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

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 -2

Section - A (1 Marks) 1. ⭐A charge Q is placed at the centre of a cube. The electric flux through one of its face is (A) Q/ε₀(B) Q/6ε₀(C) Q/8ε₀(D) Q/3ε₀2. Two long parallel wires kept 2 m apart carry 3A current each, in the same direction. The force per…

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

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 parallel…

## CBSE Physic Class XII Term 1 Question Paper 2021

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…

## Physics works, and I am still alive

⚛Hope you enjoyed this Video⚛ He is Physics Professor Walter Lewin. Walter Hendrik Gustav Lewin is a Dutch astrophysicist and former professor of physics at the Massachusetts Institute of Technology.He has given his 43+ years to MIT.You could have his video lectures at YouTube as well as EDX. He has…

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

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

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

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…

## Units & Dimensions

Error in Measurement - The error in a measurement is equal to the difference between the true value and the measured value of the quantity. Error = True value - Measured Value Elimination of Error The error may be positive or negative so random errors can be minimised by repeating…

## Physics | 12 | 2

Unit — Electrostatics Chapter — 2| Electrostatic Potential and Capacitance Electric Potential Electric Potential at any point in an electric field is defined as the amount of work done in moving a unit positive charge from infinity to that point against the electrostatic forces. Electric Potential (VP) = W/q₀Note :…