G10A- EOT 2024-25

Examination Details

  • Ministry of Education: United Arab Emirates

  • Grade: 10 (Advanced)

  • Term: 1 EOT 2024-25

  • MCQs: 15

  • Duration: 150 minutes (2 hours and 30 minutes)

  • Overall Grade: 100

  • FRQs: 4 (Marks per FRQ: 8)

  • Mode of Implementation: SwiftAssess & Paper-Based

Key Concepts in Physics

Simple Pendulum

  • Definition: A simple pendulum consists of a massive bob suspended from a string or light rod.

  • Forces Acting on the Pendulum:

    • Tension Force (FT): Force exerted by the string or rod.

    • Gravity (Fg): Force of gravity acting downward on the bob.

  • Restoring Force: The component of gravitational force in the direction of the pendulum's circular path, which causes the pendulum to swing.

  • Position Analysis:

    • At maximum displacement, restoring force is maximum and velocity is zero.

    • At equilibrium position, restoring force is zero and velocity is maximum.

  • Acceleration: The acceleration of the pendulum is directly proportional to the displacement.

  • Equation: Period (T) of simple pendulum:

    • T = 2π√(L/g)

      • Where:

        • T = period (time for one oscillation)

        • L = length of the pendulum (m)

        • g = acceleration due to gravity (m/s²)

Resonance and Amplitude

  • Definition: Resonance occurs when the amplitude of vibration increases due to matching vibrations of an external force.

  • Applications: Used in musical instruments to amplify sound.

  • Factors:

    • Depends on frequency and does not depend on mass.

Hooke's Law

  • Definition: The force exerted by a spring is proportional to its displacement.

  • Formula:

    • F_s = -kx

      • Where:

        • F_s = spring force (N)

        • k = spring constant (N/m)

        • x = displacement (m)

  • Energy Considerations:

    • Elastic potential energy stored in the spring:

      • PE = 1/2 kx²

Wave Properties

  • Types of Waves:

    • Transverse Waves: Disturbance is perpendicular to wave direction.

    • Longitudinal Waves: Disturbance is parallel to wave direction.

    • Surface Waves: Particles move in circular paths, both parallel and perpendicular.

  • Wave Characteristics: Wavelength, frequency, period, amplitude, speed.

  • Speed of Wave:

    • v = fλ

      • Where:

        • v = velocity (m/s)

        • f = frequency (Hz)

        • λ = wavelength (m)

Electric Charge and Electric Fields

  • Concepts: Electric charges, Coulomb's law, charging methods (conduction, induction, grounding).

  • Properties: Like charges repel, unlike charges attract.

  • Electrostatic Forces:

    • The electrostatic force between two charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

    • Formula: F = k(q_1q_2/r²)

  • Electric Field:

    • Created by an electric charge; defined as the force per unit charge.

    • Electric field lines show direction and strength (closer lines = stronger field).

Doppler Effect

  • Definition: Change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.

  • Illustration: Object moving towards observer increases frequency; moving away decreases frequency.

  • Real-life Applications: Used in radar, medical ultrasound, and astronomy.

Example Problems

  1. Pendulum Length Calculation: Calculate the period of a pendulum of length 1m on Earth (g = 9.81 m/s²).

  2. Spring Constant: Given F_s and x, calculate k using Hooke's Law.

  3. Wave Frequency Calculation: Determine the frequency of a wave with a period of 0.4s.

  4. Doppler Effect Frequency: Calculate the perceived frequency when a source moves toward an observer.