Physics Exam: 11th Grade

• The physics exam is for Class 11th.
• The exam duration is 3 hours.
• The maximum marks for the exam are 70.
• All questions are compulsory.

Exam Sections

• Section A has 10 very short answer questions, each worth 1 mark (1x10 = 10 marks).
• Section B contains 9 very short answer questions, each worth 2 marks, to be answered in 20-30 words (2x9 = 18 marks).
• Section C contains 9 short answer questions, each worth 3 marks, to be answered in 50-70 words (3x9 = 27 marks).
• Section D contains 3 long answer questions, each worth 5 marks, to be answered in 100-150 words (5x3 = 15 marks).
• Use of log tables is allowed if necessary.
• Use of scientific calculators is not allowed.

Section A Topics

• Position-time graph for a body in uniform motion.
• Dimensional formula for the gravitational constant.
• The position vector of a particle in circular motion sweeps out equal area in equal time.
• Work done by an external force on a system equals the change in total energy.
• Center of mass of the Earth-Moon system's location.
• Value of g (acceleration due to gravity) is maximum at the poles.
• In the relation E = 6T⁴, "6" is called Stefan's constant.
• For a heat engine to have 100% efficiency, the temperature of the sink must be 0°K.
• If the volume of a gas is increased by 4 times, at constant pressure, the temperature must be increased four times.
• Potential energy of a simple pendulum is maximum at the extreme position.

Section B Topics

• Determining the most accurate measurement among given options.
• Using dimensional analysis to convert 1 Newton into dyne.
• Calculating the kinetic energy of a body after 10 seconds, given a force of 3000 dyne acting on a mass of 300 g for 10 seconds.
• Explanation of why angular momentum is conserved in the rotation of an electron around the nucleus and planets around the Sun.
• Determining the potential energy of an artificial satellite moving in a circular orbit around the Earth, given its total energy E.
• Stating the second law of thermodynamics.
• Finding the root mean square velocity of smoke particles in Brownian motion at N.T.P.
• Calculating the speed of the transverse wave in a steel wire under tension.

Section C Topics

• Deriving the relationship for the time period of a simple pendulum.
• Calculating the retardation of a car brought to rest and the time it takes to stop.
• Calculating the angle of banking for a curved road to safely travel a vehicle.
• Stating Newton's three laws of motion.
• Calculating the electric power consumed by a pump to fill a tank.
• Stating the law of conservation of angular momentum.
• Stating and explaining Kepler's three laws of planetary motion.
• Discussing the three limitations of Bernoulli's Theorem.
• Importance of the second law of thermodynamics.
• Writing the postulates of the kinetic theory of gases.

Section D Topics

• Defining projectile motion and derive expressions for max height, time of flight and horizontal range.
• Finding the time and height of a body's fall if it travels half its path in the last second, starting from rest.
• Defining Young's modulus of elasticity, its units, and how to measure it experimentally.
• Explaining Wein's displacement law and its applications.
• Deriving the expression for average kinetic energy of a particle executing Simple Harmonic Motion.
• Defining what wave motion is and describing the characteristics of wave motion.

Physics exam for 11th-grade students. The exam includes multiple sections with varying question types and marks. Topics range from motion graphs and dimensional formulas to energy and thermodynamics.