Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)

A telescope has an objective of focal length 50 cm and eye piece of focal length 5 cm. The least distance of distinct vision is 25 cm. The telescope is focused for distinct vision on a scale 200 cm away (a) A screen is placed 90 cm from an object. The image of the object [...]

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 [...]

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 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 (a) A screen is placed 90 cm from an object. The image of the object [...]

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 [...]

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 [...]

A compound microscope uses an objective lens of focal length 4 cm and eye lens of focal length 10 cm. An object is placed 6 cm from the objective lens. (a) Calculate the magnifying power of the compound (a) A screen is placed 90 cm from an object. The image of the object on the [...]

The focal length of the eye-piece and objective of a compound microscope are 5 cm and 1 cm respectively and the length of the tube is 20 cm. Calculate the magnifying power of the microscope, The focal length of the eye-piece and objective of a compound microscope are 5 cm and 1 cm respectively and [...]