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A car is moving with a velocity of 5m/s towards huge wall. The driver sounds a horn of frequency 165Hz. If the speed of sound in air is 335m/s, the number of beats heard per second by the driver is
31
Oct
A car is moving with a velocity of 5m/s towards huge wall. The driver sounds a horn of frequency 165Hz. If the speed of sound in air is 335m/s, the number of beats heard per second by the driver is A car is moving with a velocity of 5m/s towards huge wall. The driver sounds [...]
An ideal gas enclosed in a vertical cylinderical container supports a freely moving piston of mass M. The piston and cylinder have equal cross sectional area A. When the piston
31
Oct
An ideal gas enclosed in a vertical cylinderical container supports a freely moving piston of mass M. The piston and cylinder have equal cross sectional area A. When the piston An ideal gas enclosed in a vertical cylinderical container supports a freely moving piston of mass M. The piston and cylinder have equal cross sectional [...]
A cavity of radius r is made inside a solid sphere. The volume charge density of the remaining sphere is ρ. An electron (charge e, mass m) is released inside the cavity from point P as shown in figure. The centre of sphere and centre of cavity are separated by a distance a. The time after which the electron again touches the sphere is
31
Oct
A cavity of radius r is made inside a solid sphere. The volume charge density of the remaining sphere is ρ. An electron (charge e, mass m) is released inside the cavity from point P as shown in figure. The centre of sphere and centre of cavity are separated by a distance a. The time [...]
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A cavity of radius r is made inside a solid sphere. The volume charge density of the remaining sphere is ρ. An electron (charge e ,
are separated by a distance d. Now ,
each of area A ,
the left plate is given a positive charge Q. A positive charge q of mass m is released from a point near the left plate. Find the time taken by the charge to reach the right plate. ,
Two parallel conducting plates ,
Two particles are executing simple harmonic motion of the sample amplitude A and frequency omega along the x-axis. Their mean position is separated by distance X0 (X0 > A). If the
31
Oct
Two particles are executing simple harmonic motion of the sample amplitude A and frequency omega along the x-axis. Their mean position is separated by distance X0 (X0 > A). If the Two particles are executing simple harmonic motion of the sample amplitude A and frequency omega along the x-axis. Their mean position is separated by [...]
A man is standing on a railway platform listening to the whistle of an engine that passes the man at constant speed without stopping. If the engine passes the man at time t0 How does the frequency f of the whistle as heard by the man changes with time.
31
Oct
A man is standing on a railway platform listening to the whistle of an engine that passes the man at constant speed without stopping. If the engine passes the man at time t0 How does the frequency f of the whistle as heard by the man changes with time. An engine is moving on a [...]
A mass M, attached to a horizontal spring, executes SHM with a amplitude A1. When the mass M passes through its mean position then a smaller mass m is placed over it and both
31
Oct
A mass M, attached to a horizontal spring, executes SHM with a amplitude A1. When the mass M passes through its mean position then a smaller mass m is placed over it and both A mass M attached to a horizontal spring executes SHM with a amplitude A1. When the mass M passes through its [...]
An infinite nonconducting sheet has surface charge density s. There is a small hole in the sheet as shown in the figure. A uniform rod of length l having linear charge density λ is hinged in the hole as shown. If the mass of the rod is m, then the time period of oscillation for small angular displacement is
31
Oct
An infinite nonconducting sheet has surface charge density s. There is a small hole in the sheet as shown in the figure. A uniform rod of length l having linear charge density λ is hinged in the hole as shown. If the mass of the rod is m, then the time period of oscillation for [...]
A charge Q is uniformly distributed in a dielectric sphere of radius R (having dielectric constant unity). This dielectric sphere is enclosed by a concentric spherical shell of radius 2R and having uniformly distributed charge 2Q. Which of the following graph correctly represents variation of electric field with distance r from the common centre?
31
Oct
A charge Q is uniformly distributed in a dielectric sphere of radius R (having dielectric constant unity). This dielectric sphere is enclosed by a concentric spherical shell of radius 2R and having uniformly distributed charge 2Q. Which of the following graph correctly represents variation of electric field with distance r from the common centre? are [...]
A train has just completed a U-curve in a track which is a semicircle. The engine is at the forward end of the semi-circular part of the track while the last carriage is at the rear end of the semi-circular track. The driver blows a whistle of frequency 200 Hz. Velocity of sound is 340 m/sec. Then the apparent frequency as observed by a passenger in the middle of a train when the speed of the train is 30 m/sec is
31
Oct
A train has just completed a U-curve in a track which is a semicircle. The engine is at the forward end of the semi-circular part of the track while the last carriage is at the rear end of the semi-circular track. The driver blows a whistle of frequency 200 Hz. Velocity of sound is 340 [...]
Two mutually perpendicular wire carry charges densities lamda 1 and lamda 2. The electric lines of force makes angle alpha with second wire, then lamda1/ lamda2 is
31
Oct
Two mutually perpendicular wire carry charges densities lamda 1 and lamda 2. The electric lines of force makes angle alpha with second wire, then lamda1/ lamda2 is then lamda1/ lamda2 is Two mutually perpendicular wire carry charges densities lamda 1 and lamda 2. The electric lines of force makes angle alpha with second wire October [...]