List of top Physics Questions asked in MPBSE Class XII Board

Write the differences between intrinsic semiconductor and extrinsic semiconductor.
OR
What is P-N junction diode? Describe its use as a full wave rectifier with diagram.
What is an electric cell? Give an example.
OR Write Ohm's law and also draw the graph between voltage and current.
Write any two Postulates of Bohr's model.
OR
Who discovered the nucleus model of atom? Draw its diagram.
What is Self Inductance? Derive an expression for the self-inductance of a solenoid. Also write the factor affecting it.
OR
What is a Transformer? Describe its principle and different types of energy losses in it.
Derive an expression for the refractive index of a glass prism.
OR
Derive the lens maker formula for thin lenses.
The radii of curvatures of the focus of a double convex lens are 10 cm and 15 cm and its focal length is 12 cm. What is the refractive index of glass? (Refractive index of air = 1)
OR
A convex lens has 20 cm focal length in air. What is focal length in water? (Refractive index of air-water = 1.33, refractive index for air-glass = 1.5)
A light bulb is rated at 200 W for a 220 V supply. Find the resistance of the bulb.
OR
A light bulb is rated at 200 W for a 220 V supply. Find the rms current through the bulb.
Derive an expression for Coulomb's law of electrostatics by Gauss's law.
OR
What is capacity of a conductor? Write the factors affecting the capacity of a conductor.
Write any three differences between electromotive force and potential difference.
OR
Write any three differences between Resistance and Specific Resistance.
Compare the resistance of 100 watt and 400 watt of two bulbs if their voltage is same.
OR
What will be the resistance of a wire if their length changes to half of their original length and cross-sectional area changes two times of original?
What is Conjugate focus?
OR
Write any two differences between refractive telescope and reflective telescope.
What is a fundamental charge? Write its value.
OR
Where will an electron move in an electric field, either high potential side or low potential side? And why?
Write Bio-Savart expansion in vector form.
OR
Why there is no end point of magnetic field lines?
Write answer of each question in one sentence: What is the affect of temperature on drift velocity?
Write answer of each question in one sentence: Give relations between energy and frequency of a radiation.
What is isotopes? Write any two isotopes of hydrogen atom.
OR
What is Isobar? Give example.
What is Photoelectric effect? Write Einstein's photoelectric equation.
OR
What is de-broglie matter wave? Write de-broglie wave relation.
Write answer of each question in one sentence: What is diffraction?
Write answer of each question in one sentence: What is direction of magnetic dipole moment of a magnet?
Write answer of each question in one sentence: What is threshold frequency?
Write True or False:
Working of microwave oven is based on Radio wave.
Write answer of each question in one sentence: How Galvanometer is changed in a voltmeter?
Write True or False:
The average power supplied to an inductor over one complete cycle is zero.
Write answer of each question in one sentence: What is the unit of power of lens?
The \(\underline{\hspace{3cm}}\) of the galvanometer is reduced by the use of shunt.