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Recent questions and answers in Physics
Questions
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CBSE XII
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Physics
Physics
Electric charges and fields
Electrostatic Potential and Capacitance
Current Electricity
Moving charges and magnetism
Magnetism and matter
Electromagnetic induction
Alternating current
Electromagnetic waves
Ray optics and optical instruments
Wave optics
Dual nature of radiation and matter
Atoms
Nuclei
Semiconductor electronics
Communication systems
The electric potential inside a conductivity sphere
cbse
class 12
physics
electrostatic-potential-and-capacitance
answered
May 22, 2019
by
ray73608
1
answer
If the distance between two charge is reduced to half then the electrical force between them will become
cbse
class 12
electric charges and fields
answered
Mar 21, 2019
by
meena.clay6
1
answer
If a unit charge is rotated around a charge q in a circular path of radius r, then the work done will be
cbse. class 12
physics
electric charges and fields
answered
Mar 21, 2019
by
meena.clay6
1
answer
State Brewster's law
cbse
class
12
physics
wave-optics
answered
Mar 21, 2019
by
meena.clay6
1
answer
Ohm's law is true
cbse
class
12
physics
current-electricity
answered
Mar 20, 2019
by
meena.clay6
1
answer
If 5 percent of total current passes through a galvanometer of resistance G, then value of sheet resistance s is
cbse
class
12
physics
current-electricity
answered
Mar 20, 2019
by
meena.clay6
1
answer
From Joules law of heating when current I flows through G. resistance R for time t. then Q produced is
cbse
class
12
physics
current-electricity
answered
Mar 20, 2019
by
meena.clay6
1
answer
Kirchhoff's current law for a junction as shown
cbse
class
12
physics
current-electricity
answered
Mar 20, 2019
by
meena.clay6
1
answer
n identical cells each of E and internal resistance r be connected in services The current through load resistance R
cbse
class
12
physics
current-electricity
answered
Mar 20, 2019
by
meena.clay6
1
answer
Torque acting on a electric dipole in a uniform electric fiels $\hat E$
cbse
class 12
physics
electric charges and fields
answered
Mar 20, 2019
by
meena.clay6
1
answer
Coulombs states that Force between charges is
cbse
class 12
physics
electric charges and fields
answered
Mar 20, 2019
by
meena.clay6
1
answer
Expression for electric field at any point on axial line of electric dipole is
cbse
class 12
physics
electric charges and fields
answered
Mar 20, 2019
by
meena.clay6
1
answer
Net flux through closed surface S is
cbse
class 12
physics
electric charges and fields
answered
Mar 20, 2019
by
meena.clay6
1
answer
What is the angle between the reflected and refraction rays at polarized angle .
cbse
class12
physics
ch-10
sec-a
additional
easy
answered
Mar 8, 2019
by
sharmabittu081
1
answer
derive the formula (E1R2-E2R2)/(R1+R2) having the two cells are in opposite directions?
physics
asked
Jun 28, 2018
by
dhananjaybhargava786
0
answers
Explain the origin of spectral lines of hydrogen spectrum on basis of Bohr's theory.
cbse
class 12
physics
atoms
answered
Jan 8, 2018
by
mahawarravi036
2
answers
Obtain the relation for frequency of spectral lines emitted from hydrogen atoms.
cbse
class 12
physics
atoms
answered
Jul 20, 2017
by
pady_1
1
answer
Calculate the energy level of an electron in $n^{th}$ orbit or derive an equation for the energy of
cbse
class 12
physics
atoms
answered
Jul 20, 2017
by
pady_1
1
answer
<div>Explain the phenomenon of diffraction of light at a single slit to show the fringes of diffract
cbse
class 12
physics
dual nature of radiation and matter
asked
Jul 19, 2017
by
pady_1
1
answer
<div>Explain polarisation by reflective. State and Prove Brewster's law.</div>
cbse
class 12
physics
dual nature of radiation and matter
answered
Jul 19, 2017
by
pady_1
1
answer
Derive an expression for intensity at any point on the observation serem in the young’s double sli
cbse
class 12
physics
dual nature of radiation and matter
asked
Jul 19, 2017
by
pady_1
1
answer
State Huygen's principle and also explain their propagation of waves
cbse
class 12
physics
dual nature of radiation and matter
asked
Jul 19, 2017
by
pady_1
1
answer
<div>What is dispersion?What is the angle of deviation?Derive an expression for minimum angle of dev
cbse
class 12
physics
wave optics
answered
Jul 18, 2017
by
pady_1
1
answer
<div>State Raley’s law of scattering.Explain different phenomenon of daily life which are of scatt
cbse
class 12
physics
wave optics
asked
Jul 18, 2017
by
pady_1
1
answer
<div>Derive an expression for the torque acting on a current carrying loop suspended in a uniform ma
cbse
class 12
physics
moving charges and magnetism
asked
Jul 17, 2017
by
pady_1
1
answer
<div>Derive an expression for the force per unit length between two infinitely long straight paralle
cbse
class 12
physics
moving charges and magnetism
asked
Jul 17, 2017
by
pady_1
1
answer
What is cyclotron? Discuss the principle,construction,theory and working of a cyclotron.What is the
cbse
class 12
physics
moving charges and magnetism
answered
Jul 17, 2017
by
pady_1
1
answer
What is Lorentz force? Write an expression for it.
