UP Board Solution Class 12 Physics. We covered all the UP Board Solution Class 12 Physics in this post for free so that you can practice well for the exam.
Install our MCQTUBE Android app from the Google Play Store and prepare for any competitive government exams for free.
These types of competitive MCQs appear in the exams like MHT-CET, NEET, JEE (Mains), and other Competitive Examinations, etc. We created all the competitive exam MCQs into several small posts on our website for your convenience.
You will get their respective links in the related posts section provided below.
Related Posts:
- Important Question Physics Class 12 UP Board
- Class 12 Physics Book UP Board
- Half Yearly Question Paper Class 12 Physics
UP Board Solution Class 12 Physics MCQs for Students
The distance between the plates of a parallel plate air condenser is 2 mm and P.D. is 200 V. The energy density in the space between the plates is :
(A) 4.425 J/m³
(B) 0.04425 J/m³
(C) 8.85 J/m³
(D) 0.885 J/m³
Option b – 0.04425 J/m³
A condenser is charged through a potential difference of 200 V and possesses a charge of 0.1 coulombs. When discharged it would release the energy of
(A) 1 J
(B) 5 J
(C) 10 J
(D) 20 J
Option c – 10 J
A 4 μF capacitor is charged to 400 V. If its plates are joined through a resistance of 2 KQ, then heat produced in the resistance is :
(A) 0.64 J
(B) 1.28 J
(C) 0.32 J
(D) 0.16 J
Option c – 0.32 J
In a charged condenser, the energy resides in
(A) the positively charged plate
(B) the negatively charged plate
(C) the field between the plates
(D) both (A) and (B)
Option c – the field between the plates
A capacitor C has charge Q and the stored energy is W. If the charge is increased to 2 Q. The stored energy will be :
(A) W
(B) 2 W
(C) 4 W
(D) 3 W
Option c – 4 W
The work done in taking a unit positive charge once around a charge +q (stationary) along a circle of radius r is :
(A) positive
(B) negative
(C) zero
(D) infinite
Option c – zero
A parallel plate condenser has a capacitance of 50 μF in air and 110 uF when immersed in oil. The dielectric constant k of the oil is :
(A) 11
(B) 5
(C) 2.2
(D) 2.5
Option c – 2.2
A parallel plate capacitor has a capacity of C. If the separation between the plates is doubled and the dielectric medium is inserted between the plates, the capacity becomes 3 C. The dielectric the new constant of the medium is :
(A) 3
(B) 6
(C) 1.5
(D) 2
Option b – 6
In a parallel plate condenser, the radius of each circular plate is 12 cm and the distance between the plates is 5 mm. There is a glass slab of 3 mm thick and a dielectric constant of 6. The capacity of the condenser will be :
(A) 140 pF
(B) 56 pF
(C) 160 pF
(D) 1.6 pF
Option c – 160 pF
A parallel plate condenser is immersed in an oil of dielectric constant 3. The field between the plate is
(A) increases and proportional to 3
(B) increases and proportional to 1/3
(C) decreases and is proportional to 1/3
(D) decreases and is proportional to 1/4
Option c – decreases and is proportional to 1/3
A dielectric is introduced between the elements of the condenser kept at the constant potential difference. Then the charge on the condenser :
(A) increases
(B) decreases
(C) remains the same
(D) first increases and then decreases
Option a – increases
We covered all the up board solution class 12 physics above in this post for free so that you can practice well for the exam.
Check out the latest MCQ content by visiting our mcqtube website homepage.
Also, check out:
