JEE Mains Physics 2002-2019 Solved Video Solutions
Two light waves having the same wavelength λ in vacuum are in phase initially. Then the first wave travels a path L1 through a medium of refractive index n1 while the second wave travels a path of length L2 through a medium of refractive index n2. After this the phase difference between the two waves is
18
Sep
Two light waves having the same wavelength λ in vacuum are in phase initially. Then the first wave travels a path L1 through a medium of refractive index n1 while the second wave travels a path of length L2 through a medium of refractive index n2. After this the phase difference between the two waves [...]
A perfectly dimagnetic sphere has a small spherical cavity at its centre, which is filled with a paramagnetic substance. The whole system is placed in a uniform magnetic field B . Then the field inside the paramagnetic substance is:
18
Sep
A perfectly dimagnetic sphere has a small spherical cavity at its centre, which is filled with a paramagnetic substance. The whole system is placed in a uniform magnetic field B . Then the field inside the paramagnetic substance is: A perfectly dimagnetic sphere has a small spherical cavity at its centre which is filled with [...]
Two resistors 400Ω and 800Ω are connected in series with a 6V battery. The potential difference measured by voltmeter of 10k ? across 400Ω resistor is
18
Sep
Two resistors 400Ω and 800Ω are connected in series with a 6V battery. The potential difference measured by voltmeter of 10k ? across 400Ω resistor is Two resistors 400Ω and 800Ω are connected in series with a 6V battery. The potential difference measured by voltmeter of 10k ? across 400Ω resistor is September 18, 2021 [...]
A particle is moving unidirectionally on a horizontal plane under the action of a constant power supplying energy source. The displacement (s) – time (t) graph that describes the motion of the particle is (graphs are drawn schematically and are not to scale)
18
Sep
A particle is moving unidirectionally on a horizontal plane under the action of a constant power supplying energy source. The displacement (s) – time (t) graph that describes the motion of the particle is (graphs are drawn schematically and are not to scale) A balloon filled with helium (32°C and 1.7 atm.) bursts. Immediately afterwards [...]
The mass density of a planet of radius R varies with the distance r from its centre as ρ(r) = ρ0 (1 – r^2/R^2 ). Then the gravitational field is maximum at
18
Sep
The mass density of a planet of radius R varies with the distance r from its centre as ρ(r) = ρ0 (1 – r^2/R^2 ). Then the gravitational field is maximum at The mass density of a planet of radius R varies with the distance r from its centre as ρ(r) = ρ0 (1 - [...]
Concentric metallic hollow spheres of radii R and 4R hold charges Q1 and Q2 respectively. Given that surface charge densities of the concentric spheres are equal, the potential difference V(R) – V(4R) is
18
Sep
Concentric metallic hollow spheres of radii R and 4R hold charges Q1 and Q2 respectively. Given that surface charge densities of the concentric spheres are equal, the potential difference V(R) – V(4R) is Concentric metallic hollow spheres of radii R and 4R hold charges Q1 and Q2 respectively. Given that surface charge densities of the [...]
A bakelite beaker has volume capacity of 500 cc at 30°C. When it is partially filled with Vm volume (at 30°C) of mercury, it is found that the unfilled volume of the beaker remains constant as temperature is varied. If γ(beaker) = 6 × 10^–6°C–1 and γ(mercury) = 1.5 10^-4 °C-1 , where γ is the coefficient of volume expansion, then Vm (in cc) is close to ___________.
18
Sep
A bakelite beaker has volume capacity of 500 cc at 30°C. When it is partially filled with Vm volume (at 30°C) of mercury, it is found that the unfilled volume of the beaker remains constant as temperature is varied. If γ(beaker) = 6 × 10^–6°C–1 and γ(mercury) = 1.5 10^-4 °C-1 , where γ is [...]
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A bakelite beaker has volume capacity of 500 cc at 30°C. When it is partially filled with Vm volume (at 30°C) of mercury ,
it is found that the unfilled volume of the beaker remains constant as temperature is varied. If γ(beaker) = 6 × 10^–6°C–1 and γ(mercury) = 1.5 10^-4 °C-1 ,
then Vm (in cc) is close to ___________. ,
where γ is the coefficient of volume expansion ,
When a long glass capillary tube of radius 0.015 cm is dipped in a liquid, the liquid rises to a height of 15 cm within it. If the contact angle between the liquid and glass to close to 0°, the surface tension of the liquid, in millinewton m–1, is [ρ(liquid) = 900 kgm^–3, g = 10 ms^–2] (Give answer in closest integer) _____.
18
Sep
When a long glass capillary tube of radius 0.015 cm is dipped in a liquid, the liquid rises to a height of 15 cm within it. If the contact angle between the liquid and glass to close to 0°, the surface tension of the liquid, in millinewton m–1, is [ρ(liquid) = 900 kgm^–3, g = [...]
Tags:
g = 10 ms^–2] (Give answer in closest integer) _____. ,
in millinewton m–1 ,
is [ρ(liquid) = 900 kgm^–3 ,
the liquid rises to a height of 15 cm within it. If the contact angle between the liquid and glass to close to 0° ,
the surface tension of the liquid ,
When a long glass capillary tube of radius 0.015 cm is dipped in a liquid ,
A person of 80 kg mass is standing on the rim of a circular platform of mass 200 kg rotating about its axis at 5 revolutions per minute (rpm). The person now starts moving towards the centre of the platform. What will be the rotational speed (in rpm) of the platform when the person reaches its centre _________
18
Sep
A person of 80 kg mass is standing on the rim of a circular platform of mass 200 kg rotating about its axis at 5 revolutions per minute (rpm). The person now starts moving towards the centre of the platform. What will be the rotational speed (in rpm) of the platform when the person reaches [...]
A cricket ball of mass 0.15 kg is thrown vertically up by a bowling machine so that it rises to a maximum height of 20 m after leaving the machine. If the part pushing the ball applies a constant force F on the ball and moves horizontally a distance of 0.2 m while launching the ball, the value of F (in N) is (g = 10 ms^–2) ____.
18
Sep
A cricket ball of mass 0.15 kg is thrown vertically up by a bowling machine so that it rises to a maximum height of 20 m after leaving the machine. If the part pushing the ball applies a constant force F on the ball and moves horizontally a distance of 0.2 m while launching the [...]