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Recent questions tagged geometrical optics
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The rays of different colours fail to converge at a point after going through a converging lens. This defect is called
asked
Apr 6, 2019
in
Class 10
by
kratos
ray optics and optical instruments
optics
class-10
geometrical optics
spherical mirrors
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vote
1
answer
Why is the window glass of the old building thick at the bottom?
asked
Apr 6, 2019
in
JEE
by
kratos
cbse
jee
solid state
jee mains 2019
jee mains
class-12
geometrical optics
+2
votes
1
answer
A pole standing in a clear water pond stands in above the water surface; the pond is 2 m deep.
asked
Apr 6, 2019
in
JEE
by
kratos
class-11
jee
geometrical optics
jee mains
+2
votes
1
answer
A U-shaped wire is placed before a concave mirror having radius of curvature 20 cm as shown in figure (18-E1). Find the total length of the image.
asked
Apr 5, 2019
in
JEE
by
kratos
class-11
jee
geometrical optics
jee mains
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vote
1
answer
A convex lens is put 10 cm from a light source and it makes a sharp image on a screen, kept 10 cm from the lens.
asked
Apr 5, 2019
in
JEE
by
kratos
irodov
cbse
jee
optics
class-10
injso
jee mains
jee mains 2019
ray optics
geometrical optics
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vote
1
answer
What is the refractive index of material of a Plano convex lens?
asked
Apr 5, 2019
in
JEE
by
kratos
class-11
jee
jee mains
geometrical optics
+1
vote
1
answer
A thin convex lens of refractive index 1.5 is placed in a liquid with refractive index 2.0. The power of the lens in air is 10 D.
asked
Apr 3, 2019
in
JEE
by
kratos
jee
jee mains 2019
jee mains
ray optics
class-12
geometrical optics
+2
votes
1
answer
The focal lengths of two convex lenses of same material are 20 cm & 30 cm.
asked
Apr 3, 2019
in
JEE
by
kratos
irodov
cbse
jee
optics
jee mains
class-12
geometrical optics
+1
vote
1
answer
A point object is moving with a speed v before an arrangement of two mirrors as shown in figure find the
asked
Apr 1, 2019
in
JEE
by
kratos
class-11
jee
geometrical optics
jee mains
+1
vote
1
answer
A liquid of μe = 1.62 is placed between two Plano convex identical lenses of μ2 = 1.54.
asked
Apr 1, 2019
in
Class 12
by
kratos
neet
aiims
jee
jee mains
geometrical optics
+3
votes
1
answer
Why is white light considered to be poll-chromatic in nature?
asked
Mar 31, 2019
in
JEE
by
kratos
cbse
geometrical optics
political parties and pressure groups
class-11
jee
class-9
optics
jee mains
election
class-12
units and measurements
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vote
1
answer
A beam of light is converging towards a point I on a screen.
asked
Mar 31, 2019
in
JEE
by
kratos
refraction of light
irodov
jee
lenses
optics
jee mains
geometrical optics
+2
votes
1
answer
Assume that R1 = R2, n1 ≠ n3. The ratio, f1/f2, of the two focal lengths is equal to
asked
Mar 30, 2019
in
JEE
by
kratos
irodov
isc
ray optics and optical instruments
jee
optics
icse
jee mains
class-12
geometrical optics
+2
votes
1
answer
Consider two light waves represented by two mutually perpendicular electric field vectors: Ex = Ax cos (ωxu200bu200bu200bu200bu200bu200bu200b t + φx)
asked
Mar 30, 2019
in
JEE
by
kratos
irodov
jee
optics
jee mains
geometrical optics
+3
votes
1
answer
A biconvex lens has a radius of curvature of magnitude 20 cm. Which one of the following options describe best
asked
Mar 30, 2019
in
JEE
by
kratos
irodov
jee
optics
bseb model set
jee mains
ray optics
class-12
geometrical optics
+3
votes
1
answer
A diverging lens, focal length f1 = 20 cm is separated by 5 cm from a converging mirror,
asked
Mar 29, 2019
in
JEE
by
kratos
cbse
class-11
jee
jee mains
class-12
geometrical optics
+3
votes
1
answer
An equviconvex lens of focal length f is cut into four pieces by two planes as shown and the pieces are places as shown and
asked
Mar 29, 2019
in
JEE
by
kratos
jee
geometrical optics
jee mains
+3
votes
1
answer
A triangular medium has varying refracting index n = n0 + ax, where x is the distance (in cm) along x– axis from origin and n0 = 4/3 .
asked
Mar 29, 2019
in
JEE
by
kratos
irodov
images
jee
optics
jee mains
geometrical optics
jee advanced 2019
+3
votes
1
answer
Two lenses of power -15D and +5D are in contact with each other. The focal length of the combination is
asked
Mar 28, 2019
in
JEE
by
kratos
optical instruments
jee
optics
jee mains
ray optics
class-12
geometrical optics
+1
vote
1
answer
A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves away
asked
Mar 28, 2019
in
Class 12
by
kratos
cbse
class-11
ray optics and optical instruments
class-12
geometrical optics
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