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Two coherent sources emit light waves which superimpose at a point where these can be expressed as E1=E0sin(ωt+π/4) E2=2E0sin(ωt−π/4) Here, E1 and E2 are the electric field strengths of the two waves at the given point.
09
Sep
Two coherent sources emit light waves which superimpose at a point where these can be expressed as E1=E0sin(ωt+π/4) E2=2E0sin(ωt−π/4) Here, E1 and E2 are the electric field strengths of the two waves at the given point. E1 and E2 are the electric field strengths of the two waves at the given point. Two coherent sources [...]
A bullet of mass 20 g has an initial speed of 1 ms^−1, just before it starts penetrating a mud wall of thickness 20 cm. if the wall offers a mean resistance of 2.5 × 10^−2 N, the speed of the bullet after emerging from the other side of the wall is close to :
09
Sep
A bullet of mass 20 g has an initial speed of 1 ms^−1, just before it starts penetrating a mud wall of thickness 20 cm. if the wall offers a mean resistance of 2.5 × 10^−2 N, the speed of the bullet after emerging from the other side of the wall is close to : [...]
The graph gives the magnitude B(t) of a uniform magnetic field that exists throughout a conductig loop, perpendicular to the plane of the loop. Rank the five regions of the graph according to the magnitude fo the emf induced in the loop, greater first
09
Sep
The graph gives the magnitude B(t) of a uniform magnetic field that exists throughout a conductig loop, perpendicular to the plane of the loop. Rank the five regions of the graph according to the magnitude fo the emf induced in the loop, greater first greater first perpendicular to the plane of the loop. Rank the [...]
In Young’s experiment, the interfering waves have amplitudes in the ratio 3:2. Find the ratio of amplitudes and intensities, between the bright and dark fringes.
09
Sep
In Young’s experiment, the interfering waves have amplitudes in the ratio 3:2. Find the ratio of amplitudes and intensities, between the bright and dark fringes. between the bright and dark fringes. In Young's experiment the interfering waves have amplitudes in the ratio 3:2. Find the ratio of amplitudes and intensities September 9, 2020 Category: Uncategorised [...]
Two ciircle coils A and B are facing each other as shown in figure. Then current i through A can be altered
09
Sep
Two ciircle coils A and B are facing each other as shown in figure. Then current i through A can be altered Two ciircle coils A and B are facing each other as shown in figure. Then current i through A can be altered September 9, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
A ball is thrown upward with an initial velocity V0 from the surface of the earth. The motion of the ball is affected by a drag force equal to mγv2 (where m is mass of the ball, v is its instantaneous velocity and γ is a constant). Time taken by the ball to rise to its zenith is:
09
Sep
A ball is thrown upward with an initial velocity V0 from the surface of the earth. The motion of the ball is affected by a drag force equal to mγv2 (where m is mass of the ball, v is its instantaneous velocity and γ is a constant). Time taken by the ball to rise to [...]
Light waves from two coherent sources superimose at a point. The waves, at this point, can be expressed as y1 = a sin (10^15 pie t) and y2 = 2a sin (10^15 pie t + phi). Find the resultant amplitude if phase difference phi is
09
Sep
Light waves from two coherent sources superimose at a point. The waves, at this point, can be expressed as y1 = a sin (10^15 pie t) and y2 = 2a sin (10^15 pie t + phi). Find the resultant amplitude if phase difference phi is at this point can be expressed as y1 = a [...]
A horizontal loop abcd is moved across the pole pieces of a magnet as shown in fig. with a constant speed v. When the edge ab of the loop enters the pole pieces at time t=0 sec. which one of the following graphs represents correctly the induced e.m.f. in the coil?
09
Sep
A horizontal loop abcd is moved across the pole pieces of a magnet as shown in fig. with a constant speed v. When the edge ab of the loop enters the pole pieces at time t=0 sec. which one of the following graphs represents correctly the induced e.m.f. in the coil? The graph Shows the [...]
Consider a point at the focal point of a convergent lens. Another convergent lens of short focal length is placed on the other side. what is the nature of the wavefronts emerging from the final image?
09
Sep
Consider a point at the focal point of a convergent lens. Another convergent lens of short focal length is placed on the other side. what is the nature of the wavefronts emerging from the final image? Consider a point at the focal point of a convergent lens. Another convergent lens of short focal length is [...]
The position of a particle as a function of time t, is given by x(t) = at + bt^2 − ct^3 where a, b and c are constants. When the particle attains zero acceleration, then its velocity will be
09
Sep
The position of a particle as a function of time t, is given by x(t) = at + bt^2 − ct^3 where a, b and c are constants. When the particle attains zero acceleration, then its velocity will be b and c are constants. When the particle attains zero acceleration is given by x(t) = [...]