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an object 0.4 m from a lens gives a virtual image 0.1 m from the lens what is the focal length of this lens what kind of lens is this
A ray of light travels from air into a liquid at an angle of incidence of 30°. If it is deviated by 10, what is the speed of light in the liquid?
(Note: n of liquid is greater than n of air)
If the refractive index of a liquid is 4/3. The critical angle for the liquid is ____________?
In a laboratory experiment, a lens produces an enlarged, real, and inverted image of an object
placed in front of it. (a) What type of lens is this? (b) What is the position of the object
relative to the principal focus of the lens?
In a laboratory experiment, a lens produces an enlarged, real, and inverted image of an object
placed in front of it. (a) What type of lens is this? (b) What is the position of the object
relative to the principal focus of the lens?
How much work does the piston in a hydraulic system do during one 2.0-cm stroke if the end area of the piston is 0.75 cm2 and the pressure in the hydraulic fluid is 50 kPa?
A soccer player on a horizontal playground kicks a ball away with a velocity
v0 under an angle α with the playground. The ball can be considered to be a projectile. Air resistance can be neglected and the gravitational acceleration is g. During the trajectory, the ball reaches a maximum height H.Now he kicks a second ball under the same angle but with double velocity. What is the maximum height the second ball will reach?
The speed of glycerin flowing in a 5.0 cm i.d. pipe is 0.54 m/s. Find the fluid‘s speed in a 3.0 cm i.d. pipe that connects with it, both pipes flowing full. Ans. 1.5 m/s
A conductor carries a current that is equivalent to a 5-amp continuous current in one direction and a superimposed full-wave rectifier current in the opposite direction. What is the maximum value of the latter if the average conductor current is zero?
A conductor carries a current that is equivalent to a 5-amp continuous current in one direction and a superimposed full-wave rectifier current in the opposite direction. What is the maximum value of the latter if the average conductor current is zero?
