Question

It takes the pendulum of a clock 7 seconds to strike 4 o’clock. How much time will it take to strike 11 o’clock?
(a) 18 seconds
(b) 20 seconds
(c) 19.25 seconds
(d) 23.33 seconds

Answer 1

c).19.25 second it will take to strike
since 4————7second
11----------7×11/4
=77/4
=19.25seconds

Answer 2

Answer:

19.25 seconds

Step-by-step explanation

:It takes the pendulum of a clock 7 seconds to strike 4 o’clock. How much time will it take to strike 11 o’clock?

Pendulum take 7 secs to strike 4 o clockto strike

4 o clock pendulum need to oscillate 4 timeso to strike

1 o clock pendulum need to oscillate 1 time = 7/4 = 1.75 secTo Strike

11 o clock pendulum need to oscillate 11 times

so time taken = 11 * 1.75= 19.25 sec

option c is correct