MCQ Questions for Class 12 Physics Chapter 15 Communication Systems with Answers Question 1. Who undertook the first space walk and in which year? (a) Leonov 1965 (b) Neil Armstrong, 1969 (c) Rakesh Sharma. 1998 (d) None of these Answer Answer: (a) Leonov 1965 Question 2. The term used “to Read more…
MCQ Questions for Class 12 Physics Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits with Answers Question 1. Bonds in a semiconductor : (a) trivalent (b) covalent (c) bivalent (d) monovalent Answer Answer: (b) covalent Question 2. Number of electrons in the valence shell of a semiconductor is: (a) Read more…
MCQ Questions for Class 12 Physics Chapter 13 Nuclei with Answers Question 1. How many electrons are contained in \(_{92}^{238}\)U nucleus? (a) 92 (b) 146 (c) 238 (d) 0 Answer Answer: (d) 0 Question 2. Chadwick was awarded the Nobel prize in Physics in 1935 for his discovery of: (a) Read more…
MCQ Questions for Class 12 Physics Chapter 12 Atoms with Answers Question 1. An atom stays in an excited state for about: (a) 10 micro seconds (b) 10 milli seconds (c) 10 nano seconds (d) 10 seconds Answer Answer: (c) 10 nano seconds Question 2. The energy equivalent to one Read more…
MCQ Questions for Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter with Answers Question 1. De-Broglie equation states the: (a) dual nature (b) particle nature (c) wave nature (d) none of these Answer Answer: (a) dual nature Question 2. Protons and alpha particles have the same de-Broglie Read more…
MCQ Questions for Class 12 Physics Chapter 10 Wave Optics with Answers Question 1. What happens if one of the slits, say S1 in Young’s double , slit experiment-is covered with a glass plate which absorbs half the intensity of light from it? (a) The bright fringes become less-bright and Read more…
MCQ Questions for Class 12 Physics Chapter 9 Ray Optics and Optical Instruments with Answers Question 1. Which of-the following is not a property of light? (a) It can travel through vacuum (b) It has a finite speed (c) It requires a material medium for its propagation (d) It involve Read more…
MCQ Questions for Class 12 Physics Chapter 8 Electromagnetic Waves with Answers Question 1. The dimensional formula of \(\vec{E}\) is: (a)[MLT-2A-1] (b) [MLT-3A-1] (c) [MLT-2A-2] (d) None of these Answer Answer: (b) [MLT-3A-1] Question 2. The dimensional formula of is: (a) [MLT-2A-1] (b) [ML0T-2A-1] (c) [ML0T-3A-1] (d) None of these Read more…
MCQ Questions for Class 12 Physics Chapter 7 Alternating Current with Answers Question 1. The average value of a cover a complete cycle is: (a) l0 (b) \(\frac{l_0}{2}\) (c) \(\frac{l_0}{√2}\) (d) zero Answer Answer: (d) zero Question 2. Power factor of an ac circuit is a measure of: (a) virtual Read more…
MCQ Questions for Class 12 Physics Chapter 5 Magnetism and Matter with Answers Question 1. S.I. unit of flux is : (a) Ohm (b) Weber (c) Tesla (d) None Answer Answer: (b) Weber Question 2. What is the angle of dip at a place where the horizontal component of earth’s Read more…