NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 1728  1732 of 2320
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Question number: 1728
» Oscillations and Waves » Speed of a Wave
Question
V _{1} and V _{2} are the velocities of sound at the same temperature in two monoatomic gases of densities ρ _{1} and ρ _{2} respectively. If then the ratio of velocities V _{1} and V _{2} will be,
Choices
Choice (4)  Response  

a.  4: 1  
b.  1: 2  
c.  2: 1  
d.  1: 4 
Question number: 1729
» Oscillations and Waves » Longitudinal and Transverse Waves
Question
In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.170 second. The frequency of the wave is,
Choices
Choice (4)  Response  

a.  0.73 Hz  
b.  0.36 Hz  
c.  2.94 Hz  
d.  1.47Hz 
Question number: 1730
» Oscillations and Waves » Simple Pendulum
Question
The length of a simple pendulum is increased by 5%. Its time period will
Choices
Choice (4)  Response  

a.  Increase by 2.5%  
b.  Increase by 2%  
c.  Increase by 3.5%  
d.  Decrease by 5% 
Question number: 1731
» Oscillations and Waves » Wave Motion
Question
A wave travelling in positive Xdirection with A = 0.2m has a velocity of 360 m/sec. If λ = 60m, then correct expression for the wave is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 1732
» Oscillations and Waves » Speed of a Wave
Question
A wave represented by the given equation where x is in meter and t is in second. The expression represents,
(1) A wave travelling in the negative X direction with a velocity of 1.5 m/sec
(2) A wave travelling in the negative X direction with a wavelength of 0.2 m
(3) A wave travelling in the positive X direction with a velocity of 1.5 m/sec.
(4) A wave travelling in the positive X direction with a wavelength of 0.2 m
Select the correct answers and mark it according to the following codes:
Choices
Choice (4)  Response  

a.  1 and 3 are correct  
b.  1,2 and 3 are correct  
c.  1 and 2 are correct  
d.  2 and 4 are correct 