Important Questions for Class 12 HSC Physics Chapter Wise. We covered all the Important Questions for Class 12 HSC Physics Chapter Wise in this post for free so that you can practice well for the exam.
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Important MCQs for Class 12 HSC Physics Chapter Wise for Students
The energy density of the medium is :
(A) directly proportional to the dielectric constant
(B) directly proportional to the square of the dielectric constant
(C) inversely proportional to the square of the dielectric constant
(D) inversely proportional to the dielectric constant
Option d – inversely proportional to the dielectric constant
Which of the following are polar dielectrics?
(A) H₂
(B) N₂
(C) CO₂
(D) HCI
Option d – HCl
The energy per unit volume of a medium is :
(A) Directly proportional to the square of the intensity
(B) Directly proportional to the square of surface charge density
(C) Directly proportional to the charge
(D) Both (A) and (B)
Option d – Both (A) and (B)
A molecule in which the center of gravity of positive nuclei and revolving electrons do not coincide is called :
(A) dielectric
(B) polar dielectric
(C) nonpolar dielectric
(D) can not be predicted
Option b – polar dielectric
Which of the following are nonpolar dielectrics?
(A) CH3
(B) CH4
(C) OH
(D) HCI
Option b – CH4
A dielectric is essentially an :
(A) insulator
(B) conductor
(C) semiconductor
(D) resistor
Option a – insulator
A molecule in which the center of gravity of positive nuclei and revolving electrons coincide is called :
(A) dielectric
(B) polar dielectric
(C) nonpolar dielectric
(D) can not be predicted
Option c – nonpolar dielectric
The dipole moment per unit volume is called :
(A) polarisation density
(B) dielectric constant
(C) polar dielectrics
(D) nonpolar dielectrics
Option a – polarisation density
The electric charge produces an intensity of 300 V/m at a point in the air. If air is replaced by another medium of dielectric constant 3. The intensity at the same point due to the same charge will be :
(A) 300 V/m
(B) 100 V/m
(C) 900 V/m
(D) 50 V/m
Option b – 100 V/m
A metal sphere of radius 5 cm is charged to 100V. Electric intensity at a point on its surface is :
(A) 1000 V/m
(B) 5000 V/m
(C) 2500 V/m
(D) 2000 V/m
Option d – 2000 V/m
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