Recently Active Physics Questions

Three rods of identical cross sectional area are made up of same metal from the sides of an isosceles triangles ABC, right angled at B. The point A and B are maintained at temperatures T and 2 T respectively. In the steady st ...

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a metre bridge is used to determine d resistance of an unknown wire by measuring d balance point L.if d wire is replaced by another wire of same material with double d length n half d thickness d balancin point is expected to ...

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EK AUR DBT FRM 2007 PAPER 2!!! PL. SEE *Image* 2) two pt. charges onne +ve and other -ve OF same magnitude are placed at (0,0,a/2) and (0,0,-a/2) respectively. Find work done by the electric field wen another +ve pt. charge i ...

how to find the total no of fringes in an interference pattern in YDS ...

Three concentric metallic shells A,B, C of radius a,b,c a< b <c have surface chrge densities of σ,-σ, σ respectively Find the potential of the three shells A,B, C if shell A and C have the same potential then find th ...

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A:Work done by the engine of the car is equal to the change in its K.E. B:Internal forces can increase the K.E. of the system (i)Both true,B is the correct explanation of A (ii)Both true B is not the correct explanation of A ...

A small light pulley is attached with a block C of mass 4kg as shown. A block of mass 1.5kg is placed on the top horizontal surface of C. Another block A of mass 2 kg is hanging from a string, attached with B and passing over ...

High quality lenses are often coated to prevent reflection. A lens has an optical index of refraction of 1.72 and a coating with an optical index of recraction 1.31. For near normal incidence the minimum thickness of the coat ...

I just wanted to ask that the "Upload Image" option in the above menu when clicked gives no response.How to upload image from the computer????Pls Help ...

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two particles are projected simultaneously in the same vertical plane, from the same point, but with different speeds and at different angles to the horizontal. find the path follwed by one, as seen by the other.... ?? a) a v ...

Q. 12 Statement 1: Change in internal energy between two states is independent of a thermodynamic process and Statement 2: Change in internal energy U = nCv (T2 - T1) is valid for all processes. 1. Statement 1 is True, statem ...

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A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is? ...

a black body is at temperature of 2880 K. The energy of radiationemitted by this object with wavelength between 499 to 500 nm is U1, between 999 to 1000 nm is U2 and between 1499 and 1500 nm is U3. The wien constant b=2.88x10 ...

At 27 degree C two moles of an ideal monoatomic gas occupy a volume V. The gas expands adiabatically to volume 2V calculate the final temp, change in internal energy and work done. ...

*Image* a uniform bar of length L stands vertically touching a wall OA, when slightly displaced, its lower end begins to slide along the floor . obtain an expression for the angular velocity ω of the bar as a function of θ ...

A monoatomic ideal gas of two moles is taken through a cyclic process starting for A as shown in the figure .The volume ratios are VB/VA=2 and VD/VA=4. If the temperature TA at A is 27 degree C, calculate a) The temperature o ...

An ideal gas is taken through a cyclic thermodynamic process through four steps. The amounts of heat involved in these steps are Q1=5960J, Q2=-5585 J , Q3=-2980 J and Q4= 3645 J respectively. The corresponding works involved ...

A spherical black body with radius 12 cm radiates 450W power at 500 K . If the radius were halved and the temperature doubled, the power radiated in watt would be? ...

*Image* if radius is R and resistance per unit lengthis r,then equivalent resistance across PQ is ______ (give explanations) ...

A 5 m long cylindrical steel wire with radius 2x10-3m is suspended vertically from a rigid support and carries a bob of mass 100Kg at the other end. If the bob gets snapped, calculate the change in temperature of the wire ign ...

. Upthrust is independent of A. shape of the body 2. Specific volume is independent of B. size of the body 3. Specific resistance is independent of C. mass of the body 4. Heat capacity is independent of D. material of the bod ...

a uniform thin rod of mass m and length l is standing on a smooth horizontal surface. A slight disturbance causes the lower end to slip on the smooth surface and the rod starts falling. find the velocity of centre of mass of ...

An unexpected question....may be HCV expects this in iit2009: When Neils Bohr shook hand with Werner Heisenberg, what kind of force they exerted? (a) Gravitational (b) Electromagnetic (c) Nuclear (d) Weak I just doubled up in ...

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