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Recent questions tagged light energy
+3
votes
1
answer
Name the kind of mirror used to obtain (a) a real and enlarged image
asked
Apr 6, 2019
in
Class 10
by
kratos
class-8
light energy
class-7
class-10
icse
+2
votes
1
answer
You are standing at a distance 2 metre from a plane mirror. (a) What is the distance of your image from the mirror ?
asked
Apr 5, 2019
by
kratos
class-7
light energy
icse
+3
votes
1
answer
What do you understand by the term spectrum ? Name the various colors present in the spectrum of sunlight.
asked
Apr 1, 2019
by
kratos
class-8
class-7
light energy
icse
+2
votes
1
answer
AB is an incident beam of light and CD is a reflected beam (the number of reflections for this may be 1 or more than 1)
asked
Mar 24, 2019
in
Class 12
by
kratos
neet
class-8
optical instruments
light energy
aiims
optics
icse
ray optics
class-12
bitsat
+3
votes
1
answer
What do you mean by the term dispersion ?
asked
Mar 24, 2019
by
kratos
class-7
light energy
icse
class-8
+3
votes
1
answer
(i) A plane wavefront approaches a plane surface separating two media.
asked
Mar 21, 2019
in
Class 12
by
kratos
cbse
huygens principle
class-8
ray optics and optical instruments
light energy
icse
class-12
wave optics
+2
votes
1
answer
An imaginary material reflects red light, scatters green light, transmits blue light and absorbs yellow, orange and violet light.
asked
Mar 21, 2019
in
Class 10
by
kratos
class-8
electromagnetic waves
spectrum
light energy
ntse
class-10
icse
+2
votes
1
answer
State in words, how do you find the location of image of an object formed by a plane mirror.
asked
Mar 20, 2019
by
kratos
class-7
light energy
icse
class-8
+3
votes
1
answer
Name the phenomenon that the white light splitting into different colours.
asked
Mar 19, 2019
in
JEE
by
kratos
light
class-8
light energy
jee
icse
jee mains
superposition of waves
structure of atom
+2
votes
1
answer
Draw the ