QP – LETXY

CBSE Physics Class 12th Board Question Paper 2023 | Set -3

March 6, 2023March 3, 2024 by Deepesh

Deepesh

Section - A (1 Marks) 1. An electric dipole of length 2 cm is placed at an angle of 30° with an electric field 2×105 N/C. If the dipole experiences a torque of 8×10-3 Nm, the magnitude of either charge of the dipole is(A) 4µC(B) 7µC(C) 8mC(D) 2mC2. Two horizontal…

CBSE Physics Class 12th Board Question Paper 2023 | Set -1

March 6, 2023September 22, 2023 by Deepesh

Deepesh

CBSE Physic Class XII Term 1 Question Paper 2021

December 10, 2021September 24, 2022 by Deepesh

Deepesh

Series-SSJ/2Question Paper Code - 055/2/4SET - 4 Delhi Region Section - A Q.1 A negatively charged object X is repelled by another charged object Y. However an object Z is attracted to object Y. Which of the following is the most possibility for the object Z?a) positively charged onlyb) negatively…

CBSE Physics Class 12th Board Question Paper 2020 | SET -3

March 21, 2020December 8, 2020 by Deepesh

Deepesh

SECTION — A(1 Mark Questions) 1. A biconcave lens of power P vertically splits into two identical plano concave parts. The power of each part will be a) 2Pb) P/2c) P d) P/√2 2. The power factor of a series LCR circuit at resonance will bea) 1b) 0c) 1/2d) 1/√2…

CBSE Physics Class 12th Board Question Paper 2020 | SET -2

March 2, 2020December 8, 2020 by Deepesh

Deepesh

SECTION — A(1 Mark Questions) 1. The wavelength and intensity of light emitted by a LED depend upon a) forward bias and energy gap of the semiconductorb) energy gap of the semiconductor and reverse biasc) energy gap onlyd) forward bias only 2. The graph showing the correct variation of linear…

CBSE Physics Class 12th Board Question Paper 2020 | Set -1

March 2, 2020December 8, 2020 by Deepesh

Deepesh

SECTION — A(1 Mark Questions) 1. The relationship between Brewster angle 'θ'and the speed of light 'v' in the denser medium is —a) v tan θ = cb) c tan θ = vc) v sin θ = cd) c sin θ = v ⭐ 2. Photo diodes are used to…

CBSE Physics Class 12th Board Question Paper 2019 | SET -3

March 5, 2019May 6, 2021 by Deepesh

Deepesh

SECTION — A 1. Distinguished between unpolarized and linearly polarised light. (1) 2. Define the term "threshold frequency", in the context of photoelectric emission. (1)ORDefine the term "intensity" in the photon picture of electromagnetic radiation. 3. How is the drift velocity in a conductor affected with the rise in temperature?…

CBSE Physics Class 12th Board Question Paper 2019 | SET -2

March 5, 2019May 6, 2021 by Deepesh

Deepesh

SECTION — A 1. Define the term "threshold frequency", in context of photoelectric emission. (1)ORDefine the term "intensity" in photon picture of electromagnetic radiation. 2. When unpolarised light is incident on the interface separating the rarer medium and the denser medium, Brewster angle is found to be 60 °. Determine…

CBSE Physics Class 12th Board Question Paper 2019 | SET -1

March 5, 2019May 6, 2021 by Deepesh

Deepesh

SECTION — A 1. Draw the pattern of electric field lines, when a point charge - Q is kept near an uncharged conducting plate. (1) ⭐ 2. How does the mobility of electrons in a conductor change, if the potential difference applied across the conductor is doubled, keeping the length…

Set 3 | CBSE Physics Class 12th Board Question Paper 2018

March 7, 2018May 8, 2021 by Deepesh

Deepesh

SET -3 Section A Q.1) Which mode of propagation is used by short wave broadcast services? (1) Q.2) Four nuclei of an element undergo fusion to form a heavier nucleus, with release of energy. Which of the two — the parent or the daughter nucleus — would have higher binding energy per nucleon?…

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