Calculate the wavelength of the light used, Physics

Assignment Help:

Q. A Plano-convex lens of radius 3 m is placed on a flat glass plate and is illuminated by monochromatic light. The radius of the 8th dark ring is 3.6 mm. Calculate the wavelength of the light used.

Data : R = 3m ; n = 8 ; r8 = 3.6 mm = 3.6 × 10-3 m ; λ = ?

Solution : rn = √ nRλ

rn2= nRλ

λ = rn2 / n R = (3.6 X 10-3 )2/ 8 X 3

= 5400 × 10-10 m (or) 5400 A0


Related Discussions:- Calculate the wavelength of the light used

What pd exists across the ends of the conductor, 450J of energy are changed...

450J of energy are changed into heat in 1 minute. What power is dissipated? A current of 10A ?ows by a conductor and 10Wis dissipated. What p.d. exists across the ends of

Radiation hazards, Radiation Hazards: 1. They can injure our body cells...

Radiation Hazards: 1. They can injure our body cells. 2. Excessive radiation might be cause cancer. 3. Energetic radiation penetrates inside the body and can cause other

Explain the lenz law, Explain the Lenz Law An induced current always fl...

Explain the Lenz Law An induced current always flows in a direction so that its electromagnetic field opposes the change in magnetic flux producing it. This is embodied in the

Telescope, Working of terrestrial telescope

Working of terrestrial telescope

Motion in one dimension, an attacker at the base of a castle wall 3.65 m hi...

an attacker at the base of a castle wall 3.65 m high throws a rock straight up with speed 7.40 m/s at a height of 1.55 m above the ground. (a) will the rock reach the top of the wa

ELECTRIC FIELD, ELECTRIC FIELD ABOUT CYLINDERICAL SHELL OF CURVED SU...

ELECTRIC FIELD ABOUT CYLINDERICAL SHELL OF CURVED SURFACE

Wavelength, what is the angle of incidence when the refracted and the refle...

what is the angle of incidence when the refracted and the reflected ray are parallel to one another? does this angle depend on the wavelength of light? Ans) The angle of inciden

Doppler effect, #quest. Imagine a small observer is positioned in front of ...

#quest. Imagine a small observer is positioned in front of the cork in your picture above. As the cork approaches, the observer measures the wavelength of the waves passing by. How

Motion, at a particular instant the speedometer of a vehicle shows 30km/hr ...

at a particular instant the speedometer of a vehicle shows 30km/hr .it is the a}average speed b}instantaneous speed c}uniform speed d}non-uniform speed

Ray diagram, how to make a ray diagram ?? and what are f, p ?? and what is ...

how to make a ray diagram ?? and what are f, p ?? and what is refraction index?????

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