Unit 1 Conceptual Multiple Choice Questions
Unit 1 Conceptual Multiple Choice Answers
Unit 1.1 Multiple Choice Questions - Waves
Unit 1.1 Multiple Choice Answers - Waves
Unit 1.3 Multiple Choice Questions - Sound
Unit 1.3 Multiple Choice Answers - Sound
Unit 1.5 Multiple Choice Questions - Doppler Effect
Unit 1.5 Multiple Choice Answers - Doppler Effect
Unit 2 - Multiple Choice - Electromagnetic Waves Questions
Unit 2 - Multiple Choice - Electromagnetic Waves Answers
Unit 2.1 Multiple Choice Extended Questions - Waves
Unit 2.1 Multiple Choice Extended Answers-Waves
Unit 3 Multiple Choice Questions
Unit 3 Multiple Choice Answers
 

Unit 1 Conceptual Multiple Choice Questions and Answers

mcm11.  A pendulum in SHM has amplitude A and period T. At what point in the motion is the velocity zero and the acceleration zero simultaneously
A. x = A
B. X = 0
C. x = -A
D. Never

Answer D... they have a phase difference of π/2 radians apart...

2. An object oscillates back and forth on the end of a spring. Which of the following statements is impossible?
A. It can have zero velocity and nonzero acceleration simultaneously
B. It can have zero velocity and zero acceleration simultaneously
C. It can have nonzero velocity and zero acceleration simultaneously
D. It can have nonzero velocity and nonzero acceleration simultaneously.

Answer B... they have a phase difference of π/2 radians apart...

3. A mass M oscillates on the end of a spring. To double the period, change the mass to:
A. 2M
B. M/2
C. 4M.
D. M/4

Answer C...

T = 2π √(m/k)

T1/T2 ∝ √(m1/m2)

2 ∝ √(4m/m)

4. An object of mass m is attached to a horizontal ideal spring with spring constant k and rests on a frictionless surface and . The system oscillates with amplitude A. The oscillation frequency of this system can be increased by
A. increasing k and m
B. decreasing k and m.
C. increasing k and decreasing m
D. decreasing k and increasing

Answer C...

f = (1/) √(k/m)

f1/f2 ∝ √(k1/k2)

f1/f2 ∝ √(m2/m1)

5. A pendulum has a string of length L. To double the period, change the length to:
A. 2L
B. L/2
C. 4L.
D. L/4

Answer C...

T = 2π √(L/g)

T2 ∝ L

Concept by Kishore Lal. Programmed by Kishore Lal... Copyright © 2015 Kishore Lal. All rights reserved.