Recently Active Physics Questions

n cells each of emf E and identical resistance r are grouped into sets of cells connected in series.The (n/K) are then connected in parallel to a load resisance R.Then find max. power delivered. ...

Q Fig. shows three cases: in all the cases the circular part has radius R and straight ones are infinitely long for same I.The magnetic field in the three cases has the ratio? Fig follows......... ...

In any interference pattern, we get only dark and light bands. Why are we not getting bands of intermediate brightness? [7] ...

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a point moves in the x-y plane according to the relation x=a sin wt and y=a(1-cos wt) The distance travelled by a point during time T is Please give solution ...

wat is difference in gravitational mass & inertial mass ...

why electric field lines are not intersecting ...

A man was traveling to Kasoa (A place in USA) At the bus stop, he met a man with 7 wifes. Each wife has 12 sons and 12 daughters Each daughter of the man's wife had 4 sons and 7 daughters ,each son of the man's wife h ...

Q1.) in a concave mirror, distance of an object from focus : 4 cm. ---------------its image from focus : 9 cm. find the focal distance.. (give the sign as well) (time : 1 min). ...

What is dispersive power? ...

EXTREMELY SORRY PPL!!!!!!!!!!! I MESSED IT UP :( THIS IS DA CORRECTED VERSION!!!! *Image* SORRY ONCE AGAIN!!!!! ...

Three balls of radii 'R' are placed at the corners of an equilateral triangle of side 4R. Ball 1 is given charge +Q and balls two and three are earthed. A fourth identical ball placed very far from this system is connected to ...

*Image* four equal and identical charges are placed at the vertices of a square There is a netforce act upon each charge q.but it is not accelerated why? ...

A plane mirror is placed in yz plane facing towards the negative x axis.The mirror is moving parrallel to y axis with a speed of 5cm/s A point object P is moving in front of the mirror with a velocity 3cm/si+4cm/sj+5cm/sk fin ...

Pls forgive me if this question is idiotic beyond compare. But that's what this series is all about - SILLINESS PERSONIFIED [4] Here goes: If you connect a motor and generator in such a way that one's output is the ot ...

A uniform rod of mass m and length l rests on a smooth horizontal surface.One of the ends of the rod is struck in horizontal direction at right angles to the rod.As a result the rod attains a velocity v.Find the force with wh ...

- Mechanical energy is the sum of potential & kinetic energy. - Potential energy can be due to gravitation or in other forms like an extended or compressed spring. - The formula, that the potential energy of a body at a heigh ...

in an inverted cone (of height h) a particle is kept on its curved surface at height h/2 & given a velocity v tangentially .if the particle comes out in a parabolic path with max height attaned =h/2 then find v? ...

2 equal smooth spheres of radius r move with same speed in opp directions along parallel lines at a distance c apart. (c<2r). PRove that motion of each deviates through right angle if c2-(1+e)=rer2 where e is coeff of ...

A solid spherical region having spherical cavity(concentric) whose diameter R is equal to radius of spherical region ,has a total charge Q.Find electric potential at point at distance x from centre . ...

A ray is incident parallel to one of the mirrors.The ray will start retracing its path after 3rd reflection if θ=___ *Image* ...

in an electron tube 1.8X1017 electrons are emitted per sec on applying 400V to a plate All the electrons reach the plane The maximum current generated in the plate circuit is ans is 29 microA ...

current flowing through a p-n junction when revese biased is 2X10-7A If a forward bias of 0.1 V is applied across the junction Then what is the current ...

Two long parallel conducting horz rails are conneted by conducting wire at one end.A uniform magnetic field B(directed vertically downwards) exists in region of space.A light uniform ring of diameter d which is practically eq ...

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*Image* when a heavy rope is hanging from its supports as shown in figure what is the tension in the middle of the string ...