A plano-convex lens when silvered on the...

A plano-convex lens when silvered on the plane side behaves like a concave mirror of focal length 60 cm. However when silvered on the convex side it behaves like a concave mirror of focal length 20 cm. Then the refractive index of the lens

2.5

1.5

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

RAY OPTICS
ERRORLESS |Exercise Refraction of Light at Plane Surfaces|9 Videos
RAY OPTICS
ERRORLESS |Exercise Refraction at Curved Surface|8 Videos
MAGNETISM
ERRORLESS |Exercise Assertion & Reason|1 Videos
WAVE OPTICS
ERRORLESS |Exercise SET|23 Videos

Similar Questions

Explore conceptually related problems

A plano-convex lens, when silvered at its plane surface is equivalent to a concave mirror of focal length 28 cm . When its curved surface is silvered and the plane surface not silvered, it is equivalent to a concave mirror of focal length 10 cm then the refractive index of the mateiral of the lens is:

The rear face of an equiconvex lens of focal length 30 cm is silvered that if behave like a concave mirror The focal length of mirror is [ mu_(Lens) = 3/2]

A concave lens of focal length 20 cm placed in contact with ah plane mirror acts as a convex mirror of focal length

When the plane surface of a plano-convex lens of refractive index 1.5 is silvered, it behaves like a concave mirror with.f = 30 cm. When its convex surface is silvered, it will behave like a concave mirror of focal length

A convex lens has a refractive index 1.5 and power 7 diopter. When the lens is immersed in a liquid, it behaves as a concave lens of focal length 120 cm. Calculate the refractive index of the liquid.

An equiconvex lens of glass (mu_(g) = 1.5) of focal length 10 cm is silvered on one side. It will behave like a

An equiconvec lens of glass (mu_(g)-1.5) of focal length 10cm is silvered on one side. It will behave like a

ERRORLESS -RAY OPTICS-SET

A plano-convex lens when silvered on the plane side behaves like a con...
Text Solution
|
In an astronomical telescope in normal adjustment a straight black lin...
Text Solution
|
Three lenses L(1) , L(2) , L(3) are placed co-axially as shown in figu...
Text Solution
|
An object is placed at a point distant x from the focus of a convex le...
Text Solution
|
The diameter of the eye-ball of a normal eye is about 2.5 cm . The pow...
Text Solution
|
In a thin spherical fish bowl of radius 10 cm filled with water of ref...
Text Solution
|
A small fish 0.4 m below the surface of a lake is viewed through a sim...
Text Solution
|
A water drop in air refractes the light ray as
Text Solution
|
Which of the following ray diagram show physically possible refraction...
Text Solution
|
Following figure shows the multiple reflections of a light ray along a...
Text Solution
|
When the rectangular metal tank is filled to the top with an unknown l...
Text Solution
|
A concave mirror and a converging lens (glass with mu = 1.5) both have...
Text Solution
|
A ray of light strikes a plane mirror M at an angle of 45^(@) as shown...
Text Solution
|
A slab of glass, of thickness 6 cm and refractive index 1.5, is placed...
Text Solution
|
A point source of light S is placed at the bottom of a vessel containi...
Text Solution
|
A point object is placed midway between two plane mirrors a distance a...
Text Solution
|
A convergent beam of light is incident on a convex mirror so as to con...
Text Solution
|
PQR is a right angled prism with other angles as 60^(@) and 30^(@). Re...
Text Solution
|
When a ray is refracted from one medium to another, the wavelength cha...
Text Solution
|
Two this lenses, when in contact, produce a combination of power +10 d...
Text Solution
|
The plane faces of two identical plano convex lenses, each with focal ...
Text Solution
|