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Question (31)

QN006092

If frequency increases in a wave graph while speed remains constant, wavelength

(A) increases
(B) decreases
(C) remains same
(D) becomes zero

Correct Answer: B

Explanation:

Frequency and wavelength are inversely proportional.

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Question (32)

QN006093

A sound wave graph shows wavelength 1.5 m and frequency 240 Hz. Speed is

(A) 120 m/s
(B) 240 m/s
(C) 360 m/s
(D) 480 m/s

Correct Answer: C

Explanation:

v = fλ = 240 × 1.5 = 360 m/s

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Question (33)

QN006094

In graphical representation, the horizontal axis usually represents

(A) amplitude
(B) displacement or time
(C) loudness
(D) intensity

Correct Answer: B

Explanation:

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Question (34)

QN006095

A wave graph has time period 0.005 s. Frequency is

(A) 50 Hz
(B) 100 Hz
(C) 200 Hz
(D) 500 Hz

Correct Answer: C

Explanation:

f = 1/T = 1/0.005 = 200 Hz

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Question (35)

QN006096

Two consecutive crests in a graph are separated by 8 m. The wavelength is

(A) 2 m
(B) 4 m
(C) 8 m
(D) 16 m

Correct Answer: C

Explanation:

Distance between consecutive crests equals wavelength.

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Question (36)

QN006097

A sound wave graph showing greater amplitude but same frequency represents sound that is

(A) shriller only
(B) louder only
(C) slower only
(D) lower in pitch only

Correct Answer: B

Explanation:

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Question (37)

QN006098

A wave graph with smaller wavelength generally has

(A) lower frequency
(B) higher frequency
(C) lower amplitude
(D) lower intensity

Correct Answer: B

Explanation:

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Question (38)

QN006099

A sound wave has speed 330 m/s and frequency 110 Hz. From the graph, wavelength will be

(A) 1 m
(B) 2 m
(C) 3 m
(D) 4 m

Correct Answer: C

Explanation:

λ = v/f = 330/110 = 3 m

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Question (39)

QN006100

The graphical representation of a sound wave helps determine

(A) only colour of source
(B) wave characteristics like amplitude and wavelength
(C) chemical composition of air
(D) magnetic properties of sound

Correct Answer: B

Explanation:

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Question (40)

QN006101

Which statement is correct for graphical representation of sound waves?

(A) Greater amplitude means lower loudness
(B) Greater frequency means lower pitch
(C) Shorter wavelength means higher frequency
(D) Frequency and wavelength are directly proportional

Correct Answer: C

Explanation:

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Question (31)

If frequency increases in a wave graph while speed remains constant, wavelength

Explanation:

Link:

Question (32)

A sound wave graph shows wavelength 1.5 m and frequency 240 Hz. Speed is

Explanation:

Link:

Question (33)

In graphical representation, the horizontal axis usually represents

Explanation:

Link:

Question (34)

A wave graph has time period 0.005 s. Frequency is

Explanation:

Link:

Question (35)

Two consecutive crests in a graph are separated by 8 m. The wavelength is

Explanation:

Link:

Question (36)

A sound wave graph showing greater amplitude but same frequency represents sound that is

Explanation:

Link:

Question (37)

A wave graph with smaller wavelength generally has

Explanation:

Link:

Question (38)

A sound wave has speed 330 m/s and frequency 110 Hz. From the graph, wavelength will be

Explanation:

Link:

Question (39)

The graphical representation of a sound wave helps determine

Explanation:

Link:

Question (40)

Which statement is correct for graphical representation of sound waves?

Explanation:

Link:

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