Q.1. Ferrites may be:(a) ant. ferromagnetic(b) ferromagnetic(c) ferrimagnetic(d) None of the above Answer (b) ferromagnetic Q.2. The magnetic lines of force inside a bar magnet:(a) do not exist(b) depends on area of cross-section of bar magnet(c) are from N-pole to S-pole of the magnet(d) are from S-pole to N-pole of the magnet. Answer (d) are … Read more
Physics MCQs for Class 12 Chapter 9 Ray Optics and Optical Instruments Here we are providing MCQ Questions for Class 12 Physics Chapter 9 Ray Optics and Optical Instrument. Q.1. Which of the following colour of white light deviated most when passes through a prism?(a) Red light(b) Violet light(c) Yellow light(d) Both (a) and (b) … Read more
MCQs on Class 12 Physics Chapter 8 Electromagnetic Waves Q.1. In electromagnetic waves the phase difference between electric and magnetic field vectors are(a) zero(b) 𝜋/4(c) 𝜋/2(d) π Answer Answer: (a) Electric and magnetic field vectors always vary in same phase. Q.2. Which of the following has minimum wavelength? (a) Blue light(b) γ-rays(c) infrared rays(d) microwave Answer Answer: … Read more
MCQs based on Alternating Current: Q.1. In general in an alternating current circuit(a) the average value of current is zero(b) the average value of square of the current is zero(c) average power dissipation is zero(d) the phase difference between voltage and current is zero Answer Answer: (a) Q.2. The frequency of A.C. mains in India … Read more
MCQs based on Electromagnetic Induction: Q.1. Whenever the magnetic flux linked with an electric circuit changes, an emf is induced in the circuit. This is called(a) electromagnetic induction(b) lenz’s law(c) hysteresis loss(d) kirchhoff’s laws Answer Answer: (a) Q.2. In electromagnetic induction, the induced charge is independent of(a) change of flux(b) time.(c) resistance of the coil(d) … Read more
MCQs based on Current Electricity: Q.1. In a current carrying conductor the net charge is(a) 1.6 x 10–19 coulomb (b) 6.25 x 10–18 coulomb(c) zero (d) infinite Answer Answer: (c) Explanation: In a current carrying conductor, the net charge is zero. Q.2. The current which is assumed to be flowing in a circuit from positive … Read more
1. A positively charged particle is released from rest in an uniform electric field. The electric potential energy of the charge [NCERT Exemplar](a) remains a constant because the electric field is uniform.(b) increases because the charge moves along the electric field.(c) decreases because the charge moves along the electric field.(d) decreases because the charge moves … Read more
Q.1. The locus of all particles in a medium, vibrating in the same phase is called(a) wavelet(b) fringe(c) wave front(d) None of these Answer Answer: (c) Q.2. Which of the following is correct for light diverging from a point source?(a) The intensity decreases in proportion for the distance squared.(b) The wavefront is parabolic.(c) The intensity … Read more
Q.1. Cathode ray consists of(a) photons (b) electrons(c) protons (d) α-particles Answer Answer: (b) Cathode ray consists of electrons Q.2. A discharge takes place between the two electrodes on applying the electric field to the gas in the discharge tube. The cause of this fluorescence was attributed to(a) the radiations which appeared to be coming … Read more
Q.1. Balmer series lies in which spectrum?(a) visible(b) ultraviolet(c) infrared(d) partially visible, partially infrared Answer Answer: (b) Q.2. In Bohr model of hydrogen atom, let P.E. represents potential energy and T.E. represents the total energy. In going to a higher level.(a) P. E. decreases, T.E. increases(b) P. E. increases, T.E. decreases(c) P. E. decreases, T.E. … Read more
MCQ based on Nuclei: Q.1. For a nuclear fusion process, suitable nuclei are(a) any nuclei(b) heavy nuclei(c) lighter nuclei(d) nuclei lying in the middle of periodic table Answer Answer: (c) Q.2. In the uranium radioactive series, the initial nucleus is 92U238 and that the final nucleus is 82Pb206. When uranium nucleus decays to lead, the … Read more
Q.1. In a semiconductor(a) there are no free electrons at 0 K(b) there are no free electrons at any temperature(c) the number of free electrons increases with pressure(d) the number of free electrons is more than that in a conductor Answer Answer: (a) Q.2. Let nh and ne be the number of holes and conduction … Read more
Here we are providing mcq questions for class 12 physics chapter 1 electric charges and fields. Students are suggested to go through each and every question to perform better in exams. Chapter Electric Charges and Fields Type of Questions MCQ Nature of Questions Competency Based Questions Board CBSE Class 12 Subject Physics Useful for Class … Read more
