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A toy gun a spring of force constant k. When changed before being triggered in the upward direction, the spring is compressed by a distance x. If the mass of the shot is m, on the being triggered it will go up to a height of
20
Oct
A toy gun a spring of force constant k. When changed before being triggered in the upward direction, the spring is compressed by a distance x. If the mass of the shot is m, on the being triggered it will go up to a height of A toy gun a spring of force constant k. [...]
An object of mass m slides down a hill of arbitrary shape and after travelling a certain horizontal path stops because of friction. The total vertical height descended is h. The friction coefficient is different for different segments for the entire path but is independent of the velocity and direction of motion. The work that a tangential force must perform to return the object to its initial position along the same path is
20
Oct
An object of mass m slides down a hill of arbitrary shape and after travelling a certain horizontal path stops because of friction. The total vertical height descended is h. The friction coefficient is different for different segments for the entire path but is independent of the velocity and direction of motion. The work that [...]
Hydrogen (1H1), Deuterium (1H2), singly ionised Helium (2He4) and doubly ionised lithium (3Li6)++ all have one electron around the nucleus. Consider an electron transition from n = 2 to n = 1.
20
Oct
Hydrogen (1H1), Deuterium (1H2), singly ionised Helium (2He4) and doubly ionised lithium (3Li6)++ all have one electron around the nucleus. Consider an electron transition from n = 2 to n = 1. Deuterium (1H2) Hydrogen (1H1) singly ionised Helium (2He4) and doubly ionised lithium (3Li6)++ all have one electron around the nucleus. Consider an electron [...]
Assume that a neutron breaks into a proton and an electron. The energy released during this process is: (mass of neutron = 1.6725 *10^-27 kg, mass of proton = 1.6725 * 10^-27 kg,
20
Oct
Assume that a neutron breaks into a proton and an electron. The energy released during this process is: (mass of neutron = 1.6725 *10^-27 kg, mass of proton = 1.6725 * 10^-27 kg, Assume that a neutron breaks into a proton and an electron. The energy released during this process is: (mass of neutron = [...]
The half-life of a radioactive substance is 20 minutes. The approximate time interval (t2 – t1) between the time t2 when 2/3 of it has decayed and time t1 when 1/3 of it had decayed is
20
Oct
The half-life of a radioactive substance is 20 minutes. The approximate time interval (t2 – t1) between the time t2 when 2/3 of it has decayed and time t1 when 1/3 of it had decayed is The half-life of a radioactive substance is 20 minutes. The approximate time interval (t2 - t1) between the time [...]
A radioactive nucleus (initial mass number A and atomic number Z) emits three alpha particles and two positrons. The ratio of the number of neutrons to that of protons in the final nucleus
20
Oct
A radioactive nucleus (initial mass number A and atomic number Z) emits three alpha particles and two positrons. The ratio of the number of neutrons to that of protons in the final nucleus A radioactive nucleus (initial mass number A and atomic number Z) emits three alpha particles and two positrons. The ratio of the [...]
These questions are based on the following paragraph. A nucleus of mass M+ delta m is at rest and decays into two daughter nuclei of equal masses M/2 each. The speed of light is c.
20
Oct
These questions are based on the following paragraph. A nucleus of mass M+ delta m is at rest and decays into two daughter nuclei of equal masses M/2 each. The speed of light is c. These questions are based on the following paragraph. A nucleus of mass M+ delta m is at rest and decays [...]
A triangular wire frame (each side = 2 m) is placed in a region of time variant magnetic field dB/dt = ( root 3 )T/s. The magnetic field is perpendicular to the plane of the triangle and its centre coincides with the centre of triangle. The base of the triangle AB has a resistance 1(Ω) while the other two sides have resistance 2(Ω) each. The magnitude of potential difference between the points A and B will be
20
Oct
A triangular wire frame (each side = 2 m) is placed in a region of time variant magnetic field dB/dt = ( root 3 )T/s. The magnetic field is perpendicular to the plane of the triangle and its centre coincides with the centre of triangle. The base of the triangle AB has a resistance 1(Ω) [...]
In Fig (a) and (b), two air-cored solenoids P and Q have been shows. They are placed near each other. In Fig (a), when IP, the current in P, changes at the rate of 5 A/s, an emf of 2 mV is induced in Q. The current in P is then switched off, and the current changing at 2 A/sis fed through Q as shows in the figure. What emf will be induced in P?
20
Oct
In Fig (a) and (b), two air-cored solenoids P and Q have been shows. They are placed near each other. In Fig (a), when IP, the current in P, changes at the rate of 5 A/s, an emf of 2 mV is induced in Q. The current in P is then switched off, and the [...]
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an emf of 2 mV is induced in Q. The current in P is then switched off ,
and the current changing at 2 A/sis fed through Q as shows in the figure. What emf will be induced in P? ,
changes at the rate of 5 A/s ,
In Fig (a) and (b) ,
the current in P ,
two air-cored solenoids P and Q have been shows. They are placed near each other. In Fig (a) ,
when IP ,
A small square loop of edge a and resistance R is moved with velocity v0 away from an infinitely long current carrying conductor carrying current I so that the conductor and side of square are always in same plane. Find induced current in loop at a separation of r
20
Oct
A small square loop of edge a and resistance R is moved with velocity v0 away from an infinitely long current carrying conductor carrying current I so that the conductor and side of square are always in same plane. Find induced current in loop at a separation of r the current in wire AB is [...]