Recently Active Physics Questions

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*Image* C1 is 2pF C2 is 3pF V1 is 30V V2 is 20V What will be the potential difference of both capacitor when (i) S1 is closed (ii) S3 is closed (iii) S1 & S2 is closed (iv) S1 & S3 is closed ...

how to find time constant for RC circuit consisting of more than one resistance and capacitance ...

*Image* mujhe kuch ni samah ra ...

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*Image* m gettin sum diffrnt answers n d answers given r diffrnt ...

a parallel combination of 0.1 M Ω resistor and a 10μF capacitor is connected across 1.5 V source of negligible resistance . the time required for the capacitor to get charged upto 0.75 V will be ???????????????????????????? ...

assertion : a paralell plate air cap is charged using a batry and a diectric slab is then inserted in d whole space betwn itz plate widout disconentcing d battry consequntly d charge on d cap increases bt d elctric field stre ...

electricity................................................................................. let me add some spice in your life .. what kind of circuit model is also known as SPICE . ...

two trains A N B r moving with speeds 40 m/s n 60m/s resp in same direction in a straight line track,with B ahead of A.THE ENGINES R AT front ends.the engine of train a blows a long whistle.assume that the sound of whistle is ...

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in case of superposition y1=4sin(1026Î )t n y2=2sin(1024Î )t a)ratio of max to min intensity is 9\ b)amp of resulting wave vries at frequency of 3 hz c)freq of resulting wave is 510 hz d) beat freq is 6 hz ...

the frequency of note heard by listener increases by 10% when the listener is moving towards stationary source.find incorrect ans a)v of listener is 10% vel of sound b)vel of listener is doubled ,then change in frequency is d ...

Two trains A and B are moving with speeds 20 m/s and 30 m/s respectively in the same direction on the same straight track, with B ahead of A. The engines are at the front ends. The engine of train A blows a long whistle. The ...

Optical riddle ................................................................................. Newton told us the three laws of motion , But he also gave us a formula in optics which u have to mention . ...

In the figure shown surface of massless pulley is smooth. The string is massless. The two blocks are placed on a smooth horizontal surface . A time varying force F=20t is applied. Considering the two blocks and the pulley and ...

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*Image* IT WAS ASKED IN IIT 2008 A uniform thin cylindrical disk of mass M and radius R is attached to two identical massless springs of spring constant k which are fixed to the wall as shown in the figure. The springs are at ...

wats max error in measurement generally ? L.C or half of L.C different buks gve different ans wats the right one ? ...

true or false The air bubble has only one free surface. ...

*Image* A spherical portion has been removed from a solid sphere having a charge distributed uniformly in its volume as shown in the figure. The electric field inside the emptied space is (A) zero everywhere (B) non-zero and ...

*Image* *Image* whats the concept behind ...... this concept is asked frequently in the JEE ...

In an experiment to determine the focal length (f) of a concave mirror by the u-v method, a student places an object pin A on the principal axis at a distance x from the pole P. The student looks at the pin and its inverted i ...

a large closed vessel of height H contains a liquid. at the intial moment, the height of the liquid in the vessel is H/2, the space above being filled with air at atmospheric pressure. when the height falls to H/4, find the v ...

Simple HCV probs........... 1. A thin, metallic spherical shell contains a charge Q on it. A point charge q is placed at the centre of d shell and another charge q1 is placed outside it as shown in d fig. All d three charges ...

a radioactive nucleus of mass M emits an alpha particle of mass m and recoils freely. if the kinetic energy of the alpha particle is K, find the kinetic energy of the daughter nucleus. ...

if traffic rules are changed in india n instead of left lane rule vehicles r ordered to drive on right side on roads wat ll be effect on length of day? ...

Two cars A and B are moving in the same direction with the uniform velocities of 40km/hr and 30km/hr respectively. They are separated by a distance of 5km. Another car C moving in the oppostie direction with a velocity of 25k ...

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