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A winding wire which is used to frame a solenoid can bear a maximum 10 A. current If length of solenoid is 80 cm and its cross sectional radius is 3 cm , then required length of winding wire is (B =0.2T)
09
Sep
A winding wire which is used to frame a solenoid can bear a maximum 10 A. current If length of solenoid is 80 cm and its cross sectional radius is 3 cm , then required length of winding wire is (B =0.2T) A winding wire which is used to frame a solenoid can bear a [...]
The force required to just move a body up the inclined plane is double the force required to just prevent the body from sliding down the plane. The coefficient of friction is 0.25. The angle of inclination of the plane is:
09
Sep
The force required to just move a body up the inclined plane is double the force required to just prevent the body from sliding down the plane. The coefficient of friction is 0.25. The angle of inclination of the plane is: The acceleration of the block is 1) 6 m/s^2 2) 8 m/s^2 3) 10 [...]
A person with a normal near point (25 cm) using a compound microscope with an objective of focal length 8.0 mm and an eyepiece of focal length 2.5 cm can bring an object placed 9.0 mm from the objective
09
Sep
A person with a normal near point (25 cm) using a compound microscope with an objective of focal length 8.0 mm and an eyepiece of focal length 2.5 cm can bring an object placed 9.0 mm from the objective (a) A screen is placed 90 cm from an object. The image of the object on [...]
From a cylinder of radius R, a cylinder of radius R/2 is removed, as shown current flowing in the remaining cylinder is I. Magnetic field strength is
09
Sep
From a cylinder of radius R, a cylinder of radius R/2 is removed, as shown current flowing in the remaining cylinder is I. Magnetic field strength is a cylinder of radius R/2 is removed as shown current flowing in the remaining cylinder is I. Magnetic field strength is From a cylinder of radius R September [...]
A compound microscope consists of an objective lens of focal length 2.0 cm and an eyepiece of focal length 6.25 cm separated by a distance of 15 cm. How far from the objective should an object be placed in order
09
Sep
A compound microscope consists of an objective lens of focal length 2.0 cm and an eyepiece of focal length 6.25 cm separated by a distance of 15 cm. How far from the objective should an object be placed in order (a) A screen is placed 90 cm from an object. The image of the object [...]
Two blocks A and B each of mass 10 kg are connected by a light string passing over a smooth pulley as shown in the figure. Block A will remain at rest if the friction on it is
09
Sep
Two blocks A and B each of mass 10 kg are connected by a light string passing over a smooth pulley as shown in the figure. Block A will remain at rest if the friction on it is Two blocks A and B each of mass 10 kg are connected by a light string passing [...]
A current i ampere flows along the inner conductor of a coaxial cable and returns along the outer conductor fo the cable, then the magnetic induction at any point outside the conductor at a distance r metre from the axis is
09
Sep
A current i ampere flows along the inner conductor of a coaxial cable and returns along the outer conductor fo the cable, then the magnetic induction at any point outside the conductor at a distance r metre from the axis is A current i ampere flows along the inner conductor of a coaxial cable and [...]
A coaxial cable made up of two conductors. The inner conductor is solid and is of radius R1 and the outer conductor is hollow of inner radius R2 and outer radius R3. The space between the conductors is filled with air. The inner and outer conductors are carrying currents of equal magnitudes and in opposite directions. Then the variation of magnetic field with distance from the axis is best plotted as
09
Sep
A coaxial cable made up of two conductors. The inner conductor is solid and is of radius R1 and the outer conductor is hollow of inner radius R2 and outer radius R3. The space between the conductors is filled with air. The inner and outer conductors are carrying currents of equal magnitudes and in opposite [...]
A 10 kg block is initially at rest on a rough horizontal surface. A horizontal force of 60 N is required to set the block in motion. After it is in motion , a horizontal force of 50 N is required to keep the block moving with constant velocity . The ratio coefficient of static and kinetic friction is
09
Sep
A 10 kg block is initially at rest on a rough horizontal surface. A horizontal force of 60 N is required to set the block in motion. After it is in motion , a horizontal force of 50 N is required to keep the block moving with constant velocity . The ratio coefficient of static [...]
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A 10 kg block is initially at rest on a rough horizontal surface. A horizontal force of 60 N is required to set the block in motion. After it is in motion ,
a horizontal force of 50 N is required to keep the block moving with constant velocity . The ratio coefficient of static and kinetic friction is ,
Figure shows the cross sectional view of the hallow cylindrical conductor with inner radius R and outer radius 2R. cylinder carrying uniformly distributed current along its axis. The magnetic induction at point P at a distance 3R/2 from the axis of the cylinder will be
09
Sep
Figure shows the cross sectional view of the hallow cylindrical conductor with inner radius R and outer radius 2R. cylinder carrying uniformly distributed current along its axis. The magnetic induction at point P at a distance 3R/2 from the axis of the cylinder will be A long thin hallow metallic cylinder of radius R has [...]