HSC Science (General)
HSC Science (Electronics)
HSC Science (Computer Science)
Academic Year: 2024-2025
Date: March 2025
Advertisements
General Instructions: The question paper is divided into four sections.
- Section A: Q. No.1 contains Ten multiple-choice types of questions, carrying One mark each. Q. No.2 contains Eight very short answer type of questions carrying One mark each.
- Section B: Q.No.3 to Q.No.14 contains Twelve short answer type of questions carrying Two marks each. (Attempt any Eight).
- Section C: Q.No.15 to Q.No.26 contain Twelve short answer type questions carrying Three marks each. (Attempt any Eight).
- Section D: Q.No.27 to Q.No.31 contain Five long answer type questions carrying Four marks each (Attempt any Three).
- Use of the log table is allowed. Use of calculator is not allowed.
- Figures to the right indicate full marks.
- For each multiple choice type question, it is mandatory to write the correct answer along with its alphabet, e.g., (a) ............../(b) ............... /(c) .............../(d) ................, No marks(s) shall be given, if ONLY the correct
answer or the alphabet of the correct answer is written. Only the first attempt will be considered for evaluation. - Physical Constants:
(i) mass of electron m = 9.1 × 10-31 kg
(ii) ε0 = 8.85 × 10-12 `C^2/(Nm^2)`
(iii) π = 3.142
(iv) charge on electron e = 1.6 × 10-19C
(v) µ0 = 4π × 10-7 Wb/Am
(vi) h = 6.63 × 10-34 Js
(vii) C = 3 × 108 m/s
In an AC circuit, e and i are given by e = 150 sin(150t)V and i = 150 sin `(150t + π/3)` A. The power dissipated in the circuit is ______.
106W
150W
5625W
Zero
Chapter: [0.13] AC Circuits
Choose the correct option:
A conductor rod of length (l) is moving with velocity (v) in a direction normal to a uniform magnetic field (B). What will be the magnitude of induced emf produced between the ends of the moving conductor?
BLv
BLv2
`1/2Blv`
`(2Bl)/v`
Chapter: [0.12] Electromagnetic Induction [0.16] Electromagnetic Inductions
Which of the following properties of a nucleus does not depend on its mass number?
Radius
Mass
Volume
Density
Chapter: [0.15] Structure of Atoms and Nuclei
A photocell is used to automatically switch on the street lights in the evening when the sunlight is low in intensity. Thus it has to work with visible light. The material of the cathode of the photocell is ______.
Zinc
Aluminum
Nickel
Potassium
Chapter: [0.14] Dual Nature of Radiation and Matter
Kirchhoff’s first law, i.e., ΣI = 0 at a junction, deals with the conservation of ______.
Charge
Energy
Momentum
Mass
Chapter: [0.09] Current Electricity
Choose the correct option:
A standing wave is produced on a string clamped at one end and free at the other. The length of the string ______.
Must be an odd integral multiple of `lambda/4`
Must be an odd integral multiple of `lambda/2`
Must be an odd integral multiple of `lambda`
Must be an even integral multiple of `lambda`
Chapter: [0.06] Superposition of Waves
What is the energy required to build up current of 1A in an inductor of 20 mH?
10 mJ
20 mJ
20 J
10 J
Chapter: [0.12] Electromagnetic Induction
When the balance point is obtained in the potentiometer, a current is drawn from ______.
Both the cells and auxiliary battery
Cell only
Auxiliary battery only
Neither cell nor auxiliary battery
Chapter: [0.09] Current Electricity [0.13] Current Electricity
In an ideal gas, the molecules possess
Only kinetic energy
Both kinetic energy and potential energy
Only potential energy
Neither kinetic energy nor potential energy
Chapter: [0.03] Kinetic Theory of Gases and Radiation
A particle of mass 1 kg, tied to a 1.2 m long string is whirled to perform the vertical circular motion, under gravity. The minimum speed of a particle is 5 m/s. Consider the following statements.
P) Maximum speed must be `5sqrt5` m/s.
Q) Difference between maximum and minimum tensions along the string is 60 N.
Select the correct option.
Only the statement P is correct.
Only the statement Q is correct.
Both the statements are correct.
Both the statements are incorrect.
Chapter: [0.01] Rotational Dynamics
How much amount of work is done in forming a soap bubble of radius r?
