Lesson: Chapter - 17

Practice Questions
1. Which of the following exhibit simple harmonic motion?

  I. A pendulum
 II. A mass attached to a spring
III. A ball bouncing up and down, in the absence of friction

(A) I only

(B) II only

(C) III only

(D) I and II only

(E) I, II, and III


2. If a wave has frequency ƒ = 1014  Hz and speed v = 100 m/s, what is its wavelength?
(A) 10-16 m
(B) 10-12 m
(C) 1010 m
(D) 1012 m
((E) 1016 m
3. Two strings of equal length are stretched out with equal tension. The second string is four times as massive as the first string. If a wave travels down the first string with velocity v, how fast does a wave travel down the second string?
(A) 1/4v
(B) 1/v2 v
(C) v
(D) 2v
(E) 4v


4. A piano tuner has a tuning fork that sounds with a frequency of 250 Hz. The tuner strikes the fork and plays a key that sounds with a frequency of 200 Hz. What is the frequency of the beats that the piano tuner hears?

(A) 0 Hz

(B) 0.8 Hz

(C) 1.25 Hz

(D) 50 Hz

(E) 450 Hz


5. How is the lowest resonant frequency, ƒc, for a tube with one closed end related to the lowest resonant frequency, ƒ0, for a tube with no closed ends?

(A)  ƒc = 1/4 ƒ0

(B) ƒc = 1/2 ƒ0

(C) ƒc =  ƒ0

(D) ƒc = 2 ƒ0

(E)  ƒc = 4 ƒ0

6. Two pulses travel along a string toward each other, as depicted above. Which of the following diagrams represents the pulses on the string at a later time?

(A)

(B)

(C)

(D)

(E)


7. What should a piano tuner do to correct the sound of a string that is flat, that is, it plays at a lower pitch than it should?

(A) Tighten the string to make the fundamental frequency higher

(B) Tighten the string to make the fundamental frequency lower

(C) Loosen the string to make the fundamental frequency higher

(D) Loosen the string to make the fundamental frequency lower

(E) Find a harmonic closer to the desired pitch

Questions 8 and 9 refer to a police car with its siren on, traveling at a velocity vs toward a person standing on a street corner. As the car approaches, the person hears the sound at a frequency of ƒd. Take the speed of sound to be v.


8. What is the frequency produced by the siren?

(A)

(B)

(C)

(D)

(E)


9. What is the wavelength of the sound produced by the siren?

(A)

(B)

(C)

(D)

(E)


10. An ambulance driving with velocity vs/8 where vs is the speed of sound, emits a siren with a frequency of ƒ. What is the frequency heard by a stationary observer toward whom the ambulance is driving?

(A) ƒ/8

(B) 7ƒ/8

(C) ƒ

(D) 8ƒ/7

(E) 8ƒ
Back Next

Next to display next topic in the chapter.

Practice Questions

Video Lessons and 10 Fully Explained Grand Tests

Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.

SAT Reasoning GRE General GMAT Test
More for You
MCQ with question Explanations Scholarships and Financial Aid

GMAT Preparation

GAMT preparation paper-base and online

SAT Reasoning Preparation

How to prepare for SAT Reasoning paper-base and online

Biology for Test Preparation

Prepare Biology for tests with lessons and practice mcq

All in this Category

You may be interested in

Colleges in cities of Balochistan

Comprehensive lists of colleges in ...

Queen Mary College - Lahore

A famous name incolleges in Lahore ...

PPSC Exam for Posts of ASI

A very attractive job - PPSC Exam f ...

Precis Writing

How to write Precis with solved exa ...

ISSB Intelligence Tests

Want to join Pakistan Armed Forces ...

GRE Chemistry

Complete review of GRE Chemistry wi ...

NTU: National Textile University Engineering

National Textile University BSc Eng ...

SZABIST - Engineering

SZABIST - Mechatronics Engineering ...

About us

EntryTest.com is a test preparation service for students seeking successful career.

About Disclaimer

Quick Test Prep

NUST NET IBA Karachi SAT LUMS LCAT LSE

 

NTS GAT NTS NAT GMAT GRE ACT

Study Abroad

Education Abroad Business Schools MS in USA