NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 1023  1027 of 2320
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Question number: 1023
» Electromagnetic Waves » Electromagnetic Waves & Characteristics
Question
Assertion (Ꭺ)
The electromagnetic waves of shorter wavelength can travel longer distances on earth’s surface than those of longer wavelengths.
Reason (Ꭱ)
Shorter the wavelength, the larger is the velocity of wave propagation.
Choices
Choice (4)  Response  

a.  Both Ꭺ and Ꭱ are false  
b.  Ꭺ is true but Ꭱ is false  
c.  Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ  
d.  Ꭺ is false but Ꭱ is true 
Question number: 1024
» Ray Optics » Lens Maker's Formula and Lens Formula
Question
What is the refractive index of material of a Planoconvex lens, if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 1025
Question
The relation between the linear magnification m, the object distance u and the focal length f for a spherical mirror is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 1026
» Electromagnetic Induction & Alternating Currents » Resonance
Question
This circuit will resonate at ω equal to,
Choices
Choice (4)  Response  

a.  200 rad s ^{1}  
b.  500 rad s ^{1}  
c.  50 rad s ^{1}  
d.  2000 rad s ^{1} 
Question number: 1027
» Electromagnetic Induction & Alternating Currents » Quality Factor
Question
In an LCR circuit, the sharpness of resonance depends on
Choices
Choice (4)  Response  

a.  Resistance R  
b.  Capacitance C  
c.  Inductance L  
d.  All a. , b. and c. are correct 