Sail E0 Webinar

General Knowledge > General Science

WAVES AND MOTIONS MCQs

Laws Of Motion, Second Law Motion, Uniform Circular Motion, First Law Of Motion, Third Law Motion, Horizontal Projectile Motion, Oscillations And Waves, Radio Wave Propagation, Wave Optics

Total Questions : 131 | Page 2 of 14 pages
Question 11. The aim of the above formula is to find?
  1.    displacement
  2.    velocity
  3.    acceleration
  4.    angular frequency
 Discuss Question
Answer: Option D. -> angular frequency
Question 12. The wave can propagate without any medium
  1.    Light
  2.    Electromagnetic wave
  3.    Infrared
  4.    Sound wave
 Discuss Question
Answer: Option D. -> Sound wave
Question 13. A pendulum is observed to complete 30 full cycles in 120 seconds
  1.    90 seconds
  2.    6 seconds
  3.    4 seconds
  4.    0.25 second
 Discuss Question
Answer: Option C. -> 4 seconds
Question 14. What is κ and I stand for in the above formula?
  1.    I is the rotational inertia of the object about the axis of rotation
  2.    κ is the torsion constant of the wire
  3.    I is the rotational outer of the object about the axis of rotation
  4.    Both A & B
 Discuss Question
Answer: Option D. -> Both A & B
Question 15. If no friction is present, the mechanical energy remains constant even though what variable changes?
  1.    K
  2.    U
  3.    E
  4.    Both A & B
 Discuss Question
Answer: Option D. -> Both A & B
Question 16. A particle in simple harmonic motion has, at any time, kinetic energy and potential energy of what formula?
  1.    K=12mv2K=\frac{1}{2}mv^2K=21​mv2
  2.    U=12kx2U=\frac{1}{2}kx^2U=21​kx2
  3.    U=12kxU=\frac{1}{2}kx^{ }U=21​kx
  4.    Both A & B
 Discuss Question
Answer: Option D. -> Both A & B
Question 17. For the force acting on the block, the formula can now relate the spring constant k (a measure of the stiffness of the spring) to the mass of the block and the resulting angular frequency of what formula?
  1.     k=mω2k=mω^2k=mω2  
  2.     k=mvk=\frac{m}{v}k=vm​  
  3.     k=ωmk=\frac{ω}{m}k=mω​  
  4.     m=kωm=kωm=kω  
 Discuss Question
Answer: Option A. ->  k=mω2k=mω^2k=mω2  
Question 18. Base on the formula above what is  ω and ϕω\ and\ ϕω and ϕ  stand for?
  1.    ω is the angular frequency
  2.    ϕ is the phase constant
  3.    ω is the angular velocity
  4.    Both A & B
 Discuss Question
Answer: Option D. -> Both A & B
Question 19. Explain the statement of An oscillator produces an oscillatory disturbance that moves through the surrounding medium
  1.    If the oscillator is a mechanical oscillator and if it is placed in liquid like water, it produces waves that travel in a liquid medium
  2.    If the oscillator is an electronic circuit, then electromagnetic waves are produced and transmitted to surrounding air/vacuum through inductance coils or antenna
  3.    If the oscillator is an electronic circuit, then electromagnetic waves fail to develop
  4.    Both A & B
 Discuss Question
Answer: Option D. -> Both A & B
Question 20. The aim of the above formula is to find?
  1.    distance
  2.    period
  3.    acceleration
  4.    angular frequency
 Discuss Question
Answer: Option B. -> period

Latest Videos

Latest Test Papers