Recently Active Physics Questions

A homogeneous rod AB of length L=1.8m and mass M is pivoted at the center o such that it can rotate freely in the vertical plane . The rod is initially in the horizontal position. A insect S of the same mass M falls verticall ...

a CHARGED PARTICLE & AN UNCHARGED PARTICLE..HAVE THE SAME LINEARvelocity.tHEY WILL HAVE THE SAME DE-BROG;IE WAVELENGTH.. tRUE OR FALSE.. i AM GETTING FALSE BUT ANSWER IS TRUE ...

*Image* a small particle of mass M/10 is moving horizontally at a height of 3R/2 from ground with velocity 10 m/s. a perfectly inelastic collission occurs at point P of sphere of mass m placed on smooth horizontal surface. th ...

a triangular lamina of area A n height H is immeresd in a liquid of density ρ in a vertical plane with its base on the surface of the liquid.the thrust on the lamina is?? ...

a convex lens with focal length f is trisected parallel to the optical axis.what's the new focal length? ...

Two charges of values 5μC and 2μC are placed inside and outside of a uncharged conducting shell at a distance of 3 m. The force on 5μC charge will be: a. 10mN b. 5mN c. Zero d. can't be found ...

Q1 A heavy body of mass 10 kg is to be dragged along a horizontal plane(μ=1/√3).The least force required is a) 50/√3 N b) 100/√3 N c) 50 N d) 100 N ...

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*Image* a smooth hollow right circular cone has a vertical angle 2θ & is placed with its vertex downwards as shown it is rotated about its axis with a frequencyn a body dropped into it along d edge slides a little distance & ...

In which solid the velocity of sound is greater? ...

What amount of heat will be generated in the circuit shown after the switch Sw is shifted from position 1 to position 2? *Image* ...

pls explain me in detail abt forward slipping and backward slipping. ...

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a ball whose density is 0.4 * 103kg/m3 falls into water frm a height 9 cm.to wat depth i will sink??? 1.9 cm 2.6 cm 3.4.5cm 4.2.25cm ...

A man wants to produce sound of frequency 680 Hz using a closed organ pipe of length 34cm. What should he do? a. He should break the close part of pipe. b. He should apply more and more pressure to produce then open end c. he ...

The changes are isothermal if the temp of the gas remains constant - st1 ∫P dV (limits V1 to V2) =Δ W is negative, volume expands , ΔQ is negative....st2 ...

There is a thin uniform hemi- .. bowl of mass m and rad R is lying on a smooth smooth horizont surf..F is applied perpendicular to the rim...The inst angular accl of the bowl?? k=F/3mR a. 20k b. 10k c. 40 k d. 5 k ...

A rough cricular platform is fixed to a frictionless vertical axle.Its radius = 1m and M.I. = 200 kg-m2.A man of 50 kg stands on the edge of it.All are at rest initially.Then the man starts walking along the edge with a const ...

*Image* There is a water retaining wall with semi cylindrical gate(ABC) at its bottom of radius 'R' and length 'b'. If 'H' be the height of the structure and 'ρ' be the density of water.... Q1 :- The horizontal component of ...

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a parallel beam of light enters a clear plastic bead 2.5 cm in diameter and index 1.4. at what point beyond the bead are these rays brought to a focus ???? ...

*Image* a small partical of mass m n its restraining cord r spinning with an angular velocity ω on the horizontal surface of a smooth disc as shown..the force F is slightly relaxed , r increases n ω changes. 1.∂ω/∂r=-Ï ...

*Image* plz explain how to do it... ...

how does a SCR(silicon controlled rectifier) work? How is a SCR used in sawtooth wave oscillator ...

*Image* find the minimum forcesuch that df/dF=0(where f is the frictional force and F is the force) a)10 N b)50/3 N c)20 N d)50 N ...

Firse CHANGE!!!! DOES THE FOL. comp GIVE +VE neutral FeCl3 Test ??? If not y not ??? *Image* ...

*Image* plz explain wt to do.. ...

koi bhi kar sakta hai bas [3] *Image* ...

*Image* in d fig shown ABCD is a fixed smooth conducting frame in horizontal plane . T is a bulb of power 100 W. P is a smooth pulley OQ is a conducting rod neglect the self inductince of the loop and resis of any part other ...

A conducting spherical shell of rad. R is placed concentrically inside another similar shell of rad. 2R. The inner shell has a charge Q. If it's connected to the outer shell by a coducting wire , find loss in elec.energy .... ...