WHATSAPP Welcome to Edugrown – Your Learning Partner
🛒
Previous Year Questions

PYQ Bank & Paper Generator

Board, class, subject, chapter, year-wise PYQ. Practice effectively and ace your board exams.

📝 Generate Question Paper
14,017 Questions
#1 Class 12 Physics Electromagnetic Induction 2021 Short 2M CBSE
A square of side $L$ metres lies in the XY-plane in a region where the magnetic field is $\vec{B} = B_0(2\hat{i} + 3\hat{j} + 4\hat{k})$ T, where $B_0$ is a constant. Find the magnitude of flux passing through the squ...
👁 View Answer
👍 2 👎 3
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#2 Class 12 Physics Electromagnetic Induction 2020 Mcq 1M CBSE
An area $A = 0.5$ m$^2$ is situated in a uniform magnetic field $B = 4.0$ Wb/m$^2$ and its normal makes an angle of 60° with the field. The magnetic flux passing through the area $A$ is
A. 2.0 Wb
B. 1.0 Wb
C. $\sqrt{3}$ Wb
D. 0.5 Wb
👁 View Answer
👍 2 👎 2
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#3 Class 12 Physics Electromagnetic Induction 2018 Mcq 1M CBSE
Whenever the flux linked with a circuit changes, there is an induced emf in the circuit. This emf lasts
A. for a very short duration
B. for a long duration
C. forever
D. as long as the magnetic flux in the circuit changes
👁 View Answer
👍 3 👎 4
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#4 Class 12 Physics Electromagnetic Induction 2019 Mcq 1M CBSE
A 2 m long solenoid with radius 2 cm and 2000 turns has another solenoid of 1000 turns wound closely near its mid-point. The mutual inductance of the solenoids is
A. 0.8 mH
B. 1.6 mH
C. 3.2 mH
D. 6.4 mH
👁 View Answer
👍 3 👎 3
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#5 Class 12 Physics Electromagnetic Induction 2021 Short 2M CBSE
A metallic rod of length $l$ is placed normal to the magnetic field $B$ and revolved in a circular path about one of its ends with angular speed $\omega$. Derive the expression for the potential difference across the ...
👁 View Answer
👍 2 👎 4
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#6 Class 12 Physics Electromagnetic Induction 2020 Mcq 1M CBSE
The mutual inductance, when the magnetic flux changes by $5 \times 10^{-2}$ Wb and current changes by 0.01 A, is
A. 0.2 H
B. 2.5 H
C. 5 H
D. 10 H
👁 View Answer
👍 2 👎 3
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#7 Class 12 Physics Magnetism and Matter 2023 Long 5M CBSE
Explain the domain theory of ferromagnetic substances. Also write down its properties.
👁 View Answer
👍 1 👎 2
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#8 Class 12 Physics Magnetism and Matter 2023 Short 3M CBSE
An iron rod of cross-sectional area $0.5$ cm$^2$ is subjected to a magnetising field of 1200 A·m$^{-1}$. If susceptibility of iron is 599, calculate: (1) $\mu$ (permeability), (2) $B$ (magnetic flux density), (3) $\Ph...
👁 View Answer
👍 1 👎 1
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#9 Class 12 Physics Magnetism and Matter 2022 Short 3M CBSE
The permeability of a metal is measured to be $0.12$ T·A$^{-1}$·m. Find its relative permeability $\mu_r$ and susceptibility $\chi_m$.
👁 View Answer
👍 3 👎 1
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#10 Class 12 Physics Magnetism and Matter 2021 Short 2M CBSE
Calculate the work done in rotating a bar magnet of magnetic moment 3 J·T$^{-1}$ through an angle of 60° from its position along a magnetic field of strength $0.34 \times 10^{-4}$ T.
👁 View Answer
👍 1 👎 1
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#11 Class 12 Physics Magnetism and Matter 2020 Short 3M CBSE
A bar magnet of length 0.1 m has a pole strength of 50 A·m. Calculate the magnetic field at a distance of 0.2 m from its centre on: (i) its axial line, (ii) its equatorial line.
👁 View Answer
👍 1 👎 2
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#12 Class 12 Physics Magnetism and Matter 2022 Short 2M CBSE
A bar magnet of length $L$ and magnetic dipole moment $M$ is bent in the form of an arc subtending an angle of 60° at its centre. What will be the new magnetic dipole moment?
👁 View Answer
👍 1 👎 1
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#13 Class 12 Physics Magnetism and Matter 2021 Short 3M CBSE
A current of 7.0 A flows in a plane circular coil of radius 10 cm having 100 turns placed in a uniform magnetic field of 0.2 Wb·m$^{-2}$. What orientations correspond to (1) stable equilibrium and (2) unstable equilib...
👁 View Answer
👍 2 👎 1
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#14 Class 12 Physics Magnetism and Matter 2022 Short 3M CBSE
Two identical magnetic dipoles of magnetic moment 1.0 A·m$^2$ each are placed at a separation of 2 m with their axes perpendicular to each other. Find the resultant magnetic field at the point mid-way between the dipo...
👁 View Answer
👍 1 👎 3
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#15 Class 12 Physics Magnetism and Matter 2021 Short 2M CBSE
A bar magnet of magnetic moment 6.4 A·m$^2$ is placed in a uniform magnetic field of 0.4 T. What is the torque acting on the magnet when its axis makes an angle of 60° with the magnetic field?
👁 View Answer
👍 5 👎 2
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#16 Class 12 Physics Magnetism and Matter 2020 Short 5M CBSE
Derive an expression for the magnetic field due to a magnetic dipole in the broadside-on (equatorial) position at a distance $r$ from its centre. The length of the dipole is $2l$ and its magnetic moment is $M$.
👁 View Answer
👍 1 👎 2
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#17 Class 12 Physics Magnetism and Matter 2022 Short 5M CBSE
Derive an expression for the magnetic field intensity at a point on the axial line of a bar magnet. What is the direction of the field?
👁 View Answer
👍 2 👎 2
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#18 Class 12 Physics Magnetism and Matter 2022 Long 5M CBSE
Draw the magnetic field lines distinguishing between diamagnetic and paramagnetic materials. Give a simple explanation to account for the difference in their magnetic behaviour.
👁 View Answer
👍 2 👎 3
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#19 Class 12 Physics Magnetism and Matter 2020 Short 2M CBSE
State Gauss's law of magnetism. What are its important consequences?
👁 View Answer
👍 3 👎 1
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
#20 Class 12 Physics Magnetism and Matter 2008 Short 2M CBSE
Two identical iron bars A and B are given, one of which is definitely known to be magnetised. How would you ascertain whether both are magnetised, or only one?
👁 View Answer
👍 3 👎 2
✅ Verified by Super Admin
Rate: ★ ★ ★ ★ ★
Advertisement

🔔 Email Updates Lein

Naya content aate hi email par pata chal jayega. Sirf wahi sections chunein jo chahiye.

🔒 Content copy nahi kar sakte