NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 1120  1125 of 2142
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Question number: 1120
» Ray Optics » Power of a Lens
Question
If the focal length of a magnifier is 5 cm find the magnifying power of the lens for relaxed and strained eye.
Choices
Choice (4)  Response  

a.  2×, 3× 

b.  4×, 5× 

c.  l×, 2× 

d.  4×, 2× 

Question number: 1121
» Ray Optics » Lens Maker's Formula and Lens Formula
Question
A pin is placed 10 cm in front of a convex lens of focal length 20 cm, made of material having refractive index 1.5. The surface of the lens farther away from the pin is silvered and has a radius of curvature 22 cm. determine the position of the final image.
Choices
Choice (4)  Response  

a.  31 cm in front 

b.  11 cm in front 

c.  15 cm in front 

d.  21 cm in front 

Question number: 1122
» Electromagnetic Induction & Alternating Currents » LCR Series Circuit
Question
For a series LCR circuit R = X _{L} = 2X _{C}. The impedance of the circuit and phase difference between V and I respectively will be
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 1123
» Ray Optics » Reflection and Refraction of Light » Spherical Surface
Question
Two plane mirrors are placed at an angle a so that a ray parallel to one mirror gets reflected parallel to the second mirror after two consecutive reflections. The value of a will be
Choices
Choice (4)  Response  

a.  30° 

b.  60° 

c.  75° 

d.  90° 

Question number: 1124
Question
The charging current for a capacitor is 1 A, then the displacement current is
Choices
Choice (4)  Response  

a.  0 

b.  2 A 

c.  1 A 

d.  0.5 A 

Question number: 1125
» Ray Optics » Reflection and Refraction of Light » Spherical Surface
Question
Two plane mirrors are inclined at an angle of 30°. Then the first four images of an object O placed between the two mirrors are correctly represented by
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
