Class 12

CBSE Class 12 Physics Chapter 9 – Ray Optics and Optical Instruments Important Question Answer Very Short Type Question – 1 Mark 1. A person is standing before a concave mirror cannot see his image, unless he is beyond the centre of curvature? Why? Ans. When man stands beyond focus is i.e. between focus and centre […]

CBSE Class 12 Physics Chapter 8 – Electromagnetic Waves Important Question Answer Very Short Type Question – 1 Mark 1. The charging current for a capacitor is 0.25A. What is the displacement current across its plates? Ans. Displacement current remains the same as charging current and is equal to 0.25A. 2. Write the following radiations in

CBSE Class 12 Physics Chapter 6 – Electromagnetic Induction Important Question Answer Very short type question answer – 1 Marks 1. A metallic wire coil is stationary in a non – uniform magnetic field. What is the emf. Induced in the coil? Ans. NO emf is induced in the coil as there is no change in

CBSE Class 12 Physics Chapter 5 – Magnetism And Matter Important Question Answer Very Short Type Question – 1 Mark 1. How does the intensity of magnetization of a paramagnetic material vary with increasing applied magnetic field? Ans. Intensity of magnetization increases with the increase in applied magnetic field. 2. An iron bar magnet is heated

CBSE Class 12 Physics Chapter 4 – Moving Charges and Magnetism Important Question Answer Very short type Question – 1 Mark 1. State two properties of the material of the wire used for suspension of the coil in a moving coil galvanometer? Ans. (a) Non-Brittle conductor (b) Restoring Torque per unit Twist should be small. 2. What will

CBSE Class 12 Physics Chapter 3 – Current Electricity Important Question Answer Very short type Question – 1 Mark 1. If the temperature of a good conductor decreases, how does the relaxation time of electrons in the conductor change? Ans. We know  When temperature decreases, collision decreases and thus relaxation time increases which in turn decreases the

CBSE Class 12 Physics Chapter 2 – Electrostatic Potential and Capacitance Important Question Answer Very short type Question – 1 Mark 1. Why does the electric field inside a dielectric decrease when it is placed in an external electric field? Ans. The electric field, inside a dielectric decrease when it is placed is an external electric

CBSE Class 12 Physics Chapter 1 – Electric Charges and Fields Important Question Answer Very short type Question – 1 Mark Does the Force Between Two Point Charges Change if the Dielectric Constant of the Medium in Which they are Kept is Increased? Ans:  Dielectric constant of a medium is given by  k=FVFM=force between the

Chapterwise Important Questions for CBSE Class 12 Physics Chapter 1 – Electric Charges and Fields Chapter 2 – Electrostatic Potential and Capacitance Chapter 3 – Current Electricity Chapter 4 – Moving Charges and Magnetism Chapter 5 – Magnetism And Matter Chapter 6 – Electromagnetic Induction Chapter 7 – Alternating Current Chapter 8 – Electromagnetic Waves

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