**A Jiffy The American physical chemist Gilbert Newton Lewis (1875–1946) proposed a unit of time called the “jiffy.”According to Lewis, 1 jiffy = the time it takes light to travel one centimeter, (a) If you perform a task in a jiffy, how long has it taken in seconds? (b) How many jiffya are in one minute? (Use the fact that the speed of light is approximately 2.9979 x 108 m/s.)**

**Answer:**

**CONCEPT:**

The new unit proposed for time by the physical chemist is called as “jiffy”. It is equal to the time taken by light to travel a distance of 1 cm.

The relation for time taken in terms of distance and speed is

Here, **d** is distance and **v** is speed.

**SOLUTION:**

**(a)** The time taken by the task is measured in seconds as follows.

Convert the unit jiffy into seconds.

Therefore, the time taken by the task is measured in seconds is

**(b)** The number of jiffys in minute is calculated as follows.

Therefore, the number of jiffys in minute is