Physics MCQs: Chapter 8+9

1) The minimum length of an open end organ pipe to set up stationary waves is

a)    v/2f

b)   2v/f

c)    v/f

d)   1vf

2) It is desired to increase the frequency of a vibrating string form 50 hertz to 200 hertz. This can be done by increasing the tension of the string

a)    4 times

b)   8 times

c)    16 times

d)   None of these

3) The ratio of the fundamental frequency of an open end and closed end organ pipe of the same length is

a)    2:1

b)   1:2

c)    1:1

d)   4:1

1.a

2.c

3.a