
Chapter 6 : Ray Optics
- Derive Mirror Equation?Pg No.8
- Describe the Fizeauโs method to determine speed of light. Pg No.11
- Obtain lens makerโs formula and mention its significance. Pg No.30
- Angle of deviation produced by the prism? Pg No.38
Chapter 7 : Wave Optics
- Youngโs double slit experiment , equation of path difference & Equation for bandwidth . Pg No. 63,64
- Prove laws of reflection using huygen’s Priciple? Pg No. 56
- Prove laws of refraction using huygen’s Priciple? Pg No. 56
- Discuss the diffraction at single slit and obtain the condition for the nth minimum?
Chapter 10 : Dual Nature of Radiation and Matter
- Explain variuos methods of electron emmision? Pg No. 110,111
- Explain Einstein’s Photoelectric equation? Pg No. 119
- Photo electric cell and their application? Pg No.121
- Davisson and germer experiment? Pg No.125
- Briefly explain the principle and working of electron microscope. Pg-126
Chapter 9 : Atomic and Nuclear physics
- Explain the J.J. Thomson experiment to determine the specific charge of electron. Pg No 143
- Discuss the Millikanโs oil drop experiment to determine the charge of an electron.Pg No 145
- Derive the equation for radius of the orbit of the electron? Pg No. 153
- Derive the equation for the energy of an electron in the nth orbit? Pg No.155
- Explain spectral lines of hydrogen atom(Lyman series to Pfund series) Pg No. 162
- Obtain law of radioactivity or radio activity decay? Pg No.173
- Describe the working of nuclear reactor with a block diagram. Pg No 182
- Discuss the alpha decay process with an example?
Chapter 10 : Electronics and Communication
- Explain the construction and working of a half wave rectifier? Pg No. 207
- Explain the construction and working of a full wave rectifier? Pg No. 208
- Sketch the static characteristics of a common emitter transistor and bring out the essence of input and output characteristics? Pg No. 219
- State and prove Demorgan’s first and second theorem? Pg No.231,232
- Explain transistor as a switch?Pg No 222
- Explain transitor as an amplifier,sketch the input and output wave forms?
Chapter11 : Recent Developments in Physics
- Discuss the applications of Nanomaterials in various fields. Pg No. 260
- Discuss the functions of key components in Robots. Pg No.-264
- Comment on the recent advancement in medical diagnosis and therapy. Pg No. 270-274
Other Use full links
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๐ Quick Links for Exam Success:
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๐ฏ Why Focus on 5-Mark Questions in 12th Physics?
Two-mark questions are an important scoring section in the Physics public exam, covering definitions, formulas, derivations, and key concepts. These questions help students secure easy marks with minimal effort.
๐ Chapter-wise 5-Mark Questions Covered:
๐น Mechanics โ Laws of Motion, Work, Energy, Rotational Motion
๐น Electromagnetism โ Electrostatics, Current Electricity, Magnetic Effects of Current
๐น Optics & Waves โ Reflection, Refraction, Wave Optics, Sound Waves
๐น Modern Physics โ Dual Nature of Matter, Nuclear Physics, Semiconductor Electronics
๐ข More 12th Chemistry Exam Resources:
๐ 12th chemistry important two marks public exam 2025
๐ 12th chemistry important three marks public exam 2025
๐ 12th chemistry important five marks public exam 2025
๐ข External References for Physics Exam Preparation:
๐ 12th physics One mark shortcuts 2025
๐ 12th physics score 90+ study plan 2025
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