Default Title

Question (11)

QN0038633

Frequencies of sound produced from an organ pipe open at both ends are

(A)
only fundamental note
(B)
only odd harmonics
(C)
only even harmonics
(D)
even and odd harmonics

Correct Answer: A

Explanation:

Link:

Report Error

Question (12)

QN0038634

The fifth harmonic for vibrations of a stretched string is shown in figure. How many nodes are present here?

(A)
4
(B)
6
(C)
5
(D)
10

Correct Answer: A

Explanation:

Link:

Report Error

Question (13)

QN0038635

A closed organ pipe (closed at one end) is excited to support the third overtone. It is found that air in the pipe has

(A)
three nodes and three antinodes
(B)
three nodes and four antinodes
(C)
four nodes and three antinodes
(D)
four nodes and four antinodes

Correct Answer: D

Explanation:

Third overtone has a frequency , which means three full loops + one half loop, which would make four nodes and four antinodes.

Link:

Report Error

Question (14)

QN0038636

A string long and fixed at its ends is driven by a 240 vibrator. The string vibrates in its third harmonic mode. The speed of the wave and its fundamental frequency is:

(A)
(B)
(C)
(D)

Correct Answer: B

Explanation:

or

Velocity,

Also

Link:

Report Error

Question (15)

QN0038637

If and are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency of the string is given by

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

Total length of string

(As string is divided into three segments)

But frequency

so

Link:

Report Error

Question (16)

QN0038638

Tube has both ends open while tube has one end closed, otherwise they are identical. The ratio of fundamental frequency of tube and is

(A)
(B)
(C)
(D)

Correct Answer: C

Explanation:

Link:

Report Error

Question (17)

QN0038639

If the length of a stretched string is shortened by and the tension increased by then the ratio of the final and initial fundamental frequencies is

(A)
(B)
.
(C)
(D)

Correct Answer: D

Explanation:

Link:

Report Error

Question (18)

QN0038640

The number of possible natural oscillation of air column in a pipe closed at one end of length whose frequencies lie below are : (velocity of sound )

(A)
4
(B)
5
(C)
7
(D)
6

Correct Answer: D

Explanation:

In case of closed organ pipe frequency,

for

Hence possible natural oscillation whose frequencies

Link:

Report Error

Question (19)

QN0038641

The fundamental frequency of a closed organ pipe of length is equal to the second overtone of an organ pipe open at both the ends. The length of organ pipe open at both the ends is

(A)
(B)
(C)
(D)

Correct Answer: B

Explanation:

Link:

Report Error

Question (20)

QN0038642

An organ pipe closed at one end vibrating in its first overtone and another pipe open at both ends vibrating in third overtone are in resonance with a given tuning fork. The ratio of the length of to that of is

(A)
(B)
(C)
(D)

Correct Answer: B

Explanation:

or .

Link:

Report Error

Question (11)

Frequencies of sound produced from an organ pipe open at both ends are

Explanation:

Link:

Question (12)

The fifth harmonic for vibrations of a stretched string is shown in figure. How many nodes are present here?

Explanation:

Link:

Question (13)

A closed organ pipe (closed at one end) is excited to support the third overtone. It is found that air in the pipe has

Explanation:

Link:

Question (14)

A string long and fixed at its ends is driven by a 240 vibrator. The string vibrates in its third harmonic mode. The speed of the wave and its fundamental frequency is:

Explanation:

Link:

Question (15)

If and are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency of the string is given by

Explanation:

Link:

Question (16)

Tube has both ends open while tube has one end closed, otherwise they are identical. The ratio of fundamental frequency of tube and is

Explanation:

Link:

Question (17)

If the length of a stretched string is shortened by and the tension increased by then the ratio of the final and initial fundamental frequencies is

Explanation:

Link:

Question (18)

The number of possible natural oscillation of air column in a pipe closed at one end of length whose frequencies lie below are : (velocity of sound )

Explanation:

Link:

Question (19)

The fundamental frequency of a closed organ pipe of length is equal to the second overtone of an organ pipe open at both the ends. The length of organ pipe open at both the ends is

Explanation:

Link:

Question (20)

An organ pipe closed at one end vibrating in its first overtone and another pipe open at both ends vibrating in third overtone are in resonance with a given tuning fork. The ratio of the length of to that of is

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY