The least count of a stopwatch is 1 5 second

Asked by admin @ 04/08/2021 in Physics viewed by 313 People

The least count of a stop watch is 1/5 second the time of 20 oscillation of a pendulum is measured to be 25 seconds the maximum percentage error in the meaaurment of time

Answered by admin @ 04/08/2021

Final. Answer :Maximum percentage error in time taken., = 0.8%

Steps :

1) Least count ,

$\Delta t =\frac{1}{5}=0.2s$

Time taken to complete 20 oscillations, T = 25 s

No. of Oscillations , N = 20

Percentage error in measurement of time ,

$\frac{\Delta T}{T}*100\% =?$

We shall find relative error,

$T = \frac{t}{N}\\ \\=> ln(T) = ln(\frac{t}{N})\\ \\=> ln(T) = ln(t)-ln(N) \\ \\=>\frac{\Delta T}{T}=\frac{\Delta t}{t}+0$

We get ,

$T=\frac{t}{N}\\ \\=\frac{\Delta T}{T}=\frac{\Delta t}{t}\\ \\=\frac{\Delta T}{T}*100 \%\\ \\ =\frac{\Delta t}{t}*100 \%\\ \\ = \frac{0.2}{25}*100 = 0.8\%$

Least count of spring balance

Asked by admin @ 24/08/2021 in Physics viewed by 371 persons

What is the least count of spring balance of motion 5N and 10N?

The least count of a stop watch is 1 5

Asked by admin @ 02/08/2021 in Physics viewed by 259 persons

The least count of a stop watch is 1/5 second the time of 20 oscillation of a pendulum is measured to be 25 seconds the maximum percentage error in the …

Least count of two screw gauges is same. then

Asked by admin @ 23/08/2021 in Physics viewed by 353 persons

Least count of two screw gauges is same then. (A) Number of circular divisionson them may be same(B) Number of circular divisionson them may be different(C) …

1 solar day is equal to how many seconds

Asked by admin @ 20/08/2021 in Physics viewed by 335 persons

One mean solar day is equal to how many seconds

5 stages of prophase 1 of meiosis with diagram

Asked by admin @ 17/08/2021 in Science viewed by 292 persons

With the help of suitable diagrams explain the 5 stages of prophase 1 of meiosis

4 x 5 x 2 x 7 x 1

Asked by admin @ 13/08/2021 in Math viewed by 343 persons

(4+x)(5-x)/(2+x)(7-x)=1 find answer

20 divided by 5 1 3

Asked by maham237 @ 17/02/2021 in Mathematics viewed by 297 persons

Divide the fractions: 20 divided by 15/16 =

5 x 1 3x 3

Asked by maham237 @ 23/02/2021 in Mathematics viewed by 388 persons

A.) If ∠3 = 5x - 1, and ∠5 = 3x + 11, then x = B.) If ∠3 = 5x - 1, and ∠5 = 3x + 11, then …

1 5 of 5 6

Asked by maham237 @ 03/01/2021 in Mathematics viewed by 341 persons

5 divided by six is 5/6 what is 1/6 of 5

Solve x 9 x 5 x 4 1 0

Asked by admin @ 23/08/2021 in Math viewed by 450 persons

Solve this question which is from complex number

3 rational numbers between 1 4 and 1 5

Asked by admin @ 23/08/2021 in Math viewed by 339 persons

Find three rational numbers lying between 1/5 and 1/4. (By average method )

5 x 1 5 2 x 5 3 1

Asked by admin @ 12/08/2021 in Math viewed by 346 persons

Solve 5^{x+1} + 5^{2-x} = 5^{3} +1

Divide x4 3x2 4x 5 by x2 1 x

Asked by admin @ 16/08/2021 in Math viewed by 602 persons

Divide x4-3x2+4x+5 by x2-x+1. Find quotient and remiander

Divide 3x2 x3 3x 5 by x 1 x2

Asked by admin @ 12/08/2021 in Math viewed by 322 persons

Divide 3x2 ‒ x3 ‒ 3x + 5 by x ‒ 1 ‒ x2 and verify the division algorithm.

Rahul can finish 1 5 of his homework

Asked by admin @ 29/08/2021 in Math viewed by 345 persons

Rahul can finish one-fifth of his homework in one hour. Neha can finish threeseventh of her homework in one hour thirty minutes and riya can finish three fourth of her …