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Recent questions tagged optical instruments
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1
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Discuss refraction of monochromatic light through a prism and Derive prism formula ?
asked
Apr 7, 2019
in
Class 12
by
kratos
neet
optical instruments
aiims
ray optics
class-12
+1
vote
1
answer
How is the working of a telescope different from that of a microscope ?
asked
Apr 6, 2019
in
Class 12
by
kratos
optical instruments
ray optics and optical instruments
class-12
cbse
+2
votes
1
answer
Expression for the magnifying power of astronomical telescope at least distance of distinct vision
asked
Apr 6, 2019
in
JEE
by
kratos
optical instruments
jee
optics
bseb model set
jee mains
class-12
+3
votes
1
answer
An astronomical telescope has a large aperture to (a) reduce spherical aberration.
asked
Apr 6, 2019
in
JEE
by
kratos
optical instruments
ray optics and optical instruments
jee
class-11
optics
jee mains
ray optics
class-12
+2
votes
1
answer
Two thin convex lens of power + 5 and +4 diopter are placed co-axially at a distance 10 cm.
asked
Apr 5, 2019
in
JEE
by
kratos
isc
light-reflection and refraction
cbse
optical instruments
ray optics and optical instruments
jee
icse
jee mains
ray optics
class-12
+3
votes
1
answer
Stars twinkle while the planets do not. why?
asked
Apr 5, 2019
in
Class 12
by
kratos
neet
ray optics
cbse
optical instruments
aiims
class-10
the human eye and the colourful world
+1
vote
1
answer
A compound microscope consists of an objective of focal length 1 cm and eyepiece of focal length 5 cm separated by 12.2 cm.
asked
Apr 4, 2019
in
JEE
by
kratos
cbse
optical instruments
ray optics and optical instruments
jee
class-11
jee mains
class-12
+1
vote
1
answer
Does short-sightedness (myopia) or long sightedness (hypermetropia) imply necessarily that the eye has partially lost its ability of accommodation?
asked
Apr 3, 2019
in
Class 12
by
kratos
the human eyes and the colorful world
class-12
class-10
neet
ray optics
optics
optical instruments
special senses
aiims
+1
vote
1
answer
Assertion: A thick lens shows more chromatic aberration.
asked
Apr 3, 2019
in
Class 12
by
kratos
neet
optical instruments
aiims
ray optics
class-12
+3
votes
1
answer
Explain why the planets do not twinkle?
asked
Apr 3, 2019
in
Class 12
by
kratos
neet
ray optics
cbse
optical instruments
aiims
class-10
the human eye and the colourful world
+2
votes
1
answer
Write a note Scattering of light. State Rayleigh’* scattering law and hence explain Blue colour of the sky and reddish appearance
asked
Apr 2, 2019
in
Class 12
by
kratos
neet
cbse
optical instruments
aiims
class-10
ray optics
class-12
the human eye and the colourful world
+2
votes
1
answer
For which wavelength is eye the most sensitive.
asked
Apr 1, 2019
in
Class 12
by
kratos
neet
optical instruments
aiims
ray optics
class-12
+3
votes
1
answer
It the focal length of objective lens is increased then magnifying power of :
asked
Apr 1, 2019
in
Class 12
by
kratos
class-12
neet
ray optics and optical instruments
optics
optical instruments
cbse
aiims
+1
vote
1
answer
(i) Draw a neat labelled ray diagram of an astronomical telescope in normal adjustment. Explain briefly its working.
asked
Mar 31, 2019
in
JEE
by
kratos
cbse
optical instruments
ray optics and optical instruments
jee
class-11
jee mains
ray optics
class-12
+1
vote
1
answer
The light gathering power of an astronomical telescope depends upon
asked
Mar 31, 2019
in
Class 12
by
kratos
optical instruments
ray optics and optical instruments
class-12
cbse
+3
votes
1
answer
Two thin lenses of powers 5D and 2D are placed coaxilly at a distance 20 cm apart. Find the
asked
Mar 30, 2019
in
Class 12
by
kratos
light – reflection and refraction
cbse
optical instruments
class-10
ray optics
class-12
+1
vote
1
answer
(i) Draw a neat labelled ray diagram of a compound microscope. Explain briefly its working.
asked
Mar 30, 2019
in
JEE
by
kratos
cbse
optical instruments
ray optics and optical instruments
jee
class-11
jee mains
class-12
+2
votes
1
answer
Define linear magnification and obtain an expression for it?
asked
Mar 30, 2019
in
Class 12
by
kratos
ray optics
class-12
optical instruments
+1
vote
1
answer
Derive the expression for effective focal length of two thin lenses kept in contact.
asked
Mar 30, 2019
in
Class 12
by
kratos
isc
cbse
optical instruments
icse
ray optics
class-12
+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
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