Transfer of Heat

INTRODUCTIONSimply heat is the sum of kinetic energy of atoms or molecules. In thermodynamics, heat means energy which is moved between two things when one of them is hotter than the other.Heat ene...

Heat Pumps and Refrigerators

Heat Pumps and RefrigeratorsIn a heat engine, the direction of energy transfer is from the hot reservoir to the cold reservoir, which is the natural direction. The role of the heatthe engine is to ...

NEB Model Question PHYSICS XI

NEB MODEL QUESTION FOR PHYSICSClass: 11For: 2070Time : 3 hrsFull Marks: 75Pass marks: 27Group ‘A’ Q.1. Answer in brief, any SIX questions. [2 X 6 = 12] (a) What is the difference between accurate a...

NEB Grade 12 Physics model question with solution

Grade 12 Physics model Question and its Solution (New Syllabus)Group A: Multiple Choice Questions (11 × 1 =11)1. Which of the following is a correct formula for calculating the radius of gyration ...

PLANT ANATOMY

The study of internal structure of plants is called plant anatomy. Tissue is a group of similar cells which performs one or more particular functions. Depending upon the dividing capacity, the tiss...