Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A neutron is scattered through ( deviation from its old direction) theta degree in an elastic collision with an initially stationary deutron. If the neutron loses 2/3 of its initial KE to the deutron
20
Oct
A neutron is scattered through ( deviation from its old direction) theta degree in an elastic collision with an initially stationary deutron. If the neutron loses 2/3 of its initial KE to the deutron A neutron is scattered through ( deviation from its old direction) theta degree in an elastic collision with an initially stationary [...]
A line charge λ per unit length is pasted uniformly on to the rim of a wheel of mass m and radius R. The wheel has light non-conducting spokes and is free to rotate about a vertical axis as shown in figure. A uniform magnetic field extends over a radial region of radius r given by B = −B 0 k ^ ( r≤a ; a<R ) = 0 (otherwise). What is the angular velocity of the wheel when this field is suddenly switched off ?
20
Oct
A line charge λ per unit length is pasted uniformly on to the rim of a wheel of mass m and radius R. The wheel has light non-conducting spokes and is free to rotate about a vertical axis as shown in figure. A uniform magnetic field extends over a radial region of radius r given [...]
A sample of 18F is used internally as a medical diagnostic tool to look for the effects of the positron decay (T1/2 = 110 min). How long (in hr) does it take for 99% of the 18F to decay?
20
Oct
A sample of 18F is used internally as a medical diagnostic tool to look for the effects of the positron decay (T1/2 = 110 min). How long (in hr) does it take for 99% of the 18F to decay? A sample of 18F is used internally as a medical diagnostic tool to look for the [...]
The magnetic flux density B is changing in magnitude at a constant rate dB/dt. A given mass m of copper, drawn into a wire of radius a and formed into a circular loop of radius r is placed perpendicular to the field B. The induced current in the loop is i. The resistivity of copper is ρ and density is d. The value of the induced current i is
20
Oct
The magnetic flux density B is changing in magnitude at a constant rate dB/dt. A given mass m of copper, drawn into a wire of radius a and formed into a circular loop of radius r is placed perpendicular to the field B. The induced current in the loop is i. The resistivity of copper [...]
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the current in wire AB is ( ab is one of the diameters ) ,
The magnetic flux density B is changing in magnitude at a constant rate dB/dt. A given mass m of copper ,
The radius of the circular conducting loop shown in figure is R. Magnetic field is decreasing at a constant rate alpha. Resistance per unit length of the loop is rho. Then ,
A rod of length `L` rotates in the form of a conical pendulum with an Angular velocity `omega ` about its axis as shown in Fig. 3.165. The rod makes an angle `theta` with the axis. The magnitude of the motional emf developed across the two emf of the rod is
20
Oct
A rod of length `L` rotates in the form of a conical pendulum with an Angular velocity `omega ` about its axis as shown in Fig. 3.165. The rod makes an angle `theta` with the axis. The magnitude of the motional emf developed across the two emf of the rod is the current in wire [...]
Nuclei X and Y convert into a stable nucleus Z. At t = 0 the number of nuclei of X is 8 times that of Y. Half life of X is 1 hour and half life of Y is 2 hour. Nucleus X is converted into Z by
20
Oct
Nuclei X and Y convert into a stable nucleus Z. At t = 0 the number of nuclei of X is 8 times that of Y. Half life of X is 1 hour and half life of Y is 2 hour. Nucleus X is converted into Z by Nuclei X and Y convert into a [...]
A radioactive sample S1 having an activity of 5 muCi has twice the number of nuclei as another sample S2 which has an activity of 10 muCi. Find the ratio of the half lives of S1 and S2.
20
Oct
A radioactive sample S1 having an activity of 5 muCi has twice the number of nuclei as another sample S2 which has an activity of 10 muCi. Find the ratio of the half lives of S1 and S2. A radioactive sample S1 having an activity of 5 muCi has twice the number of nuclei as [...]
Loop A of radius r << R moves toward loop B with a constant velocity V in such a way that their planes are always parallel. what is the the distance between the two loops ( x ) when the induced emf in loop A is maximum ?
20
Oct
Loop A of radius r << R moves toward loop B with a constant velocity V in such a way that their planes are always parallel. what is the the distance between the two loops ( x ) when the induced emf in loop A is maximum ? the current in wire AB is ( [...]
A freshly prepared radioactive sources of half-life 2 h emits radiation of intensity which is 64 times the permissible safe level. Find the minimum time (in hrs) after which it would
20
Oct
A freshly prepared radioactive sources of half-life 2 h emits radiation of intensity which is 64 times the permissible safe level. Find the minimum time (in hrs) after which it would A freshly prepared radioactive sources of half-life 2 h emits radiation of intensity which is 64 times the permissible safe level. Find the minimum [...]
A certain radioactive material can undergo three different types of decay, each with a different decay constant lemda, 2 lemda, and 3 lemda. Then, the effective decay constant lemda eff is
20
Oct
A certain radioactive material can undergo three different types of decay, each with a different decay constant lemda, 2 lemda, and 3 lemda. Then, the effective decay constant lemda eff is 2 lemda A certain radioactive material can undergo three different types of decay and 3 lemda. Then each with a different decay constant lemda [...]