More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
Physics English Medium Fsc Part 1 Chapter 8 Online MCQs Test MCQs With Answers
Question # 1
If a stretched string 4 m long and it has 4 loops of stationary waves, then the wave length is.
Choose an answer
1m
2 m
3 m
4 m
Previous
Skip
Next
Question # 2
Two tuning forks of frequencies 240 Hz and 243 Hz are sounded together, the number of beats per second is.
Choose an answer
Zero
2
3
4
Previous
Skip
Next
Question # 3
Half wavelength corresponds to
Choose an answer
0
o
90
o
180
o
360
o
Previous
Skip
Next
Question # 4
The experimental value for the velocity of sound in air is
Choose an answer
233 m-sec
-1
333 m-sec
-1
433 m-sec
-1
533 m-sec
-1
Previous
Skip
Next
Question # 5
Two waves of same frequency and moving in the same direction produces.
Choose an answer
Interference
Diffraction
Beats
Stationary waves
Previous
Skip
Next
Question # 6
Sound travel faster in
Choose an answer
CO2
H2
O2
He
Previous
Skip
Next
Question # 7
Speed of sound in copper is
Choose an answer
38000 ms-1
3600 ms-1
3500 ms-1
3400 ms-1
Previous
Skip
Next
Question # 8
On loading the prong of a tuning fork with wax, the frequency of sound.
Choose an answer
Increases
Decreases
Remains same
First increases then decrease
Previous
Skip
Next
Question # 9
In stationary waves, the particle velocity at nodes is
Choose an answer
Minimum
Maximum
Zero
Constant
Previous
Skip
Next
Question # 10
According to Newton's formula, the speed of sound in air at STP is
Choose an answer
332 ,ms-1
340 ms-1
350 ms-1
280 ms-1
Previous
Skip
Next
Question # 11
If 20 waves passes through he medium in 2 sec of 10 ms-1 then he wavelength is.
Choose an answer
200 m
2 m
1 m
0.5 m
Previous
Skip
Next
Back