Popular General Physics Questions

St 1 A positively charged sphere and negatively charged sphere r kept at a finite distance The total electrostatic PE of the system must be negative St 2 PE b/w 2 like charge particle is +ve and 2 unlikely charged particles i ...

(1) Find the root mean square current of one cycle in an A.C. circuit in which instantaneous current is given by equation 1= 31 + 6 sin wt - 8 cos (wt ). ...

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? ...

If a lens is immersed in a liquid( of different Refractive Index) the focal length wud change TRUE / FALSE ...

A piece of straight conducting wire 1m long is held horizontally at a height pointing east to west.Then the wire is let fall freely.Find the difference of potential between the ends of the wire after 1 second.Horizontal compo ...

In theory of nos there is a symbol inverted capital E what is that symbol?what is most imp from theory of nos for olympiad ...

As there is a large separation between molecules of gas,what is in between the molecules ? Is vacuum existing there ? ...

Let a,b,c,d be real nos. in G.P. If u,v,w satisfy the equations : u+2v+3w=6 4u+5v+6w=12 6u+9v=4 then show that the roots of the equation ( 1/u + 1/v + 1/w )x2 + [(b-c)2 + (c-a)2 + (d-b)2]x + u+v+w = 0 and 20x2 + 10(a-d)2x - 9 ...

what will be the fbd for a jumbo jet which is going to take off and in flying state? why the centre of gravity of a nascar car is kept near the ground? does it inrease the friction? ...

heyy ppl..can sum1 tell me.how to concentrate in physscs...m done a lott wid chem n maths..but cant just study physics...any helpp????? ...

Ok here r a few ques i found quite tricky...well at least to me they were tricky..and hence i cud not solve them:)so pls do me a favour and solve them for me. 1)Solve |2x-1/x-1|>2 2)Solve |x/x-1|+|x|=x2/|x-1| 3)solve (x+3) ...

What is the reason of the formation of coriolis effect in the earth? ...

If a tunnel was dug from one end of the Earth to the other end through the centre of the Earth and a ball would have been relesed in the tunnel at one end , What would have been the ball's motion?Why? ...

i am sorry..i should've put this questn up in the chemstry section...but stil...plz answer this plz explain me what are ligands ...

who are the teacher here? ...

1) Solve the inequality for real values of x: | x-3/x2-4 |≤ 1 (entire under mod) ...

Why does sublimation occur in camphor?? ...

What is meant by parsec? ...

is knowledge of black body radiation essential for entrance exams ...

viscoscity of any liquid depends upon viscous force,area of cross-section A and velocity gradient of the liquid.deduce the relation of viscos course in terms of coefficient of viscoscity. ...

calculate net capacitance of this .. *Image* A) 3C B) 2C C) C/2 D) 25C/3 ...

a parrot is sitting on the floor of a closed glass cage which is in a boys hand .if the parrot starts flying with constant speed ,the boy ll feel the weight of the cage a)unchanged b)reduced c)increased d)nothing can be said ...

If there were no atmosphere the average temperature of the earth's surface would be... a. lower b. greater c. same as now d. can't say ! ...

*Image* ...

can anyone explain Knee voltage w.r.t. diodes ...

Calculate the coefficient of refraction of a sound wave on the boundary between air and glass. Young’s modulus for a glass is 6.9 * 1010 Nm-2 , density of glass is 2.6gcm-3 and air temperature is 20°C . velocity of sound i ...

in a stationary wave on a string,is the elastic potential energy max at the nodes?(thats what i thought till now until i saw fiitjee's solutions to a paper) ...

1) A wheel with a radius 45 cm rolls without slipping etc. At time t1 a painted pt p is at the bottom of the wheel in contact with the floor. At a time t2, The wheel has rolled thru 1 half revolution.What are a)Magnitude b)an ...

The whole length of the screw of screw gauge is 4 cm this corresponds to 40 rotations of the screw Also , the circlular scale is marked at every 1 degree. Fidn the Pitch and the least count ...

1. Frictionless support -------> the reactions act normal to the surface at the point of contact as shown *Image* 2. Roller and Knife edge support -------> the rollr and knife edge restricts the motion normal to the sur ...