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A copper is held horizontally and a bar magnet is dropped through the ring with its lenght along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is
09
Sep
A copper is held horizontally and a bar magnet is dropped through the ring with its lenght along the axis of the ring. The acceleration of the falling magnet while it is passing through the ring is A copper is held horizontally and a bar magnet is dropped through the ring with its lenght along [...]
A boy of mass M is applying a horizontal force to slide a box of mass M on a rough horizontal surface. The coefficient of friction between the shoe of the boy and the floor is μ and that between the box and the floor is μ. In which of the following cases it is certainly not possible to slide the box ?
09
Sep
A boy of mass M is applying a horizontal force to slide a box of mass M on a rough horizontal surface. The coefficient of friction between the shoe of the boy and the floor is μ and that between the box and the floor is μ. In which of the following cases it is [...]
A car starts from rest on a 1600 m long bridge. The coefficient of friction between the tyre and road is 0.8. The minimum time taken by the car to cross the bridge is
09
Sep
A car starts from rest on a 1600 m long bridge. The coefficient of friction between the tyre and road is 0.8. The minimum time taken by the car to cross the bridge is A car starts from rest on a 1600 m long bridge. The coefficient of friction between the tyre and road is [...]
A transparent sphere of radius 20 cm and refractive index 1.6 is fixed in a hole of the partition separating the two media: A (refractive index n1 = 1.2) and B (refractive index n3 = 1.7).
09
Sep
A transparent sphere of radius 20 cm and refractive index 1.6 is fixed in a hole of the partition separating the two media: A (refractive index n1 = 1.2) and B (refractive index n3 = 1.7). A transparent sphere of radius 20 cm and refractive index 1.6 is fixed in a hole of the partition [...]
A beam of light rays converges to a point O (x = 0) on x-axis as shown. The angle of convergence is small. A cube of glass of refractive index mu = 1.5 and side length 40 cm containing a
09
Sep
A beam of light rays converges to a point O (x = 0) on x-axis as shown. The angle of convergence is small. A cube of glass of refractive index mu = 1.5 and side length 40 cm containing a A beam of light rays converges to a point O (x = 0) on x-axis [...]
A parallel beam of light travelling in water ( refractive index = 4/3) is refracted by a spherical air bubble of radius 2mm situated in water. Assuming the light rays to be paraxial.
09
Sep
A parallel beam of light travelling in water ( refractive index = 4/3) is refracted by a spherical air bubble of radius 2mm situated in water. Assuming the light rays to be paraxial. A parallel beam of light travelling in water ( refractive index = 4/3) is refracted by a spherical air bubble of radius [...]
A metallic ring is attached with the wall of a room. When the north pole of magnet is brought near to it , the induced current in the ring will be
09
Sep
A metallic ring is attached with the wall of a room. When the north pole of magnet is brought near to it , the induced current in the ring will be A metallic ring is attached with the wall of a room. When the north pole of magnet is brought near to it the induced [...]
A quarter cylinder of radius R and refractive index 1.5 is placed on a table. A point object P is kept at a distance of mR from it. Find the value of m for which a ray from P will emerge parallel
09
Sep
A quarter cylinder of radius R and refractive index 1.5 is placed on a table. A point object P is kept at a distance of mR from it. Find the value of m for which a ray from P will emerge parallel A quarter cylinder of radius R and refractive index 1.5 is placed on [...]
A box is placed on an inclined plane and has to be pushed down. The angle of inclination is
09
Sep
A box is placed on an inclined plane and has to be pushed down. The angle of inclination is A box is placed on an inclined plane and has to be pushed down. The angle of inclination is September 9, 2020 Category: Cengage NEET by C.P Singh , Chapter 7 - Friction , Part 1 [...]
A glass sphere of radius 2R, refractive index n has a spherical cavity of radius R, concentric with it. A black spot on the inner surface of the hollow sphere is viewed from the left as well as
09
Sep
A glass sphere of radius 2R, refractive index n has a spherical cavity of radius R, concentric with it. A black spot on the inner surface of the hollow sphere is viewed from the left as well as A glass sphere of radius 2R concentric with it. A black spot on the inner surface of [...]