NEET (NTANational Eligibility cum Medical Entrance Test) Physics: Questions 1035  1037 of 2142
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Question number: 1035
» Ray Optics » Deviation and Dispersion of Light by a Prism
Question
A thin prism of angle A = 6° produces a deviation δ = 3°. Find the refractive index of the material of prism.
Choices
Choice (4)  Response  

a.  0.5 

b.  1.0 

c.  1.5 

d.  2.5 

Question number: 1036
» Electromagnetic Induction & Alternating Currents » LCR Series Circuit
Question
An alternating emf of frequency is applied to a series LCR circuit. For this frequency of the applied emf is,
Choices
Choice (4)  Response  

a.  The circuit is at resonance and its impedance is made up only of a reactive part. 

b.  The current in the circuit is not in phase with the applied e. m. f. and the voltage across R equals this applied emf 

c.  The sum of the potential differences across the inductance and capacitance equals the applied e. m. f. which is 180° ahead of phase of the current in the circuit 

d.  The quality factor of the circuit is or and this is a measure of the voltage magnification (produced by the circuit at resonance) as well as the sharpness of resonance of the circuit. 

Question number: 1037
» Ray Optics » Power of a Lens
Question
The power of a Planoconvex lens is P. If this lens is cut longitudinally along its principal axis into two equal parts and then they are joined as given in the figure. The power of combination will be
Choices
Choice (4)  Response  

a.  P 

b.  2P 

c. 


d.  Zero 
