: AKU Previous Year Question Paper

Preparing for AKU exams requires thorough practice and understanding of the types of questions asked in previous years. This collection of AKU previous year questions and answers covers all major subjects to help students prepare effectively. Clear answers are provided for each question to ensure easy understanding and learning.

Physics

Question: What is Newton’s First Law of Motion?

Answer: Newton’s First Law states that an object will remain at rest or in uniform motion unless acted upon by an external force.

Question: Define the term ‘work’ in physics.

Answer: Work is defined as the product of force and displacement in the direction of the force.

Question: What is the formula for acceleration?

Answer: The formula for acceleration is , where v is the final velocity, u is the initial velocity, and t is the time taken.

Question: Explain the concept of kinetic energy.

Answer: Kinetic energy is the energy possessed by a body due to its motion and is given by , where m is mass and v is velocity.

Question: What is the unit of electric current?

Answer: The unit of electric current is the ampere (A).

Question: State Ohm’s Law.

Answer: Ohm’s Law states that the current flowing through a conductor is directly proportional to the voltage across it, provided the temperature remains constant.

Question: Define simple harmonic motion.

Answer: Simple harmonic motion is a type of periodic motion where the restoring force is directly proportional to displacement and acts in the opposite direction.

Question: What is the speed of light in a vacuum?

Answer: The speed of light in a vacuum is approximately meters per second.

Question: Explain the concept of refraction.

Answer: Refraction is the bending of light as it passes from one medium to another with a different refractive index.

Question: What is the principle of conservation of energy?

Answer: The principle of conservation of energy states that energy can neither be created nor destroyed, only transformed from one form to another.

Question: Define electric potential.

Answer: Electric potential is the amount of work done in bringing a unit positive charge from infinity to a point in an electric field.

Question: What are the laws of thermodynamics?

Answer: The laws of thermodynamics describe the principles of energy transfer and include the zeroth, first, second, and third laws.

Question: What is the formula for gravitational force?

Answer: The formula for gravitational force is , where G is the gravitational constant, and are masses, and r is the distance between them.

Question: What is electromagnetic induction?

Answer: Electromagnetic induction is the process of generating an electromotive force (EMF) by changing the magnetic flux through a conductor.

Question: Define capacitance.

Answer: Capacitance is the ability of a system to store electric charge per unit voltage and is measured in farads (F).

Question: What is the Doppler effect?

Answer: The Doppler effect refers to the change in frequency or wavelength of a wave in relation to an observer moving relative to the source.

Question: Explain the concept of torque.

Answer: Torque is a measure of the rotational force applied to an object, given by , where r is the lever arm and F is the force.

Question: What is the unit of frequency?

Answer: The unit of frequency is the hertz (Hz).

Question: State Kirchhoff’s laws.

Answer: Kirchhoff’s laws include the current law (KCL) and voltage law (KVL), which govern the flow of current and voltage in electrical circuits.

Mathematics

Question: What is the Pythagoras theorem?

Answer: The Pythagoras theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

Question: Define a quadratic equation.

Answer: A quadratic equation is a polynomial equation of degree two and is of the form , where a, b, and c are constants.

Question: What is the derivative of ?

Answer: The derivative of is .

Question: State the formula for the area of a circle.

Answer: The formula for the area of a circle is , where r is the radius.

Question: Define probability.

Answer: Probability is the measure of the likelihood of an event occurring and is calculated as the ratio of favorable outcomes to total outcomes.

Question: What is the value of ?

Answer: The value of is approximately 3.14159.

Question: Solve .

Answer: .

Question: Define a matrix.

Answer: A matrix is a rectangular array of numbers arranged in rows and columns.

Question: What is the formula for the sum of an arithmetic series?

Answer: The formula for the sum of an arithmetic series is , where n is the number of terms, a is the first term, and l is the last term.

Question: Find the derivative of .

Answer: The derivative of is .

Question: Define integration.

Answer: Integration is the process of finding the integral of a function, which represents the area under its curve.

Question: What is the formula for the volume of a cylinder?

Answer: The formula for the volume of a cylinder is , where r is the radius and h is the height.

Question: Solve .

Answer: .

Question: What is a tangent?

Answer: A tangent is a straight line that touches a curve at one point without crossing it.

Question: Define a prime number.

Answer: A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Question: What is the formula for the circumference of a circle?

Answer: The formula for the circumference of a circle is , where r is the radius.

Question: Define logarithm.

Answer: A logarithm is the power to which a number must be raised to obtain another number.

Question: Solve .

Answer: .

Question: What is the formula for the slope of a line?

Answer: The formula for the slope of a line is .

Chemistry

Question: What is the atomic number of hydrogen?

Answer: The atomic number of hydrogen is 1.

Question: Define a molecule.

Answer: A molecule is a group of two or more atoms bonded together chemically.

Question: What is the pH scale?

Answer: The pH scale measures the acidity or basicity of a solution, ranging from 0 to 14.

Question: What is the chemical formula for water?

Answer: The chemical formula for water is H₂O.

Question: What are noble gases?

Answer: Noble gases are inert elements in Group 18 of the periodic table, including helium, neon, and argon.

Question: Define an acid.

Answer: An acid is a substance that donates hydrogen ions (H⁺) in a solution.

Question: What is the molar mass of oxygen?

Answer: The molar mass of oxygen is approximately 16 g/mol.

Question: Define an isotope.

Answer: Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons.