CBSE Class 12 Physics Solids and Fluids Solved Problems

Read and download free pdf of CBSE Class 12 Physics Solids and Fluids Solved Problems. Students and teachers of Class 12 Physics can get free advanced study material, revision notes, sure shot questions and answers for Class 12 Physics prepared as per the latest syllabus and examination guidelines in your school. Class 12 students should download this study material which will give them more knowledge for all chapters in Physics and all important topics which are scoring and can get you more marks. Students should also download free pdf of Chapter wise Notes for Class 12 Physics prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this year and also download free worksheets and question papers available here to get higher scores in school exams and tests, also click here for more Study Material for Class 12 Physics

Study Material for Class 12 Physics Solids and Fluids

Class 12 Physics students should refer to the following Pdf for Solids and Fluids in Class 12. These notes and test paper with questions and answers for Class 12 Physics will be very useful for exams and help you to score good marks

Class 12 Physics Solids and Fluids

CBSE Class 12 Physics Solids and Fluids Solved Problems. Please refer to the examination notes which you can use for preparing and revising for exams. These notes will help you to revise the concepts quickly and get good marks.

Ex.1. A light rod of length 200 cm is suspended from the ceiling horizontally by means of two vertical wires of equal length tied to its ends. One of the wires is made of steel and is of cross-section 0.1 sq cm and the other is of brass of cross-section 0.2 sq cm. Find the position along the rod at which a weight may be hung to produce (a) equal stresses in both wires and (b) equal strains in both wires. (Ybrass = 10 × 1011 dynes/cm2. Ysteel = 20 × 1011 dynes/cm2.

class_12_physics_useful_0220

Ex.2. A steel wire of diameter 0.8 mm and length 1 m is clamped firmly at two points A and B which are 1 m apart and in the same horizontal plane. A body is hung from the middle point of the wire such that the middle point sags 1 cm lower from the original position. Calculate the mass of the body. Given
Young’s modulus of the material of wire = 2 × 1012 dynes/cm2.

Sol.: Let the body be hung from the middle point C so that it sags through 1 cm to the point D as shown in
the figure

class_12_physics_useful_0221

Ex.3. A rod AD, consisting of three segments AB, BC and CD joined together, is hanging vertically from a fixed support at A. The lengths of the segments are respectively 0.1 m, 0.2 m and 0.15 m. The crosssection of the rod is uniformly equal to 10–4 m2. A weight of 10 kg is hung from D. Calculate the displacements of the points B, C and D using the data on Young’s moduli given below (neglect the weight of the rod). YAB = 2.5 × 1010 N/m2, YBC = 4.0 × 1010 N/m2 and YCD = 1.0 × 1010 N/m2.

class_12_physics_useful_0222

Please click on below link to download pdf file for CBSE Class 12 Physics Solids and Fluids Solved Problems.

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