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| Classwise Science MCQ Questions with Solutions (Class 12th) | ||||||||||||||
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Class 12th Physics MCQ Questions
1. Electric Charges And Fields
This chapter lays the foundation of electrostatics, introducing electric charge, its properties, and the force between charges, which is quantified by Coulomb's Law. It develops the crucial concept of the electric field ($\vec{E}$) and introduces Gauss's Law as a powerful tool for its calculation. To test your understanding of these fundamental principles, this section provides a set of Multiple-Choice Questions (MCQs) covering all key topics from the chapter.
2. Electrostatic Potential And Capacitance
This chapter explores the energy aspects of electrostatics through the concepts of electrostatic potential ($V$) and capacitance ($C$). It details the analysis of capacitors, their combinations, the effect of dielectrics, and the energy stored within them. Assess your knowledge of potential and capacitance by solving the MCQs available through the link for this chapter.
3. Current Electricity
This chapter shifts from static charges to charges in motion, defining electric current. The fundamental relationship governing circuits, Ohm's Law ($V = IR$), and Kirchhoff's laws for network analysis are central themes. Challenge your problem-solving skills in circuit analysis by attempting the Multiple-Choice Questions provided in this section.
4. Moving Charges And Magnetism
This chapter unveils the connection between electricity and magnetism, establishing that moving charges produce magnetic fields. It introduces the Lorentz force and provides tools like the Biot-Savart Law and Ampere's Circuital Law to calculate magnetic fields. To help you master these important concepts, this section offers a range of MCQs for practice.
5. Magnetism And Matter
This chapter explores magnetism as a property of matter, covering Earth's magnetism and the classification of magnetic materials into diamagnetic, paramagnetic, and ferromagnetic. It explains their behavior based on microscopic structure and Curie's Law. Evaluate your understanding of these material properties by answering the MCQs provided for this chapter.
6. Electromagnetic Induction
This chapter introduces the phenomenon of electromagnetic induction (EMI), where a changing magnetic field induces a current. The principles are quantified by Faraday's laws and the direction is given by Lenz's Law. It also covers inductance and the working of the AC generator. Test your ability to apply these laws by attempting the set of MCQs designed for this chapter.
7. Alternating Current
This chapter provides a detailed analysis of circuits with Alternating Current (AC). It covers the behavior of R, L, and C components, the series LCR circuit, and key concepts like impedance ($Z$) and resonance. It also explains the working of a transformer. Test your knowledge of AC circuits with the set of MCQs available for this chapter.
8. Electromagnetic Waves
This chapter unifies electricity and magnetism, presenting electromagnetic (EM) waves as predicted by Maxwell's equations. It provides a comprehensive overview of the entire electromagnetic spectrum, from radio waves to gamma rays, and their diverse applications. Assess your understanding of EM waves by solving the MCQs provided in this section.
9. Ray Optics And Optical Instruments
This chapter, also known as geometric optics, covers the phenomena of reflection and refraction. It details image formation by spherical mirrors and lenses, using the mirror and lens formulae. It also explains Total Internal Reflection and the working of optical instruments like microscopes and telescopes. To deepen your understanding of ray optics, this section provides a range of MCQs.
10. Wave Optics
This chapter explores phenomena that demonstrate the wave nature of light, using Huygens' principle. The core focus is on the principle of superposition, which explains interference (as shown in Young's double-slit experiment), diffraction, and polarization. To practice these wave phenomena, attempt the set of MCQs available through the link for this chapter.
11. Dual Nature Of Radiation And Matter
This chapter introduces the revolutionary concept of wave-particle duality. It discusses the photoelectric effect, explained by Einstein's photon theory, and de Broglie's hypothesis ($\lambda = h/p$), which attributes a wavelength to matter particles. Reinforce your understanding of these foundational quantum concepts by answering the MCQs linked here.
12. Atoms
This chapter focuses on the structure of the atom, with a primary emphasis on the Bohr model for the hydrogen atom. It explains Bohr's postulates of quantized energy levels and how they account for the discrete line spectra of hydrogen, including the various spectral series. Have fun testing your knowledge of atomic structure with the interactive MCQs provided for this chapter.
13. Nuclei
This chapter delves into the physics of the atomic nucleus. It explains concepts of mass defect, binding energy, and the phenomenon of radioactivity, including the law of radioactive decay and half-life. It also explores the immense energy released in fission and fusion. Challenge yourself with MCQs on nuclear physics by clicking the link for this chapter.
14. Semiconductor Electronics: Materials, Devices And Simple Circuits
This chapter introduces the physics of semiconductors, the materials that power modern electronics. It explains the concept of doping to create p-type and n-type materials and focuses on the characteristics of a p-n junction. It covers key devices like the p-n junction diode and fundamental logic gates. Evaluate your understanding of semiconductor devices by answering the MCQs provided for this chapter.