Recently Active Physics Questions

A disc of mass 2M lying in vertical plane is free to rotate about a fixed horizontal axis passing from its centre. A particle of mass M is tied to a string of length 2R and another end of the string is attached to the disc as ...

The period revolution of a nearest satellite around a planet of radius R is T. Period of revolution around another planet, whose radius is 3R but having same density is : also give appropriate reason ...

*Image* PL ATTEMPT DA FIRST QUE..... ANS : "B" not a) ...

Q1) A 35 mm slide with a 24 mm*36 mm picture is projected on a screen placed 12 m from the slide.The image of the slide picture on the screen measures 1.0 m *1.5 m.Determine the location of the projection lens, and its focal ...

can the formation of the virtual and real image can be explained by wave theory if so pls explain ...

A rod of glass μ=3/2 and of square of cross section is bent into the shape shown in *Image* A parallel beam of light falls perpendicularly on the plane flat surface A.Referring to the diagram,d is the width of the side and R ...

Guys, I'm all at sea with concepts on impulse. Pls explain what impulse is and then give formulas related to it. Pls guys. Thanx in advance [1] ...

two balls of masses A and B , M=9g and m=3g is attached by the the=reads to a point O such that (OA+OB) length is 1m The system is set into rotational motion in a horizontal plane about the vertical axis passing through O wit ...

Draw the graph between reactance and frequency in a series LC circuit ...

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Can someone prove that for a hollow sphere given a uniformly distributed charge Q and rotated with ang. vel. ω the magnetic moment of sphere = (Q/3)* r2ω where r is radius ...

two radioactive substances X and Y emit alfa and beta particles respectively Their disintegration constants are in the ratio 2:3 To have equal probabilities of getting emission of alfa and beta particles the ratio of number o ...

1. Why do cricket bats have concentrated mass at the bottom of the bats 2. When compared with the size of the aircraft , the size of the wheel is small . Why it is so ? ...

at what distance from each other should 2 men stand for an eye to distinguish them from a distance of about 11 km. the resolving power of a normal eye is approximately 1. ...

why does the moon ,purely white in the daytime have a yellowish hue after sunset? ...

consider an evacuated chamber placed on a frictionless surface.A pinhole is made on one side of the chamber as in figure.wat will happen to the block after the pinhole is made *Image* ...

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A static charge distribution produces a radial electrid field E = ae-br/ r2 where a nad b are constants. total charge responsible for this field is ? A) 0 B) 4Πε0ar C) 4Πε0br D) 4Πε0ae-br I think it should be D . it is ...

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the length of the day from today when the sun is directly overhead till tomorrow again when the sun is directly overhead can be determined by revolution of earth around the sun Please explain how is it correct ...

Find angular frequency of motion of block of mass m if it is displaced slightly along horz.Neglect inertia effect of rod .Spring constants are k1 and k2.Neglect friction *Image* ...

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a uniform rectangular block has a length twice as large as breadth It is lying on a horizontal plane which is gradually being raised so as to be inclined to the horizontal at an angle theta For what value of theta the block b ...

the driving side of a belt has a tension 1600N and the stock side has 400 N tension The belt turns a pulley 40 cm in radius at the rate of 300 r.p.m. to a dynamo The power delivered is Please give the solution ...

a satellite is revolving close to earth in a circular orbit with speed v=√gR where R is radius of esrth .wat wil hapen if its speed is increased from v to √1.5 v ...

a particle of mass m is projected with velocity v making an angle of 45° with the horizontal The magnitude of the angular momentum of the projectile about the point of projection when the particle is at the maximum height h ...

a uniform rod pivoted at its upper end hangs vertically It is displaced through an angle of 60° and then released Find the magnitude of force acting on a particle of mass dm at the tip of the rod when the rod makes an angle ...

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Please help me out people. Charges flow only when there is a potential difference b/w two points. Also in a wire, there is a potential difference b/w two points only when there is an electric component b/w them. So in an ordi ...

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