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Recent questions tagged refraction through lenses
+2
votes
1
answer
For the determination of the focal length of a convex mirror, a convex lens is required because
asked
Mar 29, 2019
in
JEE
by
kratos
refraction through lenses
cbse
optical instruments
jee
refraction through a lens
class-10
icse
optics
jee mains
class-12
+2
votes
1
answer
Write down the characteristic of the image formed when object is between F and the lens?
asked
Mar 22, 2019
in
Class 10
by
kratos
optical instruments
class-10
icse
refraction through lenses
+3
votes
1
answer
An object is placed in front of a lens between its optical centre and the focus and forms a virtual, ***** and diminished image.
asked
Mar 21, 2019
in
Class 10
by
kratos
refraction of light
refraction through lenses
optical instruments
class-10
icse
+1
vote
1
answer
Draw a ray diagram to show the formation of an inverted and diminished image of an object by a lens.
asked
Mar 21, 2019
in
Class 10
by
kratos
optical instruments
class-10
icse
refraction through lenses
+1
vote
1
answer
Which type of lens can form real and virtual images ?
asked
Mar 19, 2019
in
JEE
by
kratos
light
refraction through lenses
reflection of light
class-8
optical instruments
ray optics and optical instruments
jee
class-7
icse
class-10
jee mains
+3
votes
1
answer
An object is placed in front of a convex lens such that the image formed has the same size as that of the object.
asked
Mar 17, 2019
in
Class 10
by
kratos
optical instruments
class-10
icse
refraction through lenses
+3
votes
1
answer
Define the term magnifying power of a simple microscope. How does it depend on the focal length of the lens used?
asked
Mar 13, 2019
in
Class 10
by
kratos
optical instruments
class-10
icse
refraction through lenses
+3
votes
1
answer
An object 5cm high is held 25cm away from a converging lens of focal length f = 10cm.
asked
Mar 13, 2019
in
Class 10
by
kratos
optical instruments
class-10
icse
refraction through lenses
+1
vote
1
answer
The word ‘’KVPY’’ is written on a board and viewed through different lense such that board is at a distance beyond the focal length of the lens.
asked
Mar 10, 2019
in
Class 12
by
kratos
neet
refraction through lenses
optical instruments
aiims
jee
optics
icse
class-10
jee mains
nsep
ray optics
+3
votes
1
answer
A lens forms an upright and diminished image of an object irrespective of its position. What kind of lens is this?
asked
Mar 2, 2019
in
Class 10
by
kratos
refraction through lenses
optical instruments
refraction through a lens
class-10
icse
+1
vote
1
answer
Point out difference between a convex lens and a concave lens.
asked
Mar 1, 2019
in
Class 10
by
kratos
optical instruments
class-10
icse
refraction through lenses
+2
votes
1
answer
When we see an object, the image formed on the retina is (a) real (b) virtual
asked
Feb 28, 2019
in
Class 12
by
kratos
refraction through lenses
optical instruments
class-10
icse
ray optics
class-12
+3
votes
1
answer
The diagram on right shows a ray of white light AB incident on a rectangular glass block,
asked
Feb 25, 2019
in
Class 10
by
kratos
optical instruments
class-10
icse
refraction through lenses
+1
vote
1
answer
Why is the focal length of the lens, used as magnifying glass, kept short?
asked
Feb 24, 2019
in
Class 10
by
kratos
optical instruments
class-10
icse
refraction through lenses
+1
vote
1
answer
Complete the ray diagram to show how the rays pass into and out of the lens?
asked
Feb 24, 2019
in
Class 10
by
kratos
optical instruments
class-10
icse
refraction through lenses
+1
vote
1
answer
Define (i) Principal axis, and (ii) Optical centre of a lens.
asked
Feb 23, 2019
in
Class 10
by
kratos
optical instruments
class-10
icse
refraction through lenses
+2
votes
1
answer
Explain with the help of a ray diagram, why a pencil partly immersed in water appears to be bent at the water surface.
asked
Feb 22, 2019
in
Class 10
by
kratos
light – reflection and refraction
refraction of light
refraction through lenses
reflection of light
optical instruments
class-10
icse
+3
votes
1
answer
Will the image formed by a magnifying glass be real or virtual?
asked
Feb 21, 2019
in
Class 10
by
kratos
optical instruments
class-10
icse
refraction through lenses
+1
vote
1
answer
Define the term principal foci of a concave lens and show them with the help of proper diagrams.
asked
Feb 13, 2019
in
Class 10
by
kratos
refraction through lenses
optical instruments
refraction through a lens
class-10
icse
+3
votes
1
answer
An object is placed 0.40 m from one of the two lenses L1 and L2 of focal lengths 0.20 m and 0.10 m respectively as depicted in the figure.
asked
Feb 11, 2019
in
Class 12
by
kratos
refraction through lenses
cbse
optical instruments
ray optics and optical instruments
class-11
kvpy
class-10
icse
ray optics
class-12
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