12 class Physics paper 2019-23 of all Punjab Boards with answer keys. Physics 2nd year past paper 2019 MCQs, Short and Long Questions.12th Class Physics Paper 2019-23 for All Punjab Boards with Keys Here you can find the 12th Class Physics Paper 2019-23 for all of Punjab. Our team of experts has solved the paper, and the answer is given in pdf format.
You can easily download the solution by clicking on the link below. The paper is based on the most up-to-date syllabi and exam patterns for all of Punjab’s boards, and it covers all of the important 12th-grade physics topics. The paper is split into two sections: Theory and Practice. The theory part covers all of the important 12th-grade physics topics, such as mechanics, waves, thermodynamics, electrostatics, magnetism, optics, etc., while the practical part covers all of the important 12th-grade physics experiments.
The paper is very important for students taking their 12th-grade exams because it will help them get good grades. 12th Class Physics Paper 2019 for All Punjab Boards with Keys Here you can find the 12th Class Physics Paper 2019 for all of Punjab. Our team of experts has solved the paper, and the answer is given in pdf format. You can easily download the solution by clicking on the link below. The paper is based on the most up-to-date syllabus and pattern for all of Punjab’s boards, and it covers everything.
12 class Physics Paper 2019:
2nd-year Physics past papers 2019 preview.
Physics 2nd Year Paper 2019:
Here is a list of Past papers 2019 Boards given below.
- Lahore Board (Second Group)
- Gujranwala Board (First Group)
- Gujranwala Board (Second Group)
- Faisalabad Board (First Group)
- Faisalabad Board (Second Group)
- Multan Board (First Group)
- Multan Board (Second Group)
- Sahiwal Board
- Sargodha Board (First Group)
- Sargodha Board (Second Group)
- Rawalpindi Board
- Dera Ghazi Khan Board
- Bahawalpur Board (First Group)
- Bahawalpur Board (Second Group) AJK Board
Physics 2nd Year Lahore Board Paper 2019:
The metastable state is than normal excited state.
(A) 10 times larger
(B) 10-8 times smaller
(C) 10 times smaller
(D) 10- times larger
When the current flowing through an inductor is doubled, then the energy stored in it
becomes:
(A) half
(B) four times
(C) one fourth
(D) double
When A.C passes through an inductor, voltage leads the current by an angle:
(A) 09
(B) 45°
(C) 90°
(D) 180°
An electron in H-atom is excited from ground state to n = 4, how many spectral lines
are possible in this case?
(A) 3
(B) 4
(C) 5
(D) 6
In a capacitive circuit of A.C quantity, when q = 0, the slope of the q-t curve is:
(A) minimum
(B) maximum
(C) zero
(D) negative
The potential barrier for silicon at room-temperature is:
(A) 0.7 volt
(B) 0.5 volt
(C) 0.3 volt
(D) 0.9 volt
Kirchhoff’s second rule is based on:
(A) law of conservation of energy
(B) law of conservation of mass
(C) law of conservation of charge
(D) law of conservation of momentum
Past Papers of Physics 2nd Year:
Q2 Write short answers to any EIGHT (8) questions:
(i) Write any two properties of electric field lines.
Differentiate between electric potential and electric potential difference.
(iii) Describe the force or forces on a positive point charge when placed between parallel plates
(iv) with similar and equal charges.
A particle having a charge of 20 electrons on it falls through a potential difference of 100 V.
Calculate the energy acquired by it in electron volts (EV).
What is the function of the grid in the case of a cathode ray oscilloscope?
(vi) How can you prefer a potentiometer over a voltmeter?
(vii) Why does the picture on a TV screen become distorted when a magnet is brought near the
screen?
(viii) A plane conducting loop is located in a uniform magnetic field that is directed along the
x-axis. For what orientation of the loop is the flux a maximum? For What orientation is the
flux a minimum?
Class 12 Physics Past Paper 2019:
A metal rod of length 25cm is moving at a speed of 0.5ms) in a direction perpendicular to a 0.25 T magnetic field. Find the emf produced in the rod. State Lenz’s Law and write its formula.
(xi) How would you position a flat loop of wire in changing magnetic field so that there is no emf induced in the loop?
(xii) Four unmarked wires emerge from a transformer. What steps would you take to determine the turns ratio?
03. Write short answers to any EIGHT (8) questions:
(i) Do bends in a wire affect its electrical resistance? Explain.
Define Wheatstone bridge. Draw its circuit diagram.
(iii) Distinguish between emf and terminal potential.
(iv) Write the advantages and disadvantages of FM over AM.
A sinusoidal current has an RMS value of 10 A. What is the maximum or peak value?
(vii) Distinguish between elastic deformation and plastic deformation.
(viii) Define stress and strain. What are their units?
(ix) What is meant by strain energy? Write its formula. (x) How does the motion of an electron in an n-type substance differ from the motion of holes
Here you may also like to download the 2nd-year Physics postmortem series full book in pdf. Get the file below the link.