which of the following statements are true?
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 [...]
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 [...]
An ideal gas in a closed container is slowly heated. As its temperature increases, which of the following statements are true?
18
Sep
An ideal gas in a closed container is slowly heated. As its temperature increases, which of the following statements are true? An ideal gas in a closed container is slowly heated. As its temperature increases which of the following statements are true? September 18, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice [...]
Two billiard balls A and B, each of mass 50 kg and moving in opposite direction with speed of 5ms^−1 each, collide and rebound with the same speed. If the collision lasts for 10^−3s, which of the following statements are true?
11
Sep
Two billiard balls A and B, each of mass 50 kg and moving in opposite direction with speed of 5ms^−1 each, collide and rebound with the same speed. If the collision lasts for 10^−3s, which of the following statements are true? collide and rebound with the same speed. If the collision lasts for 10^−3s each [...]