Recently Active Physics Questions

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*Image* Becoz the words are a bit unclear.."Metallic square of edge l in a vertical plane. Uniform Magnetic field perpendicular to plane of figure. The sqaure is being deformed into a rhombus due to force exerted on it by the ...

A comet is moving in a parabolic path around the Sun in the same plane as the orbit of Earth (without any collision with the Earth, obviously!). Determine the maximum time that this comet can spend within the Earth's orbit, w ...

In a standard YDSE setup, two transparent slabs are placed in front of each of the slits. At the centre of the screen, one may locate 1. Central maxima 2. First maxima 3. First minima 4. Neither of maxima or minima ...

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Is there any method to find time constant of L-C OR R-C etc circuits?????????????????? ...

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Q1. While gas from a cooking cylinder is used, pressure does not fall appreciably till the last few minutes. Why? Q2. When we place a gas cylinder on a van and the van moves, does the kinetic energy of the molecules increase? ...

hey guys can u help and tell how the differential equation has been solved here *Image* i mean can u say how they have eliminated time ? thanks [1] ...

Yesterday Philip was frustrated at the lack of gud problems...I am posting some for everyones practice..........2009 aspirants should solve them and put up solutions here for 2010 students to learn............. Some might be ...

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THIS QUESTION WAS SOLVED BY MY SIR LAST YEAR ,BUT STILL I AM NOT SATISFIED WITH THE SOLUTION I HOPE I WILL GET SOME AWESOME ANSWERS IN THIS FORUM *Image* a particle of mass m , charge q is released from -∞ along +ve x axis ...

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1) A wire of length 1m is moving at aspeed 2m/sec perpendicular to a magnetic field of induction of 0.5T.The ends of wires are formed by a circuit of total resistance 6ohm.What is the rate at which work is done to keep the wi ...

Velocity of a particle, which starts moving from origin in x-y plane is given by v=a i+bx j where a and b are positive constants. Path followed by the particle is a>st. line b>circle c>ellipse d>parabola ...

there is vacuum in space.Then from where does a spaceship get the thrust to move on? ...

The wavelengths of k_{\alpha } and k_{\gamma } X- Rays are \lambda _{1} and \lambda _{2 } respectively. The wavelength of L _{\beta } X- Rays is A) \frac{\lambda _{1 } + \lambda _{2}}{2} B) \frac{\mid \lambda _{1 } - \lambda ...

Light rays of wavelength 6000 A and of photon intensity 39.6 W/m2 is incident on a metal surface. If only 1% of the photons incident on surface emit photoelectrons, then the number of electrons emmited per second per unit are ...

A lens of focal length 15 cm is dipped in water. What is the new focal length given that ref index of glass wrt air is 3/2 and that of water wrt air is 4/3. If the lens is dipped in a liquid under what condition, the rays are ...

*Image* Magnetic field is inside the plane of paper and increasing with time. Four diiff. shaped conductors PQR are placed as shown. In which figure Potential at point P will be greater than potential at R? ...

Q1) a uniform meter scale of weight 50gram force is balanced at 40cm mark when a weight of 100 gram force is suspended at the 5cm mark were must the weight of 80 gram force be suspended to balance the meter scale. Q2) a unifo ...

there is a ellipse which is rotated about the axis to form an egg-like structure......a quarter of the egg is cut. We have to find out the centre of mass of the one-fourth egg...... ...

Q1. Two concentric shells of radius R and 2R, out of which the inner shell is having a charge Q and the outer shell is uncharged. If they are connected with a conducting wire, then (a) Q amount of charge will flow from inner ...

A particle is restricted to move on x-axis. The particle must be moving towards origin if, A) x\frac{dx}{dt}}<0 B) x\frac{d^{2}x}{dt^{2}}<0 C) (\frac{dx}{dt})(\frac{d^{2}x}{dt^{2}})<0 D) x^{2}\frac{dx}{dt}<0 ...

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A gas of temperature T is enclosed in a contained whose walls are (initially) at temperature T1. Does the gas exert a higher pressure on the walls of the container when T1<T or when T1>T? ...

the ratio of avrage translational KE to rotational KE of a linear polyatomic molecule at temprature T is 1. 3 2. 5 3. 1.5 4. 1.2 ...

Q1. The specific heat capacity of a monoatomic gas for the process TV2=constant is (where R is gas constant) (a) R/2 (b) 2R (c) R/3 (d) R/4 ...

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A point charge q is placed on one vertex of a cube. What part of the charge is inside the cube? Answer in 1/8th. Why?? ...