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Recent questions tagged refraction of light
+2
votes
1
answer
A convex lens is used to obtain a magnified image of an object on a screen 10m from the lens.
asked
Apr 3, 2019
in
JEE
by
kratos
light – reflection and refraction
refraction of light
cbse
jee
class-10
jee mains
+1
vote
1
answer
There is a dust particle on a glass slab of thickness t and refractive index μ = 1.5.
asked
Apr 2, 2019
in
JEE
by
kratos
refraction of light
jee
optics
icse
class-10
jee mains
class-12
+3
votes
1
answer
When an object is placed 60 cms in front of a diverging lens, a virtual image is formed 20 cm from the lens.
asked
Apr 1, 2019
in
Class 10
by
kratos
refraction of light
class-10
+1
vote
1
answer
When a pin is moved along the principal axis of a small concave mirror, the image position coincides
asked
Mar 31, 2019
in
Class 12
by
kratos
refraction of light
optics
class-10
icse
injso
class-12
+1
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
Function of iris is to (a) move lens forward and backward (b) refract light rays (c) bring about movements of eyelids
asked
Mar 28, 2019
in
Class 12
by
kratos
refraction of light
neet
class-11
class-10
neural control and coordination
+2
votes
1
answer
The power of a concave lens is -12.5D. What is the focal length of the lens?
asked
Mar 28, 2019
in
Class 10
by
kratos
refraction of light
class-10
icse
+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
One end of a long glass rod (μ = 1.5) is formed into a convex surface of radius 6 cm.
asked
Mar 18, 2019
in
JEE
by
kratos
refraction of light
class-10
jee
jee mains
+1
vote
1
answer
For d = 20 cm, The size of image is
asked
Mar 18, 2019
in
Class 12
by
kratos
light – reflection and refraction
refraction of light
isc
class-10
icse
class-12
+1
vote
1
answer
Surfaces of a thin equiconvex glass lens have radius of curvature R. Paraxial rays are incident on it.
asked
Mar 18, 2019
in
JEE
by
kratos
refraction of light
irodov
jee
optics
jee mains
geometrical optics
+2
votes
1
answer
The object * midway between the lens and the mirror. The mirror'* radius of curvature is 20 cm and the lens has a focal length of -16.7 cm
asked
Mar 17, 2019
in
JEE
by
kratos
refraction of light
class-10
jee
jee mains
+3
votes
1
answer
Wgy did the air not goes into water
asked
Mar 16, 2019
in
Class 10
by
kratos
refraction of light
class-10
natural resources
class-9
+3
votes
1
answer
An object is placed of at a distance of 30 cm from a convex lens.
asked
Mar 15, 2019
in
JEE
by
kratos
light – reflection and refraction
refraction of light
jee
ntse
class-10
jee mains
geometrical optics
+2
votes
1
answer
How many principal focus are in lens
asked
Mar 14, 2019
in
Class 10
by
kratos
class-10
optics
refraction of light
+1
vote
1
answer
Which lens is thicker at the edges and thinner at the middle ?
asked
Mar 13, 2019
in
Class 11
by
kratos
power
household circuits
class-11
class-10
the human eye and the colourful world
oscillations
icse
waves
optics
electric energy
refraction of light
+2
votes
1
answer
A ray of light, after refraction through a concave lens, emerges parallel to the principal axis.
asked
Mar 13, 2019
in
Class 10
by
kratos
refraction of light
class-10
icse
refraction through a lens
+3
votes
1
answer
The speed of light in a diamond is 1,24,000 km/*. Find the refractive index of diamond if the speed of light in air is 3,00,000 km/*.
asked
Mar 13, 2019
in
Class 10
by
kratos
light – reflection and refraction
refraction of light
reflection of light
class-10
icse
+1
vote
1
answer
Give the cartesian sign convention for:
asked
Mar 12, 2019
in
Class 10
by
kratos
light – reflection and refraction
light
refraction of light
cbse
reflection of light
class-9
class-10
+1
vote
1
answer
A convex lens forms a real image 4 times magnified when placed at a distance of 6 cm from the lens. Calculate the focal length of the lens.
asked
Mar 10, 2019
in
JEE
by
kratos
refraction of light
jee
class-10
icse
jee mains
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