a simple electroscope | class 8 science activity 15.4 | make from home things | #halfmindart

Anjali an EVS teacher of class V gives an activity to children. The activity was to makes salad from fruit and vegetables. What was Anjali's objective behind this activity ?

In a class there are 10 boys and 8 girls.The teacher wants to select either a boy or a girl to represent the class in a function.The number of ways the teacher can make this selection.

The activity of a radioactive sample initially is 3200 dps and after 8hours activity is 100 dps. What will be the activity after 4.8hr from start in dps?