If you are a Bihar Board Class 12th Physics student preparing for the 2024 exam, this blog will be beneficial for you. In this post, you are provided with BSEB 12th Physics 2024 Questions, Last Year Paper (Part 2) with Solutions, which will further strengthen your preparation.
BSEB 12th Physics 2024 Questions, Last Year’s Paper (Part 2)
1. The nature of electron beams moving with uniform velocity in the same direction will be
(A) converging
(B) diverging
(C) parallel
(D) None of these
Answer:-diverging
2. S.I. unit of self-induction is
(A) Coulomb
(B) volt (V)
(C) ohm (2)
(D) Henry (H)
Answer: Henry (H)
3. On oscillating any metallic sphere in the magnetic field, oscillatory motion is
(A) accelerated
(B) damping
(C) uniform
(D) None of these
Answer: damping
4. The working principle of a dynamo is based on
(A) heating effect of current
(B) electromagnetic induction
(C) induced magnetism
(D) induced current
Answer: heating effect of current
5. What is produced by an induction coil?
(A) high current
(B) high voltage
(C) low current
(D) low voltage
Answer: high voltage
6. The energy density of the magnetic field B is
(A) (B ^ 2)/(2mu_{0})
(B) (B ^ 2)/mu_{0}
(C) (B ^ 2)/(4mu_{0})
(D) (B ^ 2)/(3mu_{0})
Answer: -(B ^ 2)/(2mu_{0})
7. What value of alternating current is measured by a hot-wire ammeter?
(A) high value
(B) average value
(C) root mean square value (D)
(D) None of these
Answer: root mean square value (D)
8. If the magnetic field vector B is perpendicular to the surface area vector ds, then the magnetic flux on the ds area will be
(A) B ds cos
(B) B * ds * sin theta
(C) B * ds * tan theta
(D) zero
Answer: -zero
9. The unit of reactance is
(A) ohm
(B) tesla
(C) henry
(D) farad
Answer: -ohm
10. The mean value of alternating current in a full cycle is
(A) I
(B) I/2
(C) 21
(D) zero
Answer: -zero
11. If the phase difference between alternating current and emf is Phi, then the value of power factor is
(A) cos phi
(B) cos^2 phi
(C) sin
(D) tan
Answer: -cos phi
12. The unit of linear charge density is
(A) coulomb/metre
(B) coulomb × metre
(C) metre/coulomb
(D) None of these
Answer:-coulomb/metre
13. The dimensional formula of the intensity of the electric field is
(A) [ML * T ^ 2 * A ^ – 1]
(B) [ML * T ^ -3 * A ^ -1]
(C) [ML, T^ ^ – 3 * A]
(D) [M * L ^ 2 * T ^ – 3 * A ^ – 1]
Answer:—[ML * T ^ – 3 * A ^ – 1]
14. The number of electrons present in 8 coulombs of negative charge is
(A) 5 * 10 ^ 19
(B) 2.5 * 10 ^ 19
(C) 12.8 * 10 ^ 19
(D) 1.6 * 10 ^ 19
Answer: 5 * 10 ^ 19
15. Two equal and opposite charges of 5 coulombs are kept mutually at a distance of 5.0 cm. The electric dipole moment of the system is
(A) 5×10⁻² coulomb-meter
(B) 25 x 102 coulomb-meters
(C) 1 coulomb-metre
(D) Zero
Answer:—Zero
16. On moving from the surface of a charged metallic sphere to the centre of the sphere, the electric field
(A) decreases
(B) increases
(C) remains same as at the surface
(D) zero at all places
Answer: -zero at all places
17. N electric dipoles are situated in a closed surface. The total electric flux coming out of a closed surface will be
(A) q/0
(B) 24/0
(C) nq/80
(D) zero
Answer:- zero
18. Which of the following is blocked by a capacitor?
(A) AC
(B) DC
(C) Both AC and DC
(D) Neither AC nor DC
Answer: DC
19. Two bulbs of 40 W and 60 W are connected to a 220 V source. The ratio of their resistance will be
(A) 4:3
(B) 3:4
(C) 2:3
(D) 3:2
Answer: 3:2
20. The resistance of any wire is 5002. Its electrical conductivity will be
(A) 0.002 ohm¹
(B) 0.02 ohm¹
(C) 50 ohm¹
(D) 500 ohm¹
Answer: -0.002 ohm¹
21. To increase the sensitivity of a potentiometer
(A) The cross-sectional area of its wire will have to be increased
(B) The current in its wire will have to be increased
(C) The current in its wire will have to be increased
(D) The length of its wire will have to be increased
Answer: The length of its wire will have to be increased
22. Kirchhoff’s second law of electricity is related to
(A) Conservation of charge
(B) Conservation of mass
(C) Conservation of momentum
(D) Conservation of energy
Answer: conservation of charge
23. Which one of the following is not a unit of magnetic field?
(A) tesla
(C) newton/ampere-metre
(B) weber/meter²
(D) newton/ampere²
Answer: -newton/ampere²
24. A magnet is situated near a closed conductor. Current can be produced in the conductor if
(A) Only the magnet is in motion
(B) Only the conductor is in motion
(C) Both the magnet and the conductor are in motion
(D) There is relative motion between the magnet and the conductor.
Answer: There is relative motion between the magnet and the conductor.
We have completed BSEB 12th Physics 2024 Questions, Last Year’s Paper (Part 2)
Disclaimer: The questions and answers used in this post are taken from the book “Golden Publication.” We give credit to Golden Publication for this, and this blog has been created for educational purposes only.
BSEB 12th Physics 2024 Questions