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A block rests on a rough inclined plane making an angle of 30 degrees with the horizontal. The coefficient of static friction between the block and the plane is 0.8. If the frictional force on the block is 10 N, the mass of the block in (kg) is: (Take g = 10 m/second square)
09
Sep
A block rests on a rough inclined plane making an angle of 30 degrees with the horizontal. The coefficient of static friction between the block and the plane is 0.8. If the frictional force on the block is 10 N, the mass of the block in (kg) is: (Take g = 10 m/second square) The [...]
A compound microscope uses an objective lens of focal length 4 cm and eye lens of focal length 10 cm. An object is placed 6 cm from the objective lens. (a) Calculate the magnifying power of the compound
09
Sep
A compound microscope uses an objective lens of focal length 4 cm and eye lens of focal length 10 cm. An object is placed 6 cm from the objective lens. (a) Calculate the magnifying power of the compound (a) A screen is placed 90 cm from an object. The image of the object on the [...]
The focal length of the eye-piece and objective of a compound microscope are 5 cm and 1 cm respectively and the length of the tube is 20 cm. Calculate the magnifying power of the microscope,
09
Sep
The focal length of the eye-piece and objective of a compound microscope are 5 cm and 1 cm respectively and the length of the tube is 20 cm. Calculate the magnifying power of the microscope, The focal length of the eye-piece and objective of a compound microscope are 5 cm and 1 cm respectively and [...]
A detective uses a converging lens of focal length 12 cm to examine the fine details of some cloth fibers found at the scene of a crime. (a) What is the maximum magnification given by the lens?
09
Sep
A detective uses a converging lens of focal length 12 cm to examine the fine details of some cloth fibers found at the scene of a crime. (a) What is the maximum magnification given by the lens? A detective uses a converging lens of focal length 12 cm to examine the fine details of some [...]
A block of 3 kg rests in limiting equilibrium on an inclined plane of inclination 30. If the plane is raised to an inclination 60∘, the force along the plane required to support it is
09
Sep
A block of 3 kg rests in limiting equilibrium on an inclined plane of inclination 30. If the plane is raised to an inclination 60∘, the force along the plane required to support it is A block of 3 kg rests in limiting equilibrium on an inclined plane of inclination 30. If the plane is [...]
Two thin lenses, one of crown glass and the other of flint glass are put in contact to give an achromatic system of focal length 50 cm. Find the focal length of the two lenses separately.
09
Sep
Two thin lenses, one of crown glass and the other of flint glass are put in contact to give an achromatic system of focal length 50 cm. Find the focal length of the two lenses separately. one of crown glass and the other of flint glass are put in contact to give an achromatic system [...]
Figure shows an equiconvex lens (of refractive index 1.50) in contact with a liquid layer on top of a plane mirror. A small needle with its tip on the principal axis is moved along the axis until
09
Sep
Figure shows an equiconvex lens (of refractive index 1.50) in contact with a liquid layer on top of a plane mirror. A small needle with its tip on the principal axis is moved along the axis until Figure shows an equiconvex lens (of refractive index 1.50) in contact with a liquid layer on top of [...]
A body of mass 10 kg is lying on a rough plane inclined at an angle of 300 to the horizontal and the co-efficient of friction is 0.5. The minimum force required to pull the body up the plane is ( g = 9.8 m/s2).
09
Sep
A body of mass 10 kg is lying on a rough plane inclined at an angle of 300 to the horizontal and the co-efficient of friction is 0.5. The minimum force required to pull the body up the plane is ( g = 9.8 m/s2). The acceleration of the block is 1) 6 m/s^2 2) [...]
A lift is moving downwards with an acceleration equal to the g, acceleration due to gravity. A body of mass m kept on the floor of the lift is pulled horizontally. If the coefficient of friction is μ, then the friction resistance offered acting on the block is:
09
Sep
A lift is moving downwards with an acceleration equal to the g, acceleration due to gravity. A body of mass m kept on the floor of the lift is pulled horizontally. If the coefficient of friction is μ, then the friction resistance offered acting on the block is: A lift is moving downwards with an [...]
A long thin hallow metallic cylinder of radius R has a current i ampere. The magnetic induction B away from the axis at a distance r from the axis varies as shown in
09
Sep
A long thin hallow metallic cylinder of radius R has a current i ampere. The magnetic induction B away from the axis at a distance r from the axis varies as shown in A long thin hallow metallic cylinder of radius R has a current i ampere. The magnetic induction B away from the axis [...]