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Recent questions and answers in Class XII Physics
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Two charges are at distance d apart in air. Coulomb force between them is F. If a dielectric material of dielectric constant K is placed between them, the Coulomb force now becomes (a) F/K (b) FK (c) F/K2 (d) K2F
asked
Sep 20
in
Class XII Physics
by
Rishabh123Sigh123
(
15
points)
two charges are at distance d apart in air. coulomb force between them is f. if a dielectric material of dielectric constant k is placed between them
the coulomb force now becomes (a) f k (b) fk (c) f k2 (d) k2f
0
votes
0
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Explain how to differentiate between a plane mirror, concave and a convex mirror
asked
Aug 22
in
Class XII Physics
by
Ovasi
(
15
points)
0
votes
0
answers
The ratio of energies o moving particle and photons is1\100. Their velocity are in the ratio1\10. Then the ratio of de brogile
asked
Aug 21
in
Class XII Physics
by
Anbarasugayathri
(
15
points)
0
votes
0
answers
Two cells in opposition to each other. One cell has emf of 6V and internal resistance of 2 ohm and other cell has emf of 4V and internal resistance of 8 ohm.The potential difference across terminals X andY is
asked
Jul 28
in
Class XII Physics
by
Atharva_91
(
15
points)
0
votes
0
answers
Please help this question
asked
Jun 28
in
Class XII Physics
by
Mohd soud
(
15
points)
physic
0
votes
0
answers
The displacement of a particle is given by y =A sin kt where t denotes time. The SI unit of k is
asked
Jun 21
in
Class XII Physics
by
Gulnaz shamrin
(
10
points)
units and measurements.
0
votes
0
answers
The potential energy of a point charge q placed at a distance r on equatorial position from a short electric dipole having dipole movement p will be
asked
May 24
in
Class XII Physics
by
Prathik somayaji
(
10
points)
electrostatic potential and capacitance
0
votes
0
answers
Two Point charges -q and 3q are separated by a distance a.the net electric potential due to these charge at mid point between them will be
asked
May 24
in
Class XII Physics
by
Prathik somayaji
(
10
points)
electrostatic potential and capacitance
–1
vote
0
answers
Why Perfect electrostatic sheildlig is possible but perfect magnetostatic sheilding is not possible ?
asked
May 19
in
Class XII Physics
by
Dmlb
(
10
points)
0
votes
0
answers
Why magnetostatic sheilding is not possible?
asked
May 19
in
Class XII Physics
by
Dmlb
(
10
points)
0
votes
0
answers
A sphere encloses a dipole within it.The total flux across the surface is
asked
May 3
in
Class XII Physics
by
uthara
(
17
points)
0
votes
0
answers
An em wave exerts pressure on the surface on which it is incident
asked
Feb 15
in
Class XII Physics
by
Adhityaraj
(
15
points)
electromagnetic waves
0
votes
0
answers
Critical angle will be
asked
Feb 1
in
Class XII Physics
by
Reza qudsi
(
15
points)
0
votes
0
answers
What is Zener diode?
asked
Jan 31
in
Class XII Physics
by
nitishkr420
(
15
points)
0
votes
0
answers
Two cells of E.M.F. 10 V and 2 V and internal resistances 10 ohm and ohm resp are connected in parallel as shown. Find the effective voltage across R.
asked
Dec 26, 2018
in
Class XII Physics
by
mridul.tulsyan
(
15
points)
0
votes
2
answers
A TV transmission tower antenna is at a height of 20 m.
answered
Dec 16, 2018
in
Class XII Physics
by
udit giria
Basic
(
24
points)
communication systems
+1
vote
0
answers
Propagation constant of wave
asked
Nov 28, 2018
in
Class XII Physics
by
Reshmi
(
16
points)
0
votes
0
answers
Electric field and charge
asked
Nov 10, 2018
in
Class XII Physics
by
Bhushan
(
15
points)
0
votes
2
answers
A short object of length L is placed along the principal axis of a concave mirror away from focus.
answered
Nov 3, 2018
in
Class XII Physics
by
venkatajognapalli
Basic
(
28
points)
ray optics and optical instruments
+1
vote
0
answers
Current i1&i2 through a resistor R1 10ohm &R2 30ohm with E1=3v,E2=3v &E3=2v are resprctively
asked
Oct 10, 2018
in
Class XII Physics
by
Ankita
(
16
points)
current electricity
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