Practice Set 1
Using screw gauge of pitch 0.1 cm and 50 divisions on its circular scale, the thickness of an object is measured. It should correctly be recorded as
18
Sep
Using screw gauge of pitch 0.1 cm and 50 divisions on its circular scale, the thickness of an object is measured. It should correctly be recorded as the thickness of an object is measured. It should correctly be recorded as Using screw gauge of pitch 0.1 cm and 50 divisions on its circular scale September [...]
In a Young’s double slit experiment, light of 500 nm is used to produce an interference pattern. When the distance between the slits is 0.05 mm, the angular width (in degree) of the fringes formed on the distance screen is close to
18
Sep
In a Young’s double slit experiment, light of 500 nm is used to produce an interference pattern. When the distance between the slits is 0.05 mm, the angular width (in degree) of the fringes formed on the distance screen is close to In a Young's double slit experiment light of 500 nm is used to [...]
In the circuit shown in the figure, the total charge is 750 μC and the voltage across capacitor C2 is 20 V. Then the charge on capacitor C2 is
18
Sep
In the circuit shown in the figure, the total charge is 750 μC and the voltage across capacitor C2 is 20 V. Then the charge on capacitor C2 is In the circuit shown in the figure: the total charge is 750 μC and the voltage across capacitor C2 is 20 V. Then the charge on [...]
A charged particle carrying charge 1μC is moving with velocity (2 i^ + 3 j^ + 4 k^) ms-1 . if an external magnetic filed of (5 i^ + 3 j^ – 6 k^) x 10^-3 T exists in the region where the particle is moving then the force on the particle is F x 10^-9 . The vector F is
18
Sep
A charged particle carrying charge 1μC is moving with velocity (2 i^ + 3 j^ + 4 k^) ms-1 . if an external magnetic filed of (5 i^ + 3 j^ – 6 k^) x 10^-3 T exists in the region where the particle is moving then the force on the particle is F x [...]
A 750 Hz, 20 V (rms) source is connected to a resistance of 100 Ω , an inductance of 0.1803 H and a capacitance of 10 μF all in series. The time in which the resistance (heat capacity 2 J/°C) will get heated by 10°C. is close to
18
Sep
A 750 Hz, 20 V (rms) source is connected to a resistance of 100 Ω , an inductance of 0.1803 H and a capacitance of 10 μF all in series. The time in which the resistance (heat capacity 2 J/°C) will get heated by 10°C. is close to 20 V (rms) source is connected to [...]
The magnetic field of a plane electromagnetic wave is B = 3 x 10^-8 Sin[200π(y + ct)] ^ i i^T where c = 3 × 10^8 ms^–1 is the speed of light. The corresponding electric field is
18
Sep
The magnetic field of a plane electromagnetic wave is B = 3 x 10^-8 Sin[200π(y + ct)] ^ i i^T where c = 3 × 10^8 ms^–1 is the speed of light. The corresponding electric field is The magnetic field of a plane electromagnetic wave is B = 3 x 10^-8 Sin[200π(y + ct)] ^ [...]
A balloon filled with helium (32°C and 1.7 atm.) bursts. Immediately afterwards the expansion of helium can be considered as
18
Sep
A balloon filled with helium (32°C and 1.7 atm.) bursts. Immediately afterwards the expansion of helium can be considered as A balloon filled with helium (32°C and 1.7 atm.) bursts. Immediately afterwards the expansion of helium can be considered as September 18, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 [...]
A torch battery of length l to be made up of a thin cylindrical bar of radius ‘a’ and a concentric thin cylindrical shell of radius ‘b’ filled in between with an electrolyte of resistivity ρ (see figure). If the battery is connected to a resistance of value R, the maximum Joule heating in R will take place for
18
Sep
A torch battery of length l to be made up of a thin cylindrical bar of radius ‘a’ and a concentric thin cylindrical shell of radius ‘b’ filled in between with an electrolyte of resistivity ρ (see figure). If the battery is connected to a resistance of value R, the maximum Joule heating in R [...]
Magnitude of magnetic field (in SI units) at the centre of a hexagonal shape coil of side 10 cm, 50 turns and carrying current I (Ampere) in units of μ0I / π is
18
Sep
Magnitude of magnetic field (in SI units) at the centre of a hexagonal shape coil of side 10 cm, 50 turns and carrying current I (Ampere) in units of μ0I / π is 50 turns and carrying current I (Ampere) in units of μ0I / π is Magnitude of magnetic field (in SI units) at [...]
Moment of inertia of a cylinder of mass M, length L and radius R about an axis passing through its centre and perpendicular to the axis of the cylinder is I = M ( R^2/4 + L^2/12 ). If such a cylinder is to be made for a given mass of a material, the ratio L/R for it to have minimum possible I is
18
Sep
Moment of inertia of a cylinder of mass M, length L and radius R about an axis passing through its centre and perpendicular to the axis of the cylinder is I = M ( R^2/4 + L^2/12 ). If such a cylinder is to be made for a given mass of a material, the ratio [...]