To focus a camera on objects at different distances

Reference no: EM13647925

To focus a camera on objects at different distances, the converging lens is moved toward or awayfrom the film, so a sharp image always falls on the film. A camerawith a telephoto lens (f = 215.0 mm) is to be focused onan object located first at a distance of 3.5 m and then at 47.0 m.Over what distance must the lens be movable?

Reference no: EM13647925

Questions Cloud

Horizontal component of the projectiles velocity : A projectile is fired with an initial speed of 1000 m/s at anangle of 37o above the horizontal. If air resistance is neglected, the horizontalcomponent of the projectile’s velocity after 20 s is approximately ...?

What force does the pin apply to the rod initally : long thin uniform rod lies motionless in fric free horizontalplane along y-axis. It's pinned to the ground with a friction freepivot. A force F is applied at 90deg. to the bar and at its veryend. IF the mass is 1kg and force is 2N:

A converging lens has a focal length : A converging lens has a focal length of 0.060m. An object is located 0.030 m to the left of this lens. A secondconverging lens has the same focal length as the first one and islocated 0.120 m to the right of it. Relative to the second lens,where is t..

Photographer usesa telephoto lens : From a distance of 65 m, a photographer usesa telephoto lens (f = 300.0 mm) to take a picture of acharging rhinoceros. How far from the rhinoceros would the photographer have to be to record an image of the same size using alens whose focal length is..

To focus a camera on objects at different distances : To focus a camera on objects at different distances, the converging lens is moved toward or awayfrom the film, so a sharp image always falls on the film.

Skateboarder in the drawing starts down the left side : The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 3.85 m/s. If non-conservative forces,such as kinetic friction and air resistance, are negligible, what would be the height h of the highest point reached b..

One boxis relatively light and sits on a steep ramp : The drawing shows two boxes resting on frictionless ramps. One boxis relatively light and sits on a steep ramp. The other box isheavier and rests on a ramp that is less steep.

Generator is connected across primary coil of transformer : A generator is connected across the primary coil(Np turns) of a transformer, while a resistanceR2 is connected across the secondary coil(Ns turns).

How much energy is transferred to the bowl : A 155 g copper bowl contains205 g of water, both at 20.0°C. Avery hot 300 g copper cylinder is dropped into the water, causingthe water to boil, with 5.40 g beingconverted to steam.

User Account

All Pages