CBSE Class 12 Physics HOTs Optics Set A
CBSE Class 12 Physics HOTs Questions Database for chapter Optics. Based on CBSE and NCERT guidelines. The students should practice these HOTs Questions to gain perfection which will help him to get more marks in CBSE examination. Based on CBSE and NCERT guidelines. Based on…
CBSE Class 12 Physics HOTs Magnetic Effects of Current
Unit 03 Chapter: Magnetic Effects of Current ONE MARK QUESTIONS Question. Relative permeability of a material µr = 0.5. Identify the nature of the magnetic material and write its relation of magnetic susceptibility. Answer : The nature of Magnetic Material is…
CBSE Class 12 Physics HOTs Electromagnetic Waves
UNIT 05 (EM waves) 1 MARK QUESTIONS: ONE MARK QUESTIONS Question. The frequency of oscillation of the electric vector of a certain electromagnetic wave is 5x1014 Hz. What is the frequency of oscillation of the corresponding magnetic field vector and to which part of…
CBSE Class 12 Physics HOTs Electrostatic Potential and Capacitance
UNIT 01 ELECTROSTATICS ONE MARK QUESTIONS Question. Define the term ‘potential energy’ of charge ‘q ‘at a distance ‘r’ in an external electric field. Answer : It is defined as the amount of work done in bringing the charge q from infinity to the…
CBSE Class 12 Physics HOTs Electronic Devices Set A
UNIT 09 ONE MARK QUESTIONS Q.1 How does the forbidden energy gap of an intrinsic semiconductor vary with the increase in temperature? Q.2 Why is a semiconductor damaged by a strong current? Q.3 What is the cause of a small current in reverse bias arrangement in…
CBSE Class 12 Physics HOTs Current Electricity
UNIT 02 CURRENT ELECTRICITY ONE MARK QUESTIONS Question. Define the terms conductivity of a conductor?On what factors do it depend? Answer : Conductivity is the reciprocal of resistivity,It depends upon no density of electrons and…
CBSE Class 12 Physics HOTs Communication Systems
COMMUNICATION SYSTEMS 1 Mark: ONE MARK QUESTIONS: Question. Name the mode of propagation of radio waves which travel in a straight line from the transmitting antenna to the receiving antenna. Answer : Space waves Question. Name the type of communication that…
CBSE Class 12 Physics HOTs Atoms And Nuclei
1 Marks Questions: 1. Initially the number of nuclei of a radioactive substance are 100. At t=1s these numbers become 80. Find the number of nuclei undecayed at t=2s. 2. Draw a graph of rate of formation of ‘Y’ against time ‘t’ when a radioactive nucleus ‘X’ decays to a…
CBSE Class 12 Physics HOTs All Chapters Set A
UNIT-1 ELECTROSTATICS 1. Where the energy of capacitor does resides? 2. Do electrons tend to go to region of low or high potential? 3. What is the net charge on the charged capacitor? 4. A Gaussian surface encloses an electric dipole within it. What is the total flux…
CBSE Class 12 Physics HOTs Magnetic Effects Of Current and Magnetism
UNIT -3 MAGNETIC EFFECTS OF CURRENT & MAGNETISM ONE MARK QUESTIONS Question. An electric current of 0.25 A flows in a loop of radius 0.2 cm. Calculate the magnitude of the magnetic dipole moment of the dipole formed. Answer : 3.14 x 10-6 Am2 Question. A…
CBSE Class 12 Physics HOTs All Chapters Answers
HINTS FOR CLASS-XII(PHYSICS) – HOTS FOR THE YEAR-2009-10 HINTS FOR HOTS-CLASS-XII(PHYSICS) UNIT-1 HINTS FOR ELECTROSTAICS 1. In the dielectric medium between the plates. 2. High potential, as electrons are negatively charged. 3. Zero 4. Zero 5. ML-1T-2 6. Zero 7. No…
CBSE Class 12 Physics HOTs Electronic Devices Set B
UNIT-9 ELECTRONIC DEVICES 1.What is the order of energy gap in a conductor, semi conductor, and insulator?. 2.Why does the conductivity of a semi conductor change with the rise in temperature ? 3. Is the number of electrons greater than, less than (or) equal to the number…
CBSE Class 12 Physics HOTs Optics Set C
UNIT-5 OPTICS 1.When a photon collides with an electron, which of the following characteristics of the photon increases? 2.Which of the following does not support the wave nature of light? 3.The distance travelled by the ray of light during the time octagonal mirror rotates…
CBSE Class 12 Physics HOTs Dual Nature Of Matter And Radiations
DUAL NATURE OF MATTER AND RADIATIONS ONE MARK QUESTIONS: Question. An electron and alpha particle have the same de-Broglie wavelength associated with them. How are their kinetic energies related to each other? Answer : 1. We have λ= h/√2mk or k=…