General Quiz Structure Overview

Questions and Answers

What is the total number of marks for Section B?

12 marks

14 marks (correct)

10 marks

8 marks

How many questions does Section C include?

7 questions

6 questions

5 questions (correct)

8 questions

Which section of the question paper has the highest number of marks per question?

Section D (correct)

Section B

Section C

Section A

What type of questions does Section A consist of?

Very short answer type questions Signup and view all the answers

Which of the following statements about internal choices in the question paper is incorrect?

There are internal choices in every section. Signup and view all the answers

Which of these physical constants can be used in the question paper?

Boltzmann constant Signup and view all the answers

What is the mass of a neutron as provided in the question paper?

$1.675 imes 10^{-27}$ kg Signup and view all the answers

What is the allowed number of attempts for the internal choice in 2 questions of 2 marks each?

One question from each pair must be attempted. Signup and view all the answers

What is the expression for the speed of light in a medium with relative permittivity $oldsymbol{ ilde{ ext{ε}}_r}$ and relative magnetic permeability $oldsymbol{ ilde{ ext{μ}}_r}$?

$c = \frac{c_0}{\sqrt{\tilde{ε}_r \tilde{μ}_r}}$ Signup and view all the answers

Which type of electromagnetic waves are used in radar systems for aircraft navigation?

Microwaves Signup and view all the answers

In the decay reaction $oldsymbol{Y ightarrow X + He + ext{energy}}$, which particles are involved?

Alpha particle and daughter nucleus Signup and view all the answers

What is the significance of heavy doping in the p- and n-sides of a zener diode?

To ensure a sharp breakdown voltage characteristic Signup and view all the answers

What is the binding energy per nucleon for the daughter nucleus in the decay of nucleus Y?

7.835 MeV Signup and view all the answers

How is the speed of the emitted alpha particle calculated in the nuclear decay reaction?

By equating kinetic and binding energies Signup and view all the answers

Which value represents the mass of the alpha particle emitted during the decay of nucleus Y?

$6.68 \times 10^{-27} kg$ Signup and view all the answers

What is typically shown in the I-V characteristic of a zener diode used as a voltage regulator?

A vertical line at the zener breakdown voltage Signup and view all the answers

What does the magnetic dipole moment of a current carrying coil not depend on?

Material of the turns of the coil. Signup and view all the answers

What is the effect of a larger aperture of the objective lens in an astronomical telescope?

Increases the resolving power of the telescope. Signup and view all the answers

What is the refractive index of the liquid if a biconvex lens of glass with a refractive index of 1.47 becomes invisible in it?

1.47 Signup and view all the answers

For a glass prism, which color light has the smallest angle of minimum deviation?

Red color. Signup and view all the answers

Which statement is not correct according to the Rutherford model?

The nucleus contains only neutrons. Signup and view all the answers

What is the relationship between the refractive index and the brightness of an image in optics?

Variable refractive index can impact brightness under specific conditions. Signup and view all the answers

What impact does the number of turns of the coil have on its magnetic dipole moment?

Increases the magnetic dipole moment. Signup and view all the answers

How does the angle of minimum deviation vary for different colors of light passing through a prism?

Higher frequency colors deviate more. Signup and view all the answers

What is the expression for the equivalent emf when two identical cells are connected in parallel?

$E_{eq} = E$ Signup and view all the answers

What will be the effect on the voltage across an external resistance when the internal resistance of two identical cells is taken into account?

It decreases as R increases Signup and view all the answers

What is the expression for the magnetic moment (μ) of a circular coil?

$ u = NIr$ Signup and view all the answers

How can a galvanometer be converted into an ammeter to measure a higher current?

By adding a shunt resistor in parallel Signup and view all the answers

What is the phase difference between voltage across a resistor and a capacitor in an AC circuit?

90 degrees Signup and view all the answers

What happens to the interference fringes when the distance between the screen and slits in Young's double-slit experiment is increased?

Fringe width increases Signup and view all the answers

What is the result of increasing the separation between the slits in Young’s double-slit experiment?

Decreases fringe spacing Signup and view all the answers

When the source slit is moved closer to the plane of the double slits, what is the expected effect on the interference fringes?

