Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
Point I is the image of a point source of light O in a spherical mirror whose optical axis is X1X2 (shown in figure). Find by construction the position of the centre of the mirror and its focus.
08
Sep
Point I is the image of a point source of light O in a spherical mirror whose optical axis is X1X2 (shown in figure). Find by construction the position of the centre of the mirror and its focus. Point I is the image of a point source of light O in a spherical mirror whose [...]
A metal bar AB can slide on two parallel thick metallic rails separated by a distance l. A resistance R and an inductance L are connected to the rails as shown in the figure. A long straight wire carrying a constant current I0 is placed in the plane of the rails and perpendicular to them as shown. The bar AB is held at rest at a distance x0 from the long wire. At t=0, it is made to slide on the rails away from wire. Answer the following questions. (a) Find a relation among i,didtanddϕdt, where i is the current in the circuit and ϕ is the flux of the megnetic field due to the long wire through the circuit. (b) It is observed that at time t=T, the metal bar AB si at a distance of 2×0 from the long wire and the resistance R carries a current (i1). Obtain an expression for the net charge that has flown through riesistance R form t=0 to t=T. (c) THe bar is suddenly stopped at time T. THe current through resistance R is found to be i14 at time 2T. Find the value of LR in terms of hte other given quantities.
08
Sep
A metal bar AB can slide on two parallel thick metallic rails separated by a distance l. A resistance R and an inductance L are connected to the rails as shown in the figure. A long straight wire carrying a constant current I0 is placed in the plane of the rails and perpendicular to them [...]
Tags:
a or b ,
c or d ,
E = 120 V ,
In the circuit shown in fig ,
In the circuit shown in Figure ,
Initially the 900μF capacitor is charged to 100 V and the 100μF capacitor is uncharged in Fig. Then switch S2 is closed for time t1 ,
is at higher potential? (c) What is the potential difference Vcd across the inductor L? (d) Which point ,
is at steady state. if R1 = R2= R3 =R and the current through each resistor is i. Find the currents through the resistors immediately after the switch S is opened. ,
R1 = 30.0 Ω ,
R2 =50.0Ω and L = 0.200 H. Switch S is closed at t=0. Just after the switch is closed.(a) What is the potential difference Vab across the inductor R1? (b) Which point ,
A metal wire ABC of length 3 cm is placed in front of a concave mirror of focal length 20 cm as shown in figure. If AB = 1 cm and BC = 2 cm, then find the coordinates image of point A and C of the wire.
08
Sep
A metal wire ABC of length 3 cm is placed in front of a concave mirror of focal length 20 cm as shown in figure. If AB = 1 cm and BC = 2 cm, then find the coordinates image of point A and C of the wire. A metal wire ABC of length 3 [...]
In the circuit shown in the figure a capacitor C1 is used to transfere energy to other capacitor C2. Initially capacitor of capacitance C1 =Co is charged to a potential difference of V o. switch S1 is closed simultaneously. At time t = T, S2 was opensd and itr was found that potential difference across capacitor of capacitance .
08
Sep
In the circuit shown in the figure a capacitor C1 is used to transfere energy to other capacitor C2. Initially capacitor of capacitance C1 =Co is charged to a potential difference of V o. switch S1 is closed simultaneously. At time t = T, S2 was opensd and itr was found that potential difference across [...]
Tags:
a or b ,
c or d ,
E = 120 V ,
In the circuit shown in fig ,
In the circuit shown in Figure ,
Initially the 900μF capacitor is charged to 100 V and the 100μF capacitor is uncharged in Fig. Then switch S2 is closed for time t1 ,
is at higher potential? (c) What is the potential difference Vcd across the inductor L? (d) Which point ,
is at steady state. if R1 = R2= R3 =R and the current through each resistor is i. Find the currents through the resistors immediately after the switch S is opened. ,
R1 = 30.0 Ω ,
R2 =50.0Ω and L = 0.200 H. Switch S is closed at t=0. Just after the switch is closed.(a) What is the potential difference Vab across the inductor R1? (b) Which point ,
An inductor of inductance 2.0mH is connected across a charged capacitor of capacitance 5.0μF and the resulting L−C circuit is set oscillating at its natural frequency. Let Q denote the instantaneous change on the capacitor and i the current in the circuit. It is found that the maximum value of Q is 200μC . (a) When Q=100μC , what is the value of |di/dt| ? (b) When Q=200μC , what is the value of i ? (c)Find the maximum value of i (d) When i is equal to one-half its maximum value, what is the value of |Q| ?
08
Sep
An inductor of inductance 2.0mH is connected across a charged capacitor of capacitance 5.0μF and the resulting L−C circuit is set oscillating at its natural frequency. Let Q denote the instantaneous change on the capacitor and i the current in the circuit. It is found that the maximum value of Q is 200μC . (a) [...]
Tags:
a or b ,
c or d ,
E = 120 V ,
In the circuit shown in fig ,
In the circuit shown in Figure ,
Initially the 900μF capacitor is charged to 100 V and the 100μF capacitor is uncharged in Fig. Then switch S2 is closed for time t1 ,
is at higher potential? (c) What is the potential difference Vcd across the inductor L? (d) Which point ,
is at steady state. if R1 = R2= R3 =R and the current through each resistor is i. Find the currents through the resistors immediately after the switch S is opened. ,
R1 = 30.0 Ω ,
R2 =50.0Ω and L = 0.200 H. Switch S is closed at t=0. Just after the switch is closed.(a) What is the potential difference Vab across the inductor R1? (b) Which point ,
A U-shaped wire is placed before a concave mirror having radius of curvature 20 cm as shown in figure. Find the total length of the image.
08
Sep
A U-shaped wire is placed before a concave mirror having radius of curvature 20 cm as shown in figure. Find the total length of the image. A U-shaped wire is placed before a concave mirror having radius of curvature 20 cm as shown in figure. Find the total length of the image. September 8, 2020 [...]
In the circuit shown in figure, the battery has negligible internal resistance. Show that the current in the circuit through the battery rise instantly to its steady state value E/R when the switch is closed, provided that resistance R is root L/C.
08
Sep
In the circuit shown in figure, the battery has negligible internal resistance. Show that the current in the circuit through the battery rise instantly to its steady state value E/R when the switch is closed, provided that resistance R is root L/C. In the circuit shown in Figure provided that resistance R is root L/C. [...]
A metal wire AB of length 10 cm is placed in front of a concave mirror of focal length 15 cm as shown in figure. Find the length of the wire.
08
Sep
A metal wire AB of length 10 cm is placed in front of a concave mirror of focal length 15 cm as shown in figure. Find the length of the wire. A metal wire AB of length 10 cm is placed in front of a concave mirror of focal length 15 cm as shown in [...]
A thin rod of length f/3 is placed along the optical axis of a concave mirror of focal length f such that its image which is real and elongated just touches the rod. Calculate the magnification.
08
Sep
A thin rod of length f/3 is placed along the optical axis of a concave mirror of focal length f such that its image which is real and elongated just touches the rod. Calculate the magnification. A thin rod of length f/3 is placed along the optical axis of a concave mirror of focal length [...]
The distance between a real object and its image in a convex mirror of focal length 12 cm is 32 cm. Find the size of image if the object size is 1 cm.
08
Sep
The distance between a real object and its image in a convex mirror of focal length 12 cm is 32 cm. Find the size of image if the object size is 1 cm. The distance between a real object and its image in a convex mirror of focal length 12 cm is 32 cm. Find [...]