(a) (30, 45, 60 degree) and 1 cm (b) 30, 45, 60) and 6cm (c) 20, 50 , 80) an 2 cm (d) 20, 50, 80 degree) and 5cm out of these the best choices is that of student (a) A (b) B (c) C (d) D
Answer : The best choice is that of student B.
So, answer is (b)
This is because usually we prefer the angle of incidence to be between 300 and 600, and 30, 40 and 60 are the most comon angles used. Also, the minimum distance between two pins must always be at least 5 cm.
SUMMATIVE ASSESSMENT-II Experiments for Science Lab Theory and practical for CBSE Class 10th