What do you understand by the following:(a) Century, (b) Shake, (c)

1.	What do you understand by the following:(a) Century, (b) Shake, (c) Lunar month, (d) Leap year, (e) Tropical year.
Answer» (a) It is the largest unit of time. 1 century = 100 years. (b) It is the smallest unit of time, 1 shake = 10^-8 sec. (c) It is the time taken by the moon to complete one revolution around the earth. 1 lunar month = 9.53 days. (d) A year which is divisible by 4 and in which the month of February is of 29 days is called leap year. (e) The year in which total solar eclipse takes place is called topical year.

What do you understand by the following:(a) Century, (b) Shake, (c) Lunar month, (d) Leap year, (e) Tropical year.

Answer»

(a) It is the largest unit of time. 1 century = 100 years.

(b) It is the smallest unit of time, 1 shake = 10^-8 sec.

(d) A year which is divisible by 4 and in which the month of February is of 29 days is called leap year.

(e) The year in which total solar eclipse takes place is called topical year.