A parallel beam of monochromatic light f...

A parallel beam of monochromatic light falls on a combination of a convex lens and a concave lens of focal lengths 15 cm and 5 cm respectively. What is the distance between the two lenses to obtain a parallel beam of light from the concave lens ?

20 cm

3 cm

10 cm

45 cm

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

RAY OPTICS AND OPTICAL INSTRUMENTS
AAKASH INSTITUTE|Exercise ASSIGNMENT (SECTION - A)|42 Videos
RAY OPTICS AND OPTICAL INSTRUMENTS
AAKASH INSTITUTE|Exercise ASSIGNMENT (SECTION - B)|30 Videos
RAY OPTICS AND OPTICAL INSTRUMENTS
AAKASH INSTITUTE|Exercise EXAMPLE|75 Videos
PHYSICAL WORLD
AAKASH INSTITUTE|Exercise ASSIGNMENT (Section-B)|5 Videos
SEMICONDUCTOR ELECTRONICS (MATERIAL, DEVICES AND SIMPLE CIRUITS )
AAKASH INSTITUTE|Exercise Assignment SECTION - D (Assertion & reason type Question)|10 Videos

Similar Questions

Explore conceptually related problems

Which of the two diverges a beam of parallel rays of light : convex lens or concave lens ?

A parallel beam of white light fall on a combination of a concave and a convex lens, both of the same meterial. Their focal lengths are 15 cm and 30 cm respectively for the mean wavelength in white light. On the other side of the lens system, one sees coloured patterns with violet colour at the outer edge.

A parallel beam of white light falls on a combination of a concave and a convex lens, both of the same material. Their foacl lengths are 15cm and 30cm, respectively for the mean wavelength in white light. On the other side of the lens system, one sees colored patterns with violet color at the outer edge.

A convex lens of focal length 10cm and concave lens of focal length 20 cm are kept 5 cm apart. The focal length of the equivalent lens is

A convex lens of focal length 80 cm and a concave lens of focal length 50 cm are combined toghether. What will be their resulting power ?

A convex lens A of focal length 20cm and a concave lens G of focal length 5cm are kept along the same axis with the distance d between them. If a parallel beam of light falling on A leaves B as a parallel beam, then distance d in cm will be

AAKASH INSTITUTE-RAY OPTICS AND OPTICAL INSTRUMENTS-EXERCISE

Light takes t(1) second to travel a distance x cm in vacuum and the sa...
Text Solution
|
A fish is a little away below the surface of a lake. If the critical a...
Text Solution
|
A parallel beam of monochromatic light falls on a combination of a con...
Text Solution
|
The magnifications produced by a convex lens for two different positio...
Text Solution
|
Three lenses in contact have a combined focal length of 12 cm. When th...
Text Solution
|
The radii of curvatures of a convex lens are 0.04 m and 0.04m. Its ref...
Text Solution
|
A convex glass lens (mu(g) = 1.5) has a focal length of 8 cm when plac...
Text Solution
|
A convex mirror forms an image one-fourth the size of the object. If o...
Text Solution
|
A travelling microscope is focussed on to a scratch on the bottom of a...
Text Solution
|
While a moving picture is being screened, a boy introduced a glass sla...
Text Solution
|
For a plano convex lens, the radius of curvature of convex surface is ...
Text Solution
|
A lens made of material of Refractive index mu(2) is surrounded by a m...
Text Solution
|
A light ray is incident normally on one of the refracting faces of a p...
Text Solution
|
If a light ray incidents normally on one of the faces of the prism of ...
Text Solution
|
A ray of light is incident on one of the faces of the angle prism with...
Text Solution
|
A prism of refractive index sqrt(2) has a prism angle of 60^(@). At wh...
Text Solution
|
The least angle of deviation for a glass prism is equal to its refract...
Text Solution
|
A light ray of angles of incidence 40^(@) emerged from the prism in mi...
Text Solution
|
The angle of minimum deviation for a 75^(@) prism of dense glass is fo...
Text Solution
|
Suppose a small angled prism of 6^(@) deviates a ray through 3^(@), th...
Text Solution
|