Class 11 – Physics Chapter 15 – Waves Question :1 : A string of mass 2.50 kg is under a tension of 200 N. The length of the stretched string is 20.0 m. If the transverse jerk is struck at…

Class 11 – Physics Chapter 14 – Oscillations Question : 1. Which of the following examples represent periodic motion? (a) A swimmer completing one (return) trip from one bank of a river to the other and back. (b) A freely…

Class 11 – Physics Chapter 13 – Kinetic Theory Question : 1. Estimate the fraction of molecular volume to the actual volume occupied by oxygen gas at STP. Take the diameter of an oxygen molecule to be 3 Å. Answer…

Class 11 – Physics Chapter 12 – Thermodynamics Question :1. A geyser heats water flowing at the rate of 3.0 litres per minute from (27 °C to 77 °C) If the geyser operates on a gas burner, what is the…

Class 11 – Physics Chapter 11 – Thermal Properties of Matter Question :1. The triple points of neon and carbon dioxide are 24.57 K and 216.55 K respectively. Express these temperatures on the Celsius and Fahrenheit scales. Answer : Celsius…

Class 11 – Physics Chapter 10 – Mechanical Properties of Fluids Question :1. Explain why (a) The blood pressure in humans is greater at the feet than at the brain (b) Atmospheric pressure at a height of about 6 km…

Class 11 – Physics Chapter 9 – Mechanical Properties of Solids Question :1. A steel wire of length 4.7 m and cross-sectional area 3.0 × 10-5 m2 stretches by the same amount as a copper wire of length 3.5 m…

Class 11 – Physics Chapter 8 – Gravitation Question :1. Answer the following: (a) You can shield a charge from electrical forces by putting it inside a hollow conductor. Can you shield a body from the gravitational influence of nearby…

Class 11 – Physics Chapter 7 – Rotational Motion Question : 1: Give the location of the centre of mass of a (i) sphere, (ii) cylinder, (iii) ring, and (iv) cube, each of uniform mass density. Does the centre of…

Class 11 – Physics Chapter 5 – Laws of Motion Question :1. Give the magnitude and direction of the net force acting on (a) a drop of rain falling down with a constant speed, (b) a cork of mass 10…

Class 11 – Physics Chapter 4 -Motion In A Plane Question :1. State, for each of the following physical quantities, if it is a scalar or a vector: volume, mass, speed, acceleration, density, number of moles, velocity, angular frequency, displacement,…

Class 11 – Physics Chapter 3 – Motion In A Straight Line Question :1. In which of the following examples of motion, can the body be considered approximately a point object: (a) a railway carriage moving without jerks between two…