This page requires a JavaScript-enabled browser
Instructions on how to enable your browser are contained in the help file.
Physics Class 11 - Chapter 8
WavesTest - 5
1.
Waves produce at the surface of water by a pencil executing vibrating motion if held vertically at a frequency of 50 kHz are?
a) Transverse waves
b) Periodic
c) Both periodic and transverse
d) Longitudinal waves
2.
Which phenomena can be applied to estimate the velocity of stars?
a) Beats
b) Interference
c) All of these
d) Doppler’s effect
3.
The beats frequency for a human car is?
a) 7Hz
b) 250Hz
c) 42Hz
d) 15Hz
4.
For destructive e interference the path difference between interfering sound will be?
a) n+1/2 lambda
b) none of these
c) may be both
d) n lambda
5.
In case of stationary waves the open end acts as?
a) Both of these
b) Node
c) Not specified
d) Antinode
6.
The speed of stationary waves in a stretched string are independent of?
a) Both a and c
b) Point where string is plucked
c) Number of loops
d) Tension in the string
7.
Newton estimates the speed of sound?
a) 281m/s
b) 333m/s
c) 340m/s
d) 332m/s
8.
Fundamental frequency of stationary waves in open pipe is time the closed pipe?
a) Ten
b) Two
c) Four
d) One
9.
Which one is the application of Doppler’s effect?
a) Bats
b) All of these
c) Sonar devices
d) Radar
10.
In closed organ pipe?
a) May be even or odd
b) Both of these
c) Only odd harmonics
d) Only even harmonics
This is more feedback!
This is the feedback!
