JEE Mains Physics 2002-2019 Solved Video Solutions
The ratio of surface tensions of mercury and water is given to be 7.5 while the ratio of their densities is 13.6. Their contact angles, with glass, are close to 135 degree and 0 degree , respectively. It is observed that mercury gets depressed by an amount h in a capillary tube of radius r1, while water rises by the same amount h in a capillary tube of radius r2. The ratio,(r2 /r1), is then close to :
06
Nov
The ratio of surface tensions of mercury and water is given to be 7.5 while the ratio of their densities is 13.6. Their contact angles, with glass, are close to 135 degree and 0 degree , respectively. It is observed that mercury gets depressed by an amount h in a capillary tube of radius r1, [...]
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Chapter 7 - Properties of Solids and Liquids
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JEE Mains Physics 2002-2019 Solved Video Solutions
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(r2 /r1) ,
are close to 135 degree and 0 degree ,
is then close to : ,
respectively. It is observed that mercury gets depressed by an amount h in a capillary tube of radius r1 ,
The ratio of surface tensions of mercury and water is given to be 7.5 while the ratio of their densities is 13.6. Their contact angles ,
while water rises by the same amount h in a capillary tube of radius r2. The ratio ,
with glass ,
Water from a pipe is coming at a rate of 100 liters per minute. If the radius of the pipe is 5 cm, the Reynolds number for the flow is of the order of : (density of water =1000 kg/m^3 , coefficient of viscosity of water =1 mPas).
06
Nov
Water from a pipe is coming at a rate of 100 liters per minute. If the radius of the pipe is 5 cm, the Reynolds number for the flow is of the order of : (density of water =1000 kg/m^3 , coefficient of viscosity of water =1 mPas). coefficient of viscosity of water =1 mPas). [...]
Two identical particles move towards each other with velocity 2v and v respectively. The velocity of centre of mass is-
27
Oct
Two identical particles move towards each other with velocity 2v and v respectively. The velocity of centre of mass is- Two identical particles move towards each other with velocity 2v and v respectively. The velocity of centre of mass is- October 27, 2020 Category: Chapter 5 - Rotational Motion , JEE Mains Physics 2002-2019 Solved [...]
A solid sphere, a hollow sphere and a ring are released from top of an inclined plane (frictionless) so that they slide down the plane. Then maximum acceleration down the plane is for (no rolling) :
27
Oct
A solid sphere, a hollow sphere and a ring are released from top of an inclined plane (frictionless) so that they slide down the plane. Then maximum acceleration down the plane is for (no rolling) : a hollow sphere and a ring are released from top of an inclined plane (frictionless) so that they slide [...]
If F is the force acting in a particle having position vector r and τ be the torque of this force about the origin, then
27
Oct
If F is the force acting in a particle having position vector r and τ be the torque of this force about the origin, then If F is the force acting in a particle having position vector r and τ be the torque of this force about the origin then October 27, 2020 Category: Chapter [...]
Moment of inertia of a circular wire of mass M and radius R about its diameter is
27
Oct
Moment of inertia of a circular wire of mass M and radius R about its diameter is Moment of inertia of a circular wire of mass M and radius R about its diameter is October 27, 2020 Category: Chapter 5 - Rotational Motion , JEE Mains Physics 2002-2019 Solved Video Solutions ,
A solid sphere is rotating in free space. If the radius of the sphere is increased keeping mass same which one of the following with not be affected ?
27
Oct
A solid sphere is rotating in free space. If the radius of the sphere is increased keeping mass same which one of the following with not be affected ? A solid sphere is rotating in free space. If the radius of the sphere is increased keeping mass same which one of the following with not [...]
A particle of mass m moves along line PC with velocity v as shown. What is the angular momentum of the particle about O?
27
Oct
A particle of mass m moves along line PC with velocity v as shown. What is the angular momentum of the particle about O? A particle of mass m moves along line PC with velocity v as shown. What is the angular momentum of the particle about O? October 27, 2020 Category: Chapter 5 - [...]
The moment of inertia of a uniform semicircular disc of mass M and radius r about a line perpendicular to the plane of the disc through the center is
27
Oct
The moment of inertia of a uniform semicircular disc of mass M and radius r about a line perpendicular to the plane of the disc through the center is The moment of inertia of a uniform semicircular disc of mass M and radius r about a line perpendicular to the plane of the disc through [...]
A body A of mass M while falling vertically downwards under gravity brakes into two parts, a body B of mass 1/3 M and a body C of mass 2/3 M. The center of mass of bodies B and C taken together shifts compared to that of body A towards
27
Oct
A body A of mass M while falling vertically downwards under gravity brakes into two parts, a body B of mass 1/3 M and a body C of mass 2/3 M. The center of mass of bodies B and C taken together shifts compared to that of body A towards A body A of mass [...]