Question Answers
Sahay Sir > Question Answers
The molecules of a given mass of a gas having r.m.s velocity of 100m/s at 27C and 1.0 atmospheric pressure What will be the root mean square speeds of the molecules of the gas at 127C and 2 atmospheric pressure?
02
Sep
The molecules of a given mass of a gas having r.m.s velocity of 100m/s at 27C and 1.0 atmospheric pressure What will be the root mean square speeds of the molecules of the gas at 127C and 2 atmospheric pressure? Two molecules of gas have speeds of 9×10^6m/s and 1×10^6m/s respectively. What is the root [...]
The voltage-current graphs for two resistor of the same material and the same radius with lengths, L1 and L2 are shown in fig 5.2. if L1>L2, state with reason which of these graphs represents voltage- current change of L1.
02
Sep
The voltage-current graphs for two resistor of the same material and the same radius with lengths, L1 and L2 are shown in fig 5.2. if L1>L2, state with reason which of these graphs represents voltage- current change of L1. L1 and L2 are shown in fig 5.2. if L1>L2 state with reason which of these [...]
Two molecules of gas have speeds of 9×10^6m/s and 1×10^6m/s respectively. What is the root mean square speed of these molecules?
02
Sep
Two molecules of gas have speeds of 9×10^6m/s and 1×10^6m/s respectively. What is the root mean square speed of these molecules? Two molecules of gas have speeds of 9×10^6m/s and 1×10^6m/s respectively. What is the root mean square speed of these molecules? September 2, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]
The wire is stretched t increase the length by 1%. Find the percentage change in the resistance.
02
Sep
The wire is stretched t increase the length by 1%. Find the percentage change in the resistance. The wire is stretched t increase the length by 1%. Find the percentage change in the resistance. September 2, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
If a wire is stretched to double its length, find the new resistance if the original resistance of the wire was R.
02
Sep
If a wire is stretched to double its length, find the new resistance if the original resistance of the wire was R. find the new resistance if the original resistance of the wire was R. If a wire is stretched to double its length September 2, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma [...]
In a period of 1.00 , 5×10^23 nitrogen molecules strike a wall with an area of 8.00cm^2. Assume the molecules move with a speed of 300m/s and strike the wall head-on in elastic collisions. What is the pressure exerted on the
02
Sep
In a period of 1.00 , 5×10^23 nitrogen molecules strike a wall with an area of 8.00cm^2. Assume the molecules move with a speed of 300m/s and strike the wall head-on in elastic collisions. What is the pressure exerted on the Calculate the number of atoms in 39.4 g gold. Molar mass of gold is [...]
The arrangement of parallel conducting plates shown in are of the same surface area A=10cm2. A battery of E=10V is connected across the kends A and B. Plate 2 is slowly moved upward by some external force. find the position of plate at which the energy stored in the system is minimum. Also, find this minimum energy Take `epsilon_(0) = 8.8 xx10^(-12)Fm^(-1).
02
Sep
The arrangement of parallel conducting plates shown in are of the same surface area A=10cm2. A battery of E=10V is connected across the kends A and B. Plate 2 is slowly moved upward by some external force. find the position of plate at which the energy stored in the system is minimum. Also, find this [...]
Calculate the number of atoms in 39.4 g gold. Molar mass of gold is 197 g mole^-1
02
Sep
Calculate the number of atoms in 39.4 g gold. Molar mass of gold is 197 g mole^-1 Calculate the number of atoms in 39.4 g gold. Molar mass of gold is 197 g mole^-1 September 2, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
One end of rod of length L and cross-sectional area A is kept in a funrance of temperature T1. The other end of the rod is kept at at temperature T2. The thermal conductivity of the material of the rod is K and emissivity of the rod is e. It is given that T2 = TS+ΔT where ΔT<<TS, TS being the temperature of the surroundings.
02
Sep
One end of rod of length L and cross-sectional area A is kept in a funrance of temperature T1. The other end of the rod is kept at at temperature T2. The thermal conductivity of the material of the rod is K and emissivity of the rod is e. It is given that T2 = [...]
Tags:
A body cools in a cold surrounding obeying Newton's law of cooling. It is found that from t = 0 to t = t1 ,
A cylindrical rod of heat capacity 120J/K in a room temperature 27C is heated internally by heater of power 250W ,
from t = t1 will it loose one fourth the total heat? ,
it loses half the total heat. In what time ,
A capacitor of capacitance Co is charged to a potential difference V0. The charged battery is disconnected and the capacitor is connected to a capacitor of unknown capacitance Cx. The potential difference across the combination is V. The value of Cx should be
02
Sep
A capacitor of capacitance Co is charged to a potential difference V0. The charged battery is disconnected and the capacitor is connected to a capacitor of unknown capacitance Cx. The potential difference across the combination is V. The value of Cx should be q2 and q3 on the capacitors? the plates of capacitor 1 acquire [...]