JEE Mains Physics 2002-2019 Solved Video Solutions
A bar magnet of length 14 cm is placed in the magnetic meridian with its north pole pointing towards the geographic north pole. A neutral point is obtained at a distance of 18 cm from the center of the magnet. If BH = 0.4 G, the magnetic moment of the magnet is (1 G = 10^–4T)
28
Sep
A bar magnet of length 14 cm is placed in the magnetic meridian with its north pole pointing towards the geographic north pole. A neutral point is obtained at a distance of 18 cm from the center of the magnet. If BH = 0.4 G, the magnetic moment of the magnet is (1 G = [...]
The maximum and minimum distance of a comet from the sun are 1.6 × 10^12 m and 8 × 10^12 m. If its speed of the comet at the nearest point is 6 x 10^4 ms^–1, the speed at the farthest point is :
28
Sep
The maximum and minimum distance of a comet from the sun are 1.6 × 10^12 m and 8 × 10^12 m. If its speed of the comet at the nearest point is 6 x 10^4 ms^–1, the speed at the farthest point is : The maximum and minimum distance of a comet from the sun [...]
A plane electromagnetic wave of frequency 500 MHz is travelling in vacuum along y-direction. At a particular point in space and time, B→ = 8.0×10^−8z^T. The value of electric field at this point is : (speed of light = 3 × 10^8 ms–1) x^,y^,z^ are unit vectors along x, y and z direction.
28
Sep
A plane electromagnetic wave of frequency 500 MHz is travelling in vacuum along y-direction. At a particular point in space and time, B→ = 8.0×10^−8z^T. The value of electric field at this point is : (speed of light = 3 × 10^8 ms–1) x^,y^,z^ are unit vectors along x, y and z direction. A plane [...]
The pressure acting on a submarine is 3 × 10^5 Pa at a certain depth. If the depth is doubled, the percentage increase in the pressure acting on the submarine would be : (Assume that atmospheric pressure is 1 × 10^5 Pa density of water is 10^3 kg m^–3, g = 10 ms^–2)
28
Sep
The pressure acting on a submarine is 3 × 10^5 Pa at a certain depth. If the depth is doubled, the percentage increase in the pressure acting on the submarine would be : (Assume that atmospheric pressure is 1 × 10^5 Pa density of water is 10^3 kg m^–3, g = 10 ms^–2) g = [...]
The angle of deviation through a prism is minimum when (A) Incident ray and emergent ray are symmetric to the prism (B) The refracted ray inside the prism becomes parallel to its base (C) Angle of incidence is equal to that of the angle of emergence (D) When angle of emergence is double the angle of incidence Choose the correct answer from the options given below :
28
Sep
The angle of deviation through a prism is minimum when (A) Incident ray and emergent ray are symmetric to the prism (B) The refracted ray inside the prism becomes parallel to its base (C) Angle of incidence is equal to that of the angle of emergence (D) When angle of emergence is double the angle [...]
A block of mass m slides along a floor while a force of magnitude F is applied to it at an angle θ as shown in figure. The coefficient of kinetic friction is µK. Then, the block’s acceleration ‘a’ is given by:(g is acceleration due to gravity)
28
Sep
A block of mass m slides along a floor while a force of magnitude F is applied to it at an angle θ as shown in figure. The coefficient of kinetic friction is µK. Then, the block’s acceleration ‘a’ is given by:(g is acceleration due to gravity) A block of mass m slides along a [...]
For changing the capacitance of a given parallel plate capacitor, a dielectric material of dielectric constant K is used, which has the same area as the plates of the capacitor. The thickness of the dielectric slab is 3/4 d, where ‘d’ is the separation between the plates of parallel plate capacitor. The new capacitance (C’) in terms of original capacitance (C0 ) is given by the following relation :
28
Sep
For changing the capacitance of a given parallel plate capacitor, a dielectric material of dielectric constant K is used, which has the same area as the plates of the capacitor. The thickness of the dielectric slab is 3/4 d, where ‘d’ is the separation between the plates of parallel plate capacitor. The new capacitance (C’) [...]
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a dielectric material of dielectric constant K is used ,
For changing the capacitance of a given parallel plate capacitor ,
where 'd' is the separation between the plates of parallel plate capacitor. The new capacitance (C') in terms of original capacitance (C0 ) is given by the following relation : ,
which has the same area as the plates of the capacitor. The thickness of the dielectric slab is 3/4 d ,
One main scale division of a vernier callipers is ‘a’ cm and nth division of the vernier scale coincide with (n – 1)^th division of the main scale. The least count of the callipers in mm is :
28
Sep
One main scale division of a vernier callipers is ‘a’ cm and nth division of the vernier scale coincide with (n – 1)^th division of the main scale. The least count of the callipers in mm is : One main scale division of a vernier callipers is 'a' cm and nth division of the vernier [...]
The zener diode has a Vz = 30 V. The current passing through the diode for the following circuit is ……… mA.
28
Sep
The zener diode has a Vz = 30 V. The current passing through the diode for the following circuit is ……… mA. The zener diode has a Vz = 30 V. The current passing through the diode for the following circuit is ......... mA. September 28, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions [...]
1 mole of rigid diatomic gas performs a work of Q/5 when heat Q is supplied to it. The molar heat capacity of the gas during this transformation is xR/8, The value of x is ……….. [K = universal gas constant]
28
Sep
1 mole of rigid diatomic gas performs a work of Q/5 when heat Q is supplied to it. The molar heat capacity of the gas during this transformation is xR/8, The value of x is ……….. [K = universal gas constant] 1 mole of rigid diatomic gas performs a work of Q/5 when heat Q [...]