EXERCISES
Daring
# The v
10. The
(c) angry Gods
1. Like
A Multiple Choice Questions
Select the correct option:
1. Atmospheric electricity was discovered by
(a) Thales
(b) Newton
(c) Benjamin Franklin
(a) William Gilbert
2. Lightning occurs because of
(a) wind
(b) rain
(d) electric discharge
3. Electric charges are
(a) only positive
(b) only negative
(c) insulators
(d) either positive or negative
4. When a glass rod is rubbed with a piece of silk cloth the rod
(a) and the cloth both acquire positive charge.
(b) becomes positively charged while the cloth has a negative charge.
(c) and the cloth both acquire negative charge.
(d) becomes negatively charged while the cloth has a positive charge.
5. We hear a thunder because
(a) a lot of charges go in lightning.
(b) because lightning is very bright.
(c) because air heats up and expands all of a sudden during lightning.
(a) clouds hang against each other.
SA
6. F2
9. M
10. 1
B-80 SOME NATURAL PHENOMENA
Answers
The probability formula is defined as the possibility of an event to happen is equal to the ratio of the number of favourable outcomes and the total number of outcomes. Probability of event to happen P(E) = Number of favourable outcomes/Total Number of outcomes.The probability formula is defined as the possibility of an event to happen is equal to the ratio of the number of favourable outcomes and the total number of outcomes. Probability of event to happen P(E) = Number of favourable outcomes/Total Number of outcomes.The probability formula is defined as the possibility of an event to happen is equal to the ratio of the number of favourable outcomes and the total number of outcomes. Probability of event to happen P(E) = Number of favourable outcomes/Total Number of outcomes.The probability formula is defined as the possibility of an event to happen is equal to the ratio of the number of favourable outcomes and the total number of outcomes. Probability of event to happen P(E) = Number of favourable outcomes/Total Number of outcomes.The probability formula is defined as the possibility of an event to happen is equal to the ratio of the number of favourable outcomes and the total number of outcomes. Probability of event to happen P(E) = Number of favourable outcomes/Total Number of outcomes.The probability formula is defined as the possibility of an event to happen is equal to the ratio of the number of favourable outcomes and the total number of outcomes. Probability of event to happen P(E) = Number of favourable outcomes/Total Number of outcomes.The probability formula is defined as the possibility of an event to happen is equal to the ratio of the number of favourable outcomes and the total number of outcomes. Probability of event to happen P(E) = Number of favourable outcomes/Total Number of outcomes.