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NCERT class-11 Physics Chapter 9 Mechanical Properties of Solid Summary: Questions And Answers: 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 and cross-sectional area of 4.0 × 10–5 m2 under a given load. What is the ratio of the Young’s … Read more
NCERT class-11 Physics Chapter 8 Gravitation Summary: Questions And Answers: Question1. 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 matter by putting it inside a hollow sphere or by some other means?b. An astronaut … Read more
NCERT class-11 Physics Chapter 7 System of Particles and Rotational Motion Summary: Questions And Answers: 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 mass of a body necessarily lie inside the body? Solution :In all … Read more
NCERT class-11 Physics Chapter 6 Work, Energy, and Power Summary: Questions And Answers Question1. The sign of work done by a force on a body is important to understand. State carefully if the following quantities are positive or negative:a. work done by a man in lifting a bucket out of a well by means of a … Read more
NCERT class-11 Physics Chapter 5 Laws of Motion Summary Questions And Answers Question1. Give the magnitude and direction of the net force acting ona. a drop of rain falling down with a constant speed,b. a cork of mass 10 g floating on water,c. a kite skillfully held stationary in the sky,d. a car moving with … Read more
NCERT Class 11 Physics Chapter 4: Motion In A Plane Summary Questions And Answers Question1. 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, angular velocity. Solution :Scalar: Volume, mass, speed, density, number of moles, angular frequencyVector: Acceleration, velocity, … Read more
NCERT Class 11 Physics Chapter 3: Motion In A Straight Line Summary Questions And Answers 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 stations.b. a monkey sitting on top of a man cycling smoothly on a circular track.c. … Read more
Summary of NCERT Class 11 Physics Chapter 2: Units and Measurements Questions And Answers Question1. Fill in the blanksa. The volume of a cube of side 1 cm is equal to…..m3b. The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm is equal to … (mm)2c. A vehicle moving with … Read more
Chapter 1 of NCERT Class 11 Physics, titled “Physical World,” introduces students to the fascinating world of physics and its significance in understanding the universe. Here’s a summary of the chapter: Summary Of The Chapter Question1. Albert Einstein proposed some of the most important statements on the way science works. What was Einstein trying to … Read more
NCERT Class 12 Physics Chapter 1 Electric Charges And Fields Summary: Questions And Answers: NCERT Class 12 Physics Chapter 1 Electric Charges And Fields Question1.1 What is the force between two small charged spheres having charges of 2 × 10−7 C and 3 × 10−7 C placed 30 cm apart in air? Answer: Repulsive force of magnitude 6 … Read more