Find in which direction must the lens move

Assignment Help Physics
Reference no: EM13308234

A photographer uses his camera, whose lens has a 70mm focal length, to focus on an object 4.5m away. He then wants to take a picture of an object that is 60cm away.

1. In which direction must the lens move to focus on this second object?

a) away from the film

b) towards the film

2. How far must the lens move to focus on this second object?

Reference no: EM13308234

Questions Cloud

Why is it considered to be problematic : Suppose, during the last year, in a closed economy (net exports=0), consumption expenditures were $20 billion, investment was $12 billion, government purchases were $20 billion, and the underground economy produced $10 billion worth of goods and serv..
What will be gage reading if atmospheric pressure increases : a bourdon pressure gauge attached to the outside of a tank containing air reads 77.0 psi when the local atmospheric pressure is 760 mm Hg. what will be the gage reading if the atmospheric pressure increases to 773 mm Hg
What is the average drift speed : Consider a 4.7mm-diameter wire made from copper (mass density of 8.9 g/cc). THe wire is carrying a current of 8milliamp. What is the average drift speed
How to compute the horizontal distance in elevation : The slope distance between two points is 72.665 m, and the difference in elevation between the points is 1.120 m. Compute the horizontal distance.
Find in which direction must the lens move : A photographer uses his camera, whose lens has a 70mm focal length, to focus on an object 4.5m away. In which direction must the lens move to focus on this second object
Find number of completely mixed chlorine contact chambers : Determine the number of completely mixed chlorine contact chambers each having a detention time of 30 min that would be required in a series arrangement to reduce the bacterial count of a treated effluent form 10^6 to 14.5 organisms/mL
The articles of confederation established a con federa form : The Articles of Confederation established a confederal form of government.
Find prime numbersless than or equal natural numbers : Find the prime numbersless than or equal to the following natural numbers.
Interactional model of communication : Analyse the situation described in Case Study (paragraphs 6 & 7) using an ‘Interactional model of Communication'. Discuss the strengths and limitations of this theory.

Reviews

Write a Review

Physics Questions & Answers

  Find the altitude above which wispy cirrus clouds can occur

Puffy cumulus clouds, which are made of water droplets, occur at lower altitudes in the atmosphere. Find the altitude y (measured from sea level) above which wispy cirrus clouds can occur.

  Find the magnitude of the resultant force

Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 58.0?. Dog A exerts a force of 260N , and dog B exerts a force of 320N

  What is the metal weights density

You lower a weight of metal in a beaker filled with water standing on a scale. When metal weight hangs above the water weighs 179.6 grams, What is the metal weights density

  What is minimum speed the tranquilizer dart

An injured monkey sits perched on a tree branch 3.0 m above the ground, while a wildlife veterinarian is kneeling down in the bushes 88.5 m away attempting to subdue the monkey with a tranquilizer gun.

  What is the force constant of this spring

To stretch a spring 2.00 cm from its unstretched length, 15.0 J of work must be done, What is the force constant of this spring

  How much work is required to eject a positive sodium

The average force exerted on him by the ground is +18000 N, where the upward direction is taken to be the positive direction. From what height did the student fall? assume that the only force acting during the collision is that due to the ground.

  What is the magnitude of the tension force in the string

A massless frictionless pulley, an ideal string, and two masses (m1 = 2.50 kg and m2 = 4.00 kg) are connected together, What is the magnitude of the tension force in the string

  Find out her altitude as she crosses the bar

Her speed when she is above the bar is 1.3 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and find out her altitude as she crosses the bar.

  Determine bearth by simple trigonometry

Sketch a vector diagram of the earth's magnetic field. The dip angle is 65 degrees, Determine Bearth by simple trigonometry

  What is velocity of insect after it has accelerated

What is velocity of insect after it has accelerated

  How many revolutions will the car have gone through

How many revolutions will the car have gone through.

  Find the ratio of the kinetic energies of the two objects

a 0.1kg ball moving at 10 m/s collides with a 1 kg block that is initially at rest. Find the ratio of the kinetic energies of the two objects after collision

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd