Recently Active Physics Questions

MATCH THE COLUMN : LIST A LIST B 1) A charged particale goes undeviated A) E= 0, B= 0 in electric and magnetic field if 2) A charged particle moves in a circle B) B= 0, E≠0 in the presence of E and B if 3) A charged particl ...

Two identical thin rings each of radius R are co axially placed a R distance apart . If Q1 & Q2 are respectively the uniformly spread on the two rings , the work done in moving a charge "q" from the center of one ring to the ...

Why does not a ray get reflected in the same path of incident ray?(ie trace its original path) Both the laws of reflection holds true ,i.e.they lie in the same plane and angle i =angle r.......... ...

*Image* if charge is distributed uniformly in the x-y plane with charge density +(sigma) in 1st quad and -(sigma) in remainig quad then work done in miving a point charge q from (0,0,d) to (0,0,2d) is A) -(sigma)qd/4e B) (sig ...

*Image* A FLEXIBLE CHAIN OF MASS M HANGS BETWEEN TWO FIXED POINTS AT A AND B AT THE SAME LEVEL.THE INCLINATION OF THE CHAIN WITH THE HORIZONTAL AT TWO POINTS OF SUPPORT IS THETA.THE TENSION AT THE MID POINT OF THE CHAIN IS 1- ...

Two particles A & B are moving as shown in the figure. At this moment of time the angular speed of A w.r.t. B is *Image* a)( va+vb)/r b)( va-vb)/r c)( vbsin \Theta b-vasin \Theta a)/r in the anticlockwise direction d)( vbsin ...

A Diverging Lens is placed with its pole at the origin and its principal axis along the x-axis.Equation of an incident ray is given by y=- x/2 +3. The focal length of the lens is 4 cm.Find the equation of the divergent ray?? ...

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TWO CONDUCTING SPHERE OF RADII a AND bHAVE CHARGES Q1 AND Q2.DISTANCE BETWEEN THE SPHERE IS R IF E1 AND E2 ARE ELECTRIC FIELD VECTORS AT ANY POINT THEN WHAT IS THE VALUE OF (EPSALION)0∫E1.E2 dv 1-K Q1 Q2/R 2-KQ1.Q1/a+kQ1.Q2 ...

The given graphs show the variation of photoelectric current(I) with applied voltage for two different intensities of the incident *Image* ...

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prove that... If a ball of mass m collides with another stationary ball of mass M then the maximum angle of deviation of the ball of mass m is sin-1M/m ...from post (http://targetiit.com/iit_jee_forum/posts/balls_in_a_semi_ci ...

*Image* correct ans are a,c,d...... Plz giv the explanation for option c. ...

*Image* correct ans are a,c Plz explain ...

*Image* since the botom surface of cylinder is in liquid B then how can buoyant force can be aplied by liquid A on cylinder in upward direction as no bottom surface is in liquid A ? also it views that liquid A will apply forc ...

Two charges +q1 and -q2 are placed at A and B respectively. A line of force emanates from +q1 at an angle \alpha with AB. At what angle \beta will it terminate at -q2 ? *Image* A) sin^{-1}[\sqrt{\frac{q_{1}}{q_{2}}}sin\frac{\ ...

Please dont ban me for such idiotic doubts [2] Q ] match the columns *Image* ...

a ray incident on a plane mirror. for what angle of incident the ray wll undergo deviation of 4pi/5 radian ...

a current carrying wire is curved.hence electrons flowing wold recieve an acceleration.as the electrons are acecelarating would not they radiate energy. ...

what is vacua junction? ...

In a closed circuit, the current I ( in amp.) at an instant of time t( in secs) is given by I = 4 - 0.08t. The no. of electrons flowing in 50 s trough the cross section of the conductor is A) 1.25 x 1019 B) 6.25 x 1020 C) 5.2 ...

A particle 'A' of amss 2m collides elastically with another particle of mass 3m at rest, and as a result 'A' is turned by 90 degree. The fraction of the kinetic energy that 'A' looses as a result of the collision is a) zero b ...

Over a certain region of space , the electric potential is V= 5x-3x^2y+2yz^2 the amgnitude of electric field at origin is (in N/C) a) 3 b) 5 c) 2 d) 18 ...

A metal ring of mass m and radius R is placed on a smooth horizontal table and is set rotating about its own axis in such a way that each part of the ring moves with a speed v. Find the tension in the ring. ...

A uniform ladder of mass 10 kg leans against a smooth vertical wall making an angle of 53° with it. The other end rests on a rough horizontal floor. Find the normal force and the frictional force that the floor exerts on the ...

1.COLUMN MATCH C-I C-II A)RAY OPTICS I)PARTICLE NATURE B)PHOTOELECTRIC EFFECT II)WAVE NATURE C)BOHR MODEL III)QUANTIZATION D)A RADIOACTIVE IV)EMIT ELECTROMAGNETIC WAVE MATERIAL 2 *Image* ...

Can we get a electrric shock from household utensils and water tap? from some days whenever i get up from mah sleep ...n touch the water sink tap....i get a shock....then wenever i touch the window grill...then also the same ...

Capacitance of an isolated spehere is increased n times when it is closed by an earthed concentric sphere. Then the ratio of their radii becomes??? ...

1) (Multiple Answers Correct) An elliptical cavity is carved within a perfect conductor. A +ve charge "q" is placed at the centre of the cavity. Then- *Image* A) Elec. field near A = Elec. field near B (in the cavity). B) Cha ...

*Image* A thin horizontal disc of radius R=10 cm is located within the cylindrical cavity filled with oil whose viscosity is ∩ =0.08P. the clearance between the disc and horz. planes of the cavity is equal to h=1.0mm.Find t ...