HSC Science (General)
HSC Science (Electronics)
HSC Science (Computer Science)
Academic Year: 2023-2024
Date & Time: 27th February 2024, 11:00 am
Duration: 3h
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General Instructions :
The question paper is divided into four sections :
- Section A:
Q. No. 1 contains Ten multiple choice type 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 contain Twelve short answers types of questions carrying Two marks each. (Attempt any Eight).
- Section C: Q. No. 15 to Q. No. 26 contain Twelve short answer type of questions carrying Three marks each. (Attempt any Eight).
- Section D: Q. No. 27 to Q. No. 31 contain Five long answer type of 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 multiple choice type questions, 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) Planck's constant h = 6.63 × 10-34 J.s.
(vii) Speed of light c = 3 × 108 m/s
(viii) g = 9.8 m/s2
(ix) Rydberg's constant RH = 1.097 × 107m-1
(x) Stefan's constant σ = 5.67 × 10-8J m-2 s-1 K-4
The moment of inertia (MI) of a disc of radius R and mass M about its central axis is ______.
`"MR"^2/4`
`"MR"^2/2`
MR2
`(3"MR"^2)/2`
Chapter: [0.01] Rotational Dynamics
The dimensional formula of surface tension is ______.
[L−1M1T−2]
[L2M1T−2]
[L1M1T−1]
[L0M1T−2]
Chapter: [0.02] Mechanical Properties of Fluids [0.06] Surface Tension
Phase difference between a node and an adjacent antinode in a stationary wave is ______.
`pi/4` rad
`pi/2`rad
`(3pi)/4`rad
`pi` rad
Chapter: [0.06] Superposition of Waves
The work done in bringing a unit positive charge from infinity to a given point against the direction of electric field is known as ______.
electric flux
magnetic potential
electric potential
gravitational potential
Chapter: [0.08] Electrostatics
To convert a moving coil galvanometer into an ammeter we need to connect a ______.
small resistance in parallel with it
large resistance in series with it
small resistance in series with it
large resistance in parallel with it
Chapter: [0.09] Current Electricity [0.14] Magnetic Effects of Electric Current
If the frequency of incident light falling on a photosensitive material is doubled, then the kinetic energy of the emitted photoelectron will be ______.
same as its initial value
two times its initial value
more than two times its initial value
less than two times its initial value
Chapter: [0.14] Dual Nature of Radiation and Matter
In a cyclic process, if ΔU = internal energy, W = work done, Q = Heat supplied then ______.
ΔU = Q
Q = 0
W = 0
W = Q
Chapter: [0.04] Thermodynamics
The current in a coil changes from 50A to 10A in 0.1 second. The self inductance of the coil is 20H. The induced e.m.f. in the coil is ______.
800V
6000V
7000V
8000V
Chapter: [0.12] Electromagnetic Induction [0.16] Electromagnetic Inductions
The velocity of bob of a second’s pendulum when it is 6 cm from its mean position and amplitude of 10 cm, is ______.
8π cm/s
6π cm/s
4π cm/s
2π cm/s
Chapter: [0.05] Oscillations
In biprism experiment, the distance of 20th bright band from the central bright band is 1.2 cm. Without changing the experimental set-up, the distance of 30th bright band from the central bright band will be ______.
0.6 cm
0.8 cm
1.2 cm
1.8 cm
Chapter: [0.07] Wave Optics
Define centripetal force.
Chapter: [0.01] Rotational Dynamics
Why a detergent powder is mixed with water to wash clothes?
Chapter: [0.02] Mechanical Properties of Fluids [0.06] Surface Tension
What is the value of resistance for an ideal voltmeter?
Chapter: [0.09] Current Electricity [0.13] Current Electricity
Write the formula for torque acting on rotating current carrying coil in terms of magnetic dipole moment, in vector form.
Chapter: [0.1] Magnetic Fields Due to Electric Current
What is binding energy of a hydrogen atom?
Chapter: [0.15] Structure of Atoms and Nuclei [0.18] Atoms, Molecules and Nuclei
What are surroundings in thermodynamics?
Chapter: [0.04] Thermodynamics
In a photoelectric experiment, the stopping potential is 1.5V. What is the maximum kinetic energy of a photoelectron?
Chapter: [0.14] Dual Nature of Radiation and Matter
Two capacitors of capacities 5 μF and 10 μF respectively are connected in series. Calculate the resultant capacity of the combination.
Chapter:
Explain the change in internal energy of a thermodynamic system (the gas) by heating it.
Chapter: [0.04] Thermodynamics
Explain the construction and propagation of a spherical wavefront using Huygens's principle.
Chapter: [0.07] Wave Optics
Define Magnetization.
Chapter: [0.11] Magnetic Materials [0.15] Magnetism
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State SI unit of Magnetization.
Chapter: [0.11] Magnetic Materials [0.15] Magnetism
Obtain the differential equation of linear simple harmonic motion.