Fringe separation decreases Signup and view all the answers

What is the expression for the potential energy of a system of two point charges q1 and q2 located at r1 and r2 in an external electric field E?

U = k * (q1 * q2) * E * (r1 + r2) Signup and view all the answers

What is the value of the electric field E for x < 0, based on the description provided?

-200 N/C Signup and view all the answers

If the length of the cylinder is 20 cm and radius is 5 cm, where is the center of the cylinder located?

At the origin Signup and view all the answers

To find the net outward flux through the cylinder, which integral would be most relevant?

∫ E · A dA Signup and view all the answers

What is the relationship between the charges present inside the cylinder and the net electric flux through it, according to Gauss's law?

The net charge is equal to the net flux divided by the electric constant. Signup and view all the answers

In the regions defined, how does the electric field behave in terms of direction and magnitude?

It is uniform and acts in opposite directions with equal magnitude. Signup and view all the answers

What type of cylinder is described, based on the orientation and positioning relative to the electric field?

A right circular cylinder Signup and view all the answers

Given the mass of the alpha particle is 6.4 × 10–27 kg, how would this mass relate to the force experienced in the electric field?

The mass affects the force according to F = ma. Signup and view all the answers

Study Notes

Examination Structure

Total of 37 compulsory questions in the paper.
Section A: Questions 1-20, very short answers, 1 mark each.
Section B: Questions 21-27, short answers, 2 marks each.
Section C: Questions 28-34, long answers, 3 marks each.
Section D: Questions 35-37, long answers, 5 marks each.
Internal options are provided for certain questions across different marks:
- 2 questions of 1 mark
- 2 questions of 2 marks
- 1 question of 3 marks
- All 3 questions of 5 marks.

Instructions and Permissibility

Each section has specific instructions.
Calculators and log tables are not allowed during the exam.

Physical Constants Values

Speed of light (c) = (3 \times 10^8 , \text{m/s})
Planck's constant (h) = (6.63 \times 10^{-34} , \text{Js})
Elementary charge (e) = (1.6 \times 10^{-19} , \text{C})
Permeability of free space ((\mu_0)) = (4\pi \times 10^{-7} , \text{T m A}^{-1})
Permittivity of free space ((\epsilon_0)) = (8.854 \times 10^{-12} , \text{C}^2 \text{N}^{-1} \text{m}^{-2})
Coulomb's constant = (\frac{1}{4\pi\epsilon_0} = 9 \times 10^9 , \text{N m}^2 \text{C}^{-2})
Mass of electron ((m_e)) = (9.1 \times 10^{-31} , \text{kg})
Mass of neutron = (1.675 \times 10^{-27} , \text{kg})
Mass of proton = (1.673 \times 10^{-27} , \text{kg})
Avogadro’s number = (6.023 \times 10^{23} , \text{per gram mole})
Boltzmann constant = (1.38 \times 10^{-23} , \text{JK}^{-1})

Key Questions

Understanding the conditions under the Rutherford model, particularly it's assertion that atoms are largely empty.
The computation of equivalent emf and internal resistance in a parallel cell configuration.
Establishing the magnetic moment of a coil and conditions affecting it.
Application of optics concepts, including normal behavior of lenses in varying mediums.
The interpretation of interference patterns as depicted in Young's double slit experiment.
Analysis of electric fields within defined regions and their effect on point charges.

Concepts in Focus

Magnetic field due to circular coils and their dependence on current, number of turns, and area.
The operation principles of a zener diode as a voltage regulator with appropriate I-V characteristics.
The dynamics of α-particle emission and calculation of speed based on binding energies.
Exploring the potential energy of charge systems in electric fields.

Calculations and Derivations

Required to derive expressions for peak voltage across resistors and capacitors in AC circuits.
Evaluate the effect of altering physical conditions on light dispersion through prisms.
Understanding and applying concepts of electric flux and charge distribution in conductive materials.

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Description

This quiz outlines the structure and types of questions included in a comprehensive question paper. It covers various sections, detailing very short, short, and long answer types, each with specified marks. Ideal for students wanting to understand the assessment format in detail.