- Messages
- 380
- Reaction score
- 16
- Points
- 28
-
We need your support!
We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
physics mcq plz helpppppppppppppppppppppp
- Thread starter zahraahmed
- Start date
- Messages
- 4
- Reaction score
- 0
- Points
- 11
acc to me da ans wud b D.1400 Hz
is it ryt???
is it ryt???
- Messages
- 677
- Reaction score
- 190
- Points
- 53
There are 8 waves in 6cm... Then 1 wave will cover 6/8 cm ....
1cm=10ms
6/8cm = 6/8 x (10/1000) = 7.5 x 10^-3 seconds.
Frequency = 1/T = 1/ (7.5 x 10^-3) = 133 Hz which is approximately equal to 140 Hz
1cm=10ms
6/8cm = 6/8 x (10/1000) = 7.5 x 10^-3 seconds.
Frequency = 1/T = 1/ (7.5 x 10^-3) = 133 Hz which is approximately equal to 140 Hz
- Messages
- 133
- Reaction score
- 47
- Points
- 38
beacon_of_light said:There are 8 waves in 6cm... Then 1 wave will cover 6/8 cm ....
1cm=10ms
6/8cm = 6/8 x (10/1000) = 7.5 x 10^-3 seconds.
Frequency = 1/T = 1/ (7.5 x 10^-3) = 133 Hz which is approximately equal to 140 Hz
dat's ri8