Explain about refracting telescopes, Physics

Assignment Help:

Refracting telescopes, if uncorrected, suffer from chromatic aberration. 

Chromatic aberration occurs because:

a)  red light is focused more strongly than blue light

b)  blue light is focused more strongly than red light

c)  the outer light rays are focused more strongly than the central rays,

d)  the central light rays are focused more strongly than the outer rays.

 

Ans- Blue light is focused more strongly than red light

 

 


Related Discussions:- Explain about refracting telescopes

Elasticity of solids, a metal wire 75.0 cm long and 0.130 cm in diameter st...

a metal wire 75.0 cm long and 0.130 cm in diameter stretches 0.0350 cm when a load of 8.00 kg is hung on its end. find the stress, the strain and the young''s modulud for the mater

Determine the tension on the nail, A block is placed under the head of the ...

A block is placed under the head of the claw hammer to aid in removing the nail.  The pull on the handle is P39 N, the angle of the hammer to the vertical is P40 and the length of

Photoelectric cell, A device which changes light energy into electrical ene...

A device which changes light energy into electrical energy is known as photoelectric cell. It is also known as photocell or electric eye.

The monkey and zookeeper- vectors and projectiles, The Monkey and Zookeeper...

The Monkey and Zookeeper There is an attractive monkey down at the zoo. The monkey spends most of its day execution from a limb of a tree. The zookeeper feeds the monkey throug

What is the total flux by the closed surface a, In the figure below the clo...

In the figure below the closed curves A and B represent closed surfaces. What is the total flux by the closed surface A? Ans: In concurrence with Gauss's Law the net o

Two cars in 2-dimensional collision, Two Cars in 2-Dimensional Collision ...

Two Cars in 2-Dimensional Collision Inelastic Collision :  Collisions among objects are governed through laws of momentum and energy. While a collision occurs within an isola

Explain air resistance and the dimensions of the football, A football playe...

A football player kicks a field goal from a distance of 45 m from the goalpost. The football is launched at a 35° angle above the horizontal. What initial velocity is neede

Scattering of light, Molecules of a medium after absorbing incoming light r...

Molecules of a medium after absorbing incoming light radiations, sends them in all direction. This process is called as Scattering.

How much should be the voltage of an x-ray tube, Q. How much should be the ...

Q. How much should be the voltage of an X-ray tube so that the electrons emitted from the cathode may give an X-ray of wavelength 1 A o after striking the target?  λmin = 124

How the neutron to proton ratio changes during alpha-decay, Describe, with ...

Describe, with the help of a nuclear reaction in each of the following cases, how the neutron to proton ratio alters during (i) alpha-decay (ii) beta-decay?

Write Your Message!

Captcha
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