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Class 12th Physics Chapter 10 Wave Optics VVI Objective Question Wave Optics 1. Electromagnetic wave can be Polarised by (A) a lens (B) a mirror (C) a polaroid (D) a prism Answer:- C 2. Bonding of light rays at sharp obstacles is called : (A) Refraction (B) Diffraction (C) Interference (D) Polarisation Answer:- B 3. If […]
Class 12th Physics Chapter 8 Electro-Magnetic Waves VVI Objective Question Electro-Magnetic Waves 1. Which has the longest wavelength? (A) Radio waves (B) X-rays (C) Ultraviolet rays (D) Infrared Answer:- A 2. Which of the following has a minimum wavelength? (A) X-Rays (B) Y-Rays (C) Micro Wave (D) Radio wave Answer:- B 3. The frequency range of […]
Class 12th Physics Chapter 6 Electromagnetic Induction VVI Objective Question ELECTROMAGNETIC INDUCTION 1. Unit of self-induction is (A) Weber Title (B) Ohm (C) Henry (D) Gauss Answer:- C 2. The direction of eddy current is obtained using (A) Kirchhoff’s laws (B) Lenz’s law (C) Planck’s law (D) none of these Answer:- B 3. Lenz’s law is […]
Class 12th Physics Chapter 5 Magnetism & Matter VVI Objective Question Magnetism And Matter 1. SI unit of magnetic flux is : (A) Ohm (B) Weber (C) Tesla (D) None of these Answer:- B 2. Copper is (A) Paramagnetic (B) Ferromagnetic (C) Diamagnetic (D) Semi-conductor Answer:- C 3. Which of the following has greater susceptibility […]