Curriculum-aligned Physics questions for Class 11 under CBSE. Shortlist topics, practice at your pace, and make every answer count.
A metal rod is subjected to a tensile force, causing it to stretch. Analyze the relationship between the stress and strain on the rod, and explain how the elastic energy is stored in the rod. Discuss the concept of elastic energy and how it relates to the mechanical properties of solids, including Young's modulus and the bulk modulus.
A string is fixed at both ends and vibrates in a standing wave pattern. Describe the characteristics of standing waves, including the nodes and antinodes, and explain how the frequency and wavelength of the wave are related. Discuss the conditions under which standing waves can be produced, and provide examples of real-world situations where standing waves are observed.
A heat engine operates on a cycle, taking in heat energy from a high-temperature source and rejecting heat energy to a low-temperature sink. Describe the basic components of a heat engine, including the heat source, heat sink, and working substance. Explain how the heat engine converts thermal energy into mechanical energy, and discuss the factors that affect its efficiency.
An ideal gas is confined to a container with a movable piston. The gas is heated, causing the piston to rise. Analyze the relationship between the pressure and temperature of the gas, and explain how the kinetic theory of gases can be used to describe this process. Discuss the assumptions of the kinetic theory and how they relate to the behavior of the gas in this scenario.
A car is traveling in a straight line, and its position is given by the equation x(t) = 2t^2 + 3t + 1, where x is the position in meters and t is the time in seconds. Describe the car's motion, including its position, path length, and displacement, over the time interval from t = 0 to t = 5 seconds. Use graphical representation to support your explanation.
A thermometer is used to measure the temperature of a liquid. If the temperature of the liquid is 50°C and the thermometer reads 48°C, what can be inferred about the thermometer's calibration? Discuss the concept of temperature and heat in relation to the thermometer's reading, and explain how this discrepancy can be accounted for.
A car is moving in a circular track of radius 50m. If the car takes 20s to complete one lap, find the angular velocity and centripetal acceleration of the car.
What is the number of degrees of freedom of a diatomic molecule?
The speed of a wave in a string is 20m/s. If the frequency of the wave is 5Hz, find the wavelength of the wave.
A wire of length 2m and area of cross-section 0.1mm^2 is stretched by a force of 100N. If Young's modulus of the wire is 2 x 10^11 N/m^2, find the stress and strain in the wire.
A rod of length 1m is pivoted at one end. Find the position of the centre of mass of the rod.
What is the function of a refrigerator?
What are the types of waves?
What is the centre of mass of a system of particles?
How are vectors added?
What are significant figures?
What is the bulk modulus of a substance?
What is the purpose of calorimetry?
What is the work-energy theorem?
Which of the following is a characteristic of simple harmonic motion?