Recently Active Physics Questions

Statement 1: In a conductor of non- uniform cross-section, the current is same, though the drift velocity is different. Statement 2: In series current is same and for same current drift velocity is inversely proportional to c ...

Matrix match type. Two infinitely long line charges L1 & L2 are placed symmetric to x-axis as shown. Match the foll. for directions of electric field at point P on the x-axis. *Image* Column-1 A)Both L1 & L2 are +ve. B)Both L ...

a manometer reads the pressure of a gas in an enclosure as shown in (a).When some of the gas is removed by a pump,the manometer reads as in (b).the liquid used is mercury and atm pressure is 76 cm of mercury. 1) find the abso ...

If two plane mirrors are placed perpendicular to each other , if a ray of light falls at an angle "a " with the plane of one mirror. Find the value of "a" so that reflected ray becomes parallel after reflection from second mi ...

*Image* Distance b/w A & B is l Rate of area swept by the conducting element = dA/dt = V l TRUE / FALSE ...

A bird in air is diving veritcally over a tank with speed 5 cm/s. Base of tank is silvered. A fish in the tank is rising upward along the same line with speed 2 cm/s. Water level is falling at a rate of 2 cm/s.{n of wter is 4 ...

The walls of a closed cubical box of edge 50 cm are made of a material of thickness 1 mm and thermal conductivity 4 * 10^-4 cal per sec per cm per °C. The interior of the box maintained at 100°C above the outside temperatur ...

Statement 1: Two particles are projected towards each other from a very large distance along the line joining them on a smooth frictionless surface. Their speeds may decrease as they approach each other. Statement 2: The net ...

*Image* ...

1)if Y represents acceleration and X momentum,then the dimension of (d2Y / dX2 )1/2 is ??? A) M-1 L-1/2 T0 B) M L1/2 T-1/2 C) M-1 L1/2 T1/2 D)M0 L1/2 T1/2 2)the position vector of a particle is given by r=r0(1-αt)t ,where t ...

4)a smooth 2 kg collar C shown in figure is attached to a spring having a stiffness of k=3N/m and an unstretched length of 0.75m. If the collar is released from rest at A,determine its acceleration and the normal force at the ...

*Image* ...

find the resistance between the points a and b. please show me the full solution *Image* ...

(1) Which of the following is/are INCORRECT about kinetic friction ? (A) always acts in opposite direction of the applied force (B) total work done by this friction force on the system may be zero (C) direction of friction is ...

In a certain region of space, the potential field depends on x & y coordinates as- V =(x2+y2) . Represent graphically the electric field lines in the corresponding x-y plane. ...

*Image* ...

If position of a particle varies with time as x = t^3 - 3t^2, whre t is in second. Then magnitude of displacement is equal to distance traveled of the particle at t=???? ...

What is the use of heavy resistance R2??? Please rply....quite urgent... *Image* ...

Will there be any impulse if the angular momentum changes??? ...

A steady non- turbulent stream of water comes out of a tap and falls vertically downward. As it does so, the diameter of the stream appears to get smaller, what is the reason? ...

*Image* A heaps of chain is lying on a horizontal table. A small section of the chain is released through a hole in the table. Calculate the velocity as a function of the length of the chain hanging vertically. A. √(2gx/3) ...

if a charged particle is projected with velocity v in a region o f electric and mag fields, v, E and B perpendicular to each other...what will happen f E is switched off for some time and then again switched on??? ...

A MAN IS STANDING ON A WEIGHING MACHINE WHICH READS ZERO.HOW DO WE KNOW IF THE MAN IS INSIDE A FREELY FALLING LIFT OR IN A SATELITE. ...

Q1,2 *Image* Q3 *Image* ...

A plane mirror is placed 25cm away frm a spherical concave mirror (R=40cm) perpendicularly to the principal axis of the concave mirror. Where is a candle placed, if its images formed by the two mirrors independently are at th ...

*Image* the marked pulley has mass and is going down with a=13...now please write the equations relating the acceleration of various masses and the pulley!!!! ...

got this question frm goiit.com but din get its solution....pls temme the approach to such problems Q-A boy throws a ball upwards with a velocity 20m/s.The wind imparts a horizontal acc. of 4 m/s^2 to the left.The angle @ at ...

A rope with length L and mass density σ kg/m hangs over a massless pulley. Initially, the ends of the rope are a distance x0 above and below their average position. The rope is given an initial speed. If you want the rope to ...

*Image* HOW TO GET THE ACCELERATION OF WEDGE "M"?? ASSUME ALL SURFACES FRICTIONLESS ...

*Image* a parralle of beam of light falls on the quater of the cirlce of radius R as shown n the figure.RI of the quater of the cilcle is 3 nd of the surrouding medium is 1 . maximum value of OP as show in the figure so that ...