1. Home
  2. |  
  3. CBSE Board |  

CBSE Class 12 Physics Exam 2019: Blueprint, Marking Scheme & Sample Paper

Mar 4, 2019 18:22 IST
    CBSE Class 12 Physics Board Exam 2019
    CBSE Class 12 Physics Board Exam 2019

    Are you preparing for CBSE Class 12 Physics Board Exam 2019? If yes, then check the latest CBSE 12th Physics Blueprint 2019 along with Marking Scheme & Sample Paper for the preparation of Physics Exam 2019. The CBSE (Central Board of Secondary Education) has recently released these papers. These papers are among some of the most important resources for the preparation of CBSE Class 12 Physics Board Exam 2019.

    Some Content from the Sample Paper & Its Marking Scheme:

    Question1. State the SI unit of the electric polarization vector P. [1]

    Answer:

    C/m2. [1]

    For CBSE Class 12 Physics Syllabus & Blueprint, Please refer this link

    CBSE Toppers' Answer Sheet 2018: Check CBSE Model Answer Sheet

    Question2. Define temperature coefficient of resistivity

    Answer:

    Fractional change in resistivity per unit change in temperature. [1]

    Question3. Name the electromagnetic waves that are widely used as a diagnostic tool in medicine. [1]

    OR

    Name the current which can flow even in the absence of electric charge.

    Answer:

    X-rays. [1]

    OR

    Displacement current. [1]

    Question4. A ray of light is incident on a medium with angle of incidence ‘i’ and is refracted into a second medium with angle of refraction ‘r’. The graph of sin i versus sin r is as shown. Find the ratio of the velocity of light in the first medium to the velocity of light in the second medium

    Answer:

    From the graph tan ϴ = (sin r)/(sin i)

    ⇒ (sin i)/(sin r) = v1/v2

    ⇒ v1/v2 = cot.

    Question5. Two particles have equal momenta. What is the ratio of their de-Broglie wavelengths? 1

    OR

    Monochromatic light of frequency 6.0x 1014 Hz is produced by a laser. What is the energy of a photon in the light beam?

    Answer:

    P1 = P2 [1/2]

    Ratio, λ12 = 1: 1 [1/2]

    OR

    Each photon has an energy, E= h.ν [1/2]

    = (6.63 ×10-34 J s) (6.0 × 1014 Hz) = 3.98 × 10–19 J [1/2]

    .

    .

    .

    For complete information, download papers from the links given below

    CBSE Marking Scheme for Class 12 Physics Board Exam 2019

    CBSE Sample Paper for Class 12 Physics Board Exam 2019

    Register to get FREE updates

      All Fields Mandatory
    • (Ex:9123456789)
    • Please Select Your Interest
    • Please specify

    • ajax-loader
    • A verifcation code has been sent to
      your mobile number

      Please enter the verification code below