cbse
class 12
physics
moving charges and magnetism
asked
Jul 17, 2017
by
pady_1
1
answer
Apply Ampere's circuital law to find magnetic field inside and outside of a toroidal solenoid.  
cbse
class 12
physics
moving charges and magnetism
answered
Jul 14, 2017
by
pady_1
1
answer
What is the magnetic field at the center of the circular current loop?
cbse
class 12
physics
moving charges and magnetism
asked
Jul 13, 2017
by
pady_1
1
answer
What is the magnetic field due to a long straight current carrying conductor?
cbse
class 12
physics
moving charges and magnetism
answered
Jul 13, 2017
by
pady_1
1
answer
<span id="docs-internal-guid-4fbdba20-2b6a-a917-3674-a545c4ad3ddd"><p dir="ltr" style="line-height:1
cbse
class 12
physics
electromagnetic induction theory question
answered
Jul 10, 2017
by
pady_1
1
answer
<span id="docs-internal-guid-4fbdba20-2b60-4186-44fc-35ae6a849452"><span style="font-size: 10pt; fon
cbse
class 12
physics
electromagnetic induction theory question
answered
Jul 10, 2017
by
pady_1
1
answer
<span id="docs-internal-guid-4fbdba20-2b52-e5e5-abd4-212fc02ca976"><span style="font-size: 10pt; fon
cbse
class 12
physics
electromagnetic induction theory question
answered
Jul 10, 2017
by
pady_1
1
answer
<span id="docs-internal-guid-9be86d9a-2b33-57a9-7f69-d7bbe3a08ca9"><p dir="ltr" style="line-height:1
cbse
class 12
physics
electromagnetic induction theory question
asked
Jul 10, 2017
by
pady_1
1
answer
<span id="docs-internal-guid-e8b050f1-3be1-66b5-f709-2a057dd3fcbe"></span>
cbse
class 12
physics
moving charges and magnetism
asked
Jul 5, 2017
by
pady_1
1
answer
<span id="docs-internal-guid-9be86d9a-11ab-3f9a-3c39-c89bbeb5789f"><span style="font-size: 10pt; fon
cbse
class 12
physics
electromagnetic induction theory question
answered
Jul 5, 2017
by
pady_1
1
answer
<span id="docs-internal-guid-9be86d9a-119a-a0fd-038c-c8195a8855c7"><p dir="ltr" style="line-height:1
cbse
class 12
physics
electromagnetic induction theory question
answered
Jul 5, 2017
by
pady_1
1
answer
<span id="docs-internal-guid-bbc25f1a-118b-ef00-5e3a-4e0c48b641e2"><p dir="ltr" style="line-height:1
cbse
class 12
physics
magnetism and matter theory question
answered
Jul 5, 2017
by
pady_1
1
answer
<span id="docs-internal-guid-bbc25f1a-116d-a2fa-ee11-f22f53c9ea52"><p dir="ltr" style="line-height:1
cbse
class 12
physics
magnetism and matter theory question
asked
Jul 5, 2017
by
pady_1
1
answer
<span id="docs-internal-guid-bbc25f1a-112d-4049-43e7-abd6c8b4943a"><span style="font-size: 10pt; fon
cbse
class 12
physics
magnetism and matter theory question
answered
Jul 5, 2017
by
pady_1
1
answer
Deduce the relationship between electric current and drift velocity . hence deduce ohm's law also wri
cbse
class
12
physics
current
electricity
theory
question 
asked
Jun 13, 2017
by
pady_1
1
answer
Deduce the relationship between electric current and drop velocity . hence deduce ohm's law also wri
cbse
class 12
physics
current electricity
theory question
asked
Jun 13, 2017
by
pady_1
0
answers
with the help of circuit diagram explain how can a potentio meter used to measure the internal Resis
cbse
class 12
physics
current electricity theory question
answered
Jun 13, 2017
by
pady_1
1
answer
with the help of circuit diagram explain how can a potentio meter used to measure the internal Resis
cbse
class 12
physics
current electricity theory question
answered
Jun 13, 2017
by
pady_1
1
answer
With the help of the circuit diagram explain how can a potentio meter the used the compare the E.m.f
cbse
class 12
physics
current electricity theory question
answered
Jun 13, 2017
by
pady_1
1
answer
What are the advantages of potentio meter over a old meter ?
cbse
class 12
physics
current electricity theory question
asked
Jun 12, 2017
by
pady_1
1
answer
What is potentiometer ? give its construction and principle
cbse
class 12
physics
current electricity theory question
asked
Jun 12, 2017
by
pady_1
1
answer
What is a wheat stone Bridge ? When is the bridge said to be balanced ? applied Kirchhoff's la
cbse
class 12
physics
current electricity theory question
answered
Jun 12, 2017
by
pady_1
1
answer
What is a wheat stone Bridge ? When is the bridge said to be balanced ? applied Kirchhoff's la
cbse
class 12
physics
current electricity theory question
answered
Jun 12, 2017
by
pady_1
1
answer
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