# NCERT Solutions for Class 11 Physics in PDF form

NCERT Solutions for Class 11 Physics in PDF form free download. NCERT solutions for other subjects of 11th class (UP Board intermediate from 2020 – 2021 onward) are also available in the same format to download with any login and password. Solutions are base on new CBSE curriculum for 2020 – 2021. ## NCERT Solutions for Class 11 Physics

Download NCERT solutions for 11th class physics in PDF form. Revision books provides a better preparation of exams after completing the NCERT books. The complete syllabus is divided into 10 units for revision. So must see these units: Unit 1, Unit 2, Unit 3, Unit 4, Unit 5, Unit 6, Unit 7, Unit 8, Unit 9 and Unit 10.

1. Work, Energy and Power
2. System of Particles and Rotational Motion
3. Gravitation
4. Mechanical Properties of Solids
5. Mechanical Properties of Fluids

#### SI System of Units (Systeme Internationale)  – Know this !!!

The international system of units was accepted in 1971 by the 14th general conference on Weights and Measures under the leadership of International Bureau of Weights and Measures, located at Paris in France. Seven quantities are accepted as fundamental quantities. These are as follows:

1. Length (measured in metre and denoted by m): The metre is the length of the path traveled by light in vacuum during a time interval of 1/299792458 of a second. – 1983
2. Mass (measured in kilogram and denoted by kg): The kilogram is equal to the mass of the international prototype of the kilogram (a platinum – iridium alloy cylinder) kept at international Bureau of Weights and Measures, at Serves, near Paris, France – 1889
3. Time (measured in second and denoted by s): The second is the duration of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the Cesium – 133 atom. – 1967
4. Electric Current (measured in ampere and denoted by A): The ampere is that constant which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section and placed 1 metre apart in vacuum, would produce between these conductors a force equal to 2×10^-7 newton per metre of length. – 1948
5. Thermodynamic Temperature (measured in kelvin and denoted by K): The kelvin is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water. – 1967
6. Amount of Substance (measured in mole and denoted by mol): The mole is the amount of substance of a system, which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon – 12. – 1971
7. Luminous Intensity (measured in candela and denoted by cd): The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 54 × 10 ^ 12 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian. – 1979