Chapter: [0.04] Oscillations [0.05] Oscillations
A galvanometer has a resistance of 30Ω, and its full-scale deflection current is 20 microampere (μA). What resistance should be added to it to have a range of 0-10 volts?
Chapter:
Explain Biot Savart's Law.
Chapter: [0.1] Magnetic Fields Due to Electric Current
What is a Light Emitting Diode?
Chapter: [0.16] Semiconductor Devices
Draw Light Emitting Diode circuit symbol.
Chapter: [0.16] Semiconductor Devices
An aircraft of wing span of 60 m flies horizontally in earth’s magnetic field of 6 × 10−5 T at a speed of 500 m/s. Calculate the e.m.f. induced between the tips of the wings of the aircraft.
Chapter: [0.12] Electromagnetic Induction
Derive an expression for maximum speed moving along a horizontal circular track.
Chapter: [0.01] Rotational Dynamics
A horizontal force of 0.5 N is required to move a metal plate of area 10−2 m2 with a velocity of 3 × 10−2m/s, when it rests on 0.5 × 10−3 m thick layer of glycerin. Find the coefficient of viscosity of glycerin.
Chapter: [0.01] Rotational Dynamics
Two tuning forks having frequencies 320 Hz and 340 Hz are sounded together to produce sound waves. The velocity of sound in air is 340 m/s. Find the difference in wavelength of these waves.
Chapter: [0.06] Superposition of Waves
Calculate the change in angular momentum of the electron when it jumps from third orbit to first orbit in hydrogen atom.
(Take h = 6.33 × 10−34 Js)
Chapter: [0.01] Rotational Dynamics
A circular coil of wire is made up of 200 turns, each of radius 10 cm. If a current of 0.5A passes through it, what will be the Magnetic field at the centre of the coil?
Chapter: [0.1] Magnetic Fields Due to Electric Current
Define photoelectric effect.
Chapter: [0.14] Dual Nature of Radiation and Matter
Explain the experimental set-up of photoelectric effect.
Chapter: [0.14] Dual Nature of Radiation and Matter
Derive the relation between α and β.
Chapter: [0.16] Semiconductor Devices
Define the surface energy of the liquid.
Chapter: [0.02] Mechanical Properties of Fluids
Derive the relation between surface tension and surface energy per unit area.
Chapter: [0.02] Mechanical Properties of Fluids
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What is an isothermal process?
Chapter: [0.04] Thermodynamics
Obtain an expression for the workdone by a gas in an isothermal process.
Chapter: [0.04] Thermodynamics
Derive an expression for the equation of stationary wave on a stretched string.
Chapter: [0.06] Superposition of Waves
Show that the distance between two successive nodes or antinodes is λ/2.
Chapter: [0.06] Superposition of Waves
Derive an expression for the impedance of an LCR circuit connected to an AC power supply. Draw phasor diagram.
Chapter: [0.13] AC Circuits [0.16] Electromagnetic Inductions
Calculate the wavelength of the first two lines in the Balmer series of hydrogen atoms.
Chapter: [0.15] Structure of Atoms and Nuclei
Chapter: [0.1] Magnetic Fields Due to Electric Current
The radius of a circular track is 200 m. Find the angle of banking of the track, if the maximum speed at which a car can be driven safely along it is 25 m/sec.
Chapter: [0.01] Rotational Dynamics
Prove the Mayer's relation `C_p - C _v = R/J`
Chapter: [0.03] Kinetic Theory of Gases and Radiation
An alternating voltage is given by e = 8sin628.4t. Find
- peak value of e.m.f.
- frequency or e.m.f.
- instantaneous value of e.m.f. at time t = 10. ms
Chapter: [0.13] AC Circuits
What is a transformer?
Chapter: [0.12] Electromagnetic Induction [0.16] Electromagnetic Inductions
Explain the construction and working of the transformer.
Chapter: [0.12] Electromagnetic Induction [0.16] Electromagnetic Inductions
Derive the equation for a transformer.
Chapter: [0.12] Electromagnetic Induction [0.16] Electromagnetic Inductions
Using the geometry of the double slit experiment, derive the expression for fringe width of interference bands.
Chapter: [0.07] Wave Optics
Distinguish between an ammeter and a voltmeter.
Chapter:
The displacement of a particle performing simple harmonic motion is `1/3` rd of its amplitude. What fraction of total energy will be its kinetic energy?
Chapter: [0.05] Oscillations
Draw a neat labelled diagram of Ferry’s perfectly black body.
Chapter: [0.03] Kinetic Theory of Gases and Radiation
Compare the rms speed of hydrogen molecules at 227°C with the rms speed of oxygen molecules at 127°C. Given that molecular masses of hydrogen and oxygen are 2 and 32 respectively.
Chapter: [0.03] Kinetic Theory of Gases and Radiation
Derive an expression for energy stored in a capacitor.
Chapter: [0.08] Electrostatics
A spherical metal ball of radius 15 cm carries a charge of 2μC. Calculate the electric field at a distance of 20 cm from the center of the sphere.
Chapter: [0.08] Electrostatics
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