Chapter: [0.02] Mechanical Properties of Fluids [0.06] Surface Tension
The emissive power of a sphere of area 0.02 m2 is 0.5 kcal s-1m-2. What is the amount of heat radiated by the spherical surface in 20 seconds?
Chapter: [0.03] Kinetic Theory of Gases and Radiation
State the importance of Davisson and Germer experiment.
Chapter: [0.14] Dual Nature of Radiation and Matter
Answer in brief:
A gas contained in a cylinder surrounded by a thick layer of insulating material is quickly compressed has work been done?
Yes
No
Chapter: [0.04] Thermodynamics [0.09] Kinetic Theory of Gases and Radiation
What is electromagnetic induction?
Chapter: [0.12] Electromagnetic Induction [0.16] Electromagnetic Inductions
Answer in brief:
If the difference between the radii of the two spheres of a spherical capacitor is increased, state whether the capacitance will increase or decrease.
Chapter: [0.08] Electrostatics
Advertisements
Give an example of some familiar process in which no heat is added to or removed from a system, but the temperature of the system changes.
Chapter: [0.04] Thermodynamics
On what factors does the potential gradient of the wire depend?
Chapter: [0.09] Current Electricity [0.13] Current Electricity
A horizontal wire 20 m long extending from east to west is falling with a velocity of 10 m/s normal to the Earth’s magnetic field of 0.5 × 10−4 T. What is the value of induced emf in the wire?
Chapter: [0.12] Electromagnetic Induction
A very long straight wire carries a current of 5.2 A. What is the magnitude of the magnetic field at a distance 3.1 cm from the wire?
Chapter: [0.1] Magnetic Fields Due to Electric Current
Answer in brief.
Why should a Carnot cycle have two isothermal two adiabatic processes?
Chapter: [0.04] Thermodynamics
The safest way to protect yourself from lightning is to be inside a car. Justify.
Chapter: [0.08] Electrostatics
A galvanometer has a resistance of 25 Ω and its full scale deflection current is 25 μA. What resistance should be added to it to have a range of 0-10 V?
Chapter:
On what factors do the degrees of freedom depend?
Chapter: [0.03] Kinetic Theory of Gases and Radiation [0.09] Kinetic Theory of Gases and Radiation
What are primary and secondary sources of light?
Chapter: [0.07] Wave Optics
Answer in brief.
Discuss the Curie law for paramagnetic material.
Chapter: [0.11] Magnetic Materials [0.15] Magnetism
Why two or more mercury drops form a single drop when brought in contact with each other?
Chapter: [0.02] Mechanical Properties of Fluids
State the difficulties faced by Rutherford’s atomic model.
Chapter:
Why is a low-density liquid used as a manometric liquid in a physics laboratory?
Chapter: [0.02] Mechanical Properties of Fluids
A violin string vibrates with fundamental frequency of 440Hz. What are the frequencies of the first and second overtones?
Chapter: [0.06] Superposition of Waves
A potentiometer wire has a length of 1.5 m and a resistance of 10 Ω. It is connected in series with the cell of emf 4 Volt and internal resistance 5 Ω. Calculate the potential drop per centimeter of the wire.
Chapter: [0.09] Current Electricity [0.13] Current Electricity
A rectangular wireframe of size 2 cm x 2 cm, is dipped in a soap solution and taken out. A soap film is formed, if the size of the film is changed to 3 cm x 3 cm, Calculate the work done in the process. The surface tension of the soap film is 3 x 10-2 N/m.
Chapter: [0.02] Mechanical Properties of Fluids
An electron is moving with a speed of 3.2 × 107 m/s in a magnetic field of 6.00 × 10-4 T perpendicular to its path. What will be the radium of the path? What will be frequency and the energy in keV?
[Given: mass of electron = 9.1 × 10−31 kg, charge e = 1.6 × 10−19 C, 1 eV = 1.6 × 10−19 J]
Chapter: [0.1] Magnetic Fields Due to Electric Current
A resistor held in running water carries electric current. Treat the resistor as the system
- Does heat flow into the resistor?
- Is there a flow of heat into the water?
- Is any work done?
- Assuming the state of resistance to remain unchanged, apply the first law of thermodynamics to this process.
Chapter: [0.04] Thermodynamics
Advertisements
A particle performing linear S.H.M. of period 2π seconds about the mean position O is observed to have a speed of `"b" sqrt3` m/s, when at a distance b (metre) from O. If the particle is moving away from O at that instant, find the time required by the particle, to travel a further distance b.
Chapter: [0.05] Oscillations
When an AC source is connected to an ideal inductor show that the average power supplied by the source over a complete cycle is zero.
Chapter: [0.13] AC Circuits
Explain how vibrating strings can be verified using a sonometer.
Chapter: [0.06] Superposition of Waves
Describe how a potentiometer is used to compare the emf's of two cells by the combination method.
Chapter: [0.09] Current Electricity [0.13] Current Electricity
Obtain the expression for the period of a magnet vibrating in a uniform magnetic field and performing S.H.M.
Chapter: [0.05] Oscillations
The common-base DC current gain of a transistor is 0.967. If the emitter current is 10mA. What is the value of base current?
Chapter: [0.16] Semiconductor Devices
In a common-base connection, a certain transistor has an emitter current of 10mA and a collector current of 9.8 mA. Calculate the value of the base current.
Chapter: [0.16] Semiconductor Devices
The threshold wavelength of tungsten is 2.76 x 10-5 cm.
(a) Explain why no photoelectrons are emitted when the wavelength is more than 2.76 x 10-5 cm.
(b) What will be the maximum kinetic energy of electrons ejected in each of the following cases
(i) if ultraviolet radiation of wavelength λ = 1.80 × 10-5 cm and
(ii) radiation of frequency 4 x 1015 Hz is made incident on the tungsten surface?
Chapter: [0.14] Dual Nature of Radiation and Matter
State the law of equipartition of energy and hence calculate the molar specific heat of mono-atomic and di-atomic gases at constant volume and constant pressure.
Chapter: [0.03] Kinetic Theory of Gases and Radiation [0.09] Kinetic Theory of Gases and Radiation
What happens to a ferromagnetic material when its temperature increases above curie temperature?
Chapter: [0.11] Magnetic Materials [0.15] Magnetism
In a common-base connection, the emitter current is 6.28 mA and the collector current is 6.20 mA. Determine the common-base DC current gain.
Chapter: [0.16] Semiconductor Devices
What are eddy currents?
Chapter: [0.12] Electromagnetic Induction
State applications of eddy currents.
Chapter: [0.12] Electromagnetic Induction
The magnetic field at a distance of 2.4 cm from a long straight [current-carrying] wire is 16 µT. What is the current through the wire?
Chapter: [0.1] Magnetic Fields Due to Electric Current
Explain the principle of operation of a photodiode.
Chapter: [0.16] Semiconductor Devices
Determine the series limit of Balmer, Paschen, and Pfund series, given the limit for Lyman series is 912 Å.
Chapter: [0.15] Structure of Atoms and Nuclei
A dipole with its charges, - q and + q located at the points (O, -b, O) and (O, +b, O) is present in a uniform electric field E. The equipotential surfaces of this field are planes parallel to the yz plane.
(a) What is the direction of the electric field E?
(b) How much torque would the dipole experience in this field?
Chapter: [0.08] Electrostatics
A 25 μF capacitor, a 0.10 H inductor, and a 25Ω resistor are connected in series with an AC source whose emf is given by e = 310 sin 314 t (volt). What is the frequency, reactance, impedance, current, and phase angle of the circuit?
Chapter: [0.13] AC Circuits
Other Solutions
Submit Question Paper
Help us maintain new question papers on Shaalaa.com, so we can continue to help studentsonly jpg, png and pdf files
Maharashtra State Board previous year question papers 12th Standard Board Exam Physics with solutions 2024 - 2025
Previous year Question paper for Maharashtra State Board 12th Standard Board Exam -2025 is solved by experts. Solved question papers gives you the chance to check yourself after your mock test.
By referring the question paper Solutions for Physics, you can scale your preparation level and work on your weak areas. It will also help the candidates in developing the time-management skills. Practice makes perfect, and there is no better way to practice than to attempt previous year question paper solutions of Maharashtra State Board 12th Standard Board Exam.
How Maharashtra State Board 12th Standard Board Exam Question Paper solutions Help Students ?
• Question paper solutions for Physics will helps students to prepare for exam.
• Question paper with answer will boost students confidence in exam time and also give you an idea About the important questions and topics to be prepared for the board exam.
• For finding solution of question papers no need to refer so multiple sources like textbook or guides.
