A watch which gains uniformly is 2 minutes sl | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The total time interval from Monday $12$ noon to the following Monday $2$ p.m. is $7$ days and $2$ hours,which equals $170$ hours.The total gain i

Vedclass · Accepted Answer

$2$ p.m. on Wednesday

Vedclass · Answer

(B) The total time interval from Monday $12$ noon to the following Monday $2$ p.m. is $7$ days and $2$ hours,which equals $170$ hours.The total gain in time is $2$ minutes (to reach zero error) $+ 4$ minutes $48$ seconds (to reach the fast state).$4$ minutes $48$ seconds $= 4 + \frac{48}{60} = 4 + \frac{4}{5} = \frac{24}{5}$ minutes.Total gain $= 2 + \frac{24}{5} = \frac{34}{5}$ minutes in $170$ hours.To be correct,the watch must gain $2$ minutes.Time taken to gain $2$ minutes $= \frac{170}{(34/5)} 	imes 2 = \frac{170 	imes 5 	imes 2}{34} = 5 	imes 5 	imes 2 = 50$ hours.$50$ hours $= 2$ days and $2$ hours.Starting from Monday $12$ noon,$2$ days and $2$ hours later is Wednesday $2$ p.m.

$A$ watch which gains uniformly is $2$ minutes slow at noon on Monday and is $4$ minutes $48$ seconds fast at $2$ p.m. on the following Monday. When was it correct?

Similar Questions

At what time between $3$ and $4$ o'clock are the hands of a clock together?

An accurate clock shows $8$ o'clock in the morning. Through how many degrees will the hour hand rotate when the clock shows $2$ o'clock in the afternoon (in $^{\circ}$)?

How much does a watch gain or lose per day,if its hands coincide every $64$ minutes?

Mahatma Gandhi was born on October $2, 1869$. The day of the week was

How many times in a day,are the hands of a clock in a straight line but opposite in direction?

Vedclass Test Series

Exam Paper Generator

Online Exam Module