CBSE Marking Scheme for Class 12 Physics Board Exam 2020 is available here. With this article, students can download CBSE 12th Physics Marking Scheme 2020 from the download link at the end of this article. This Marking Scheme contains answer (or hints) with specific concepts & key points. Step-wise marking for all questions is depicted in this Marking Scheme.
Content from CBSE Marking Scheme 2020 & Sample Paper:
Q1. A charge q is placed at the point of intersection of body diagonals of a cube. The
electric flux passing through any one of its face is
a. q/(6εo)
b. 3q/εo
c. 6q/εo
d. q/3εo
A1. (a)
Also check: CBSE Exam Date Sheet 2020: Time Table for 10th & 12th Board Exams
Also check: CBSE Class 12 Sample Papers & Marking Scheme: 2020
Q2. The electric potential of earth is taken to be zero because earth is a good
a. Insulator
b. conductor
c. semiconductor
d. dielectric
A2. (b)
NCERT Exemplar Solutions for CBSE Class 12 Physics
Q3. If the ammeter in the given circuit shown in the diagram reads 2A, the resistance R is
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a. 1Ω
b. 2Ω
c. 3Ω
d. 4Ω
A3. (a)
NCERT Solutions for CBSE Class 12 Physics
Q4. The heat produced by 100W heater in 2 minutes is equal to
a. 10.5kJ
b. 16.3kJ
c. 12.0kJ
d. 14.2kJ
A4. (c)
Q5. Time period of a charged particle undergoing a circular motion in a uniform magnetic field is independent of
a. speed of the particle
b. mass of the particle
c. charge of the particle
d. magnetic field
A5. (a)
Q6. The final image formed in an astronomical refracting telescope with respect to the object is
a. Real inverted
b. Real erect
c. Virtual erect
d. Virtual inverted
A6. (d)
Q7. The shape of the interference fringes in Young’s double slit experiment when D (distance between slit and screen) is very large as compared to fringe width is nearly
a. straight line
b. parabolic
c. circular
d. hyperbolic
A7. (a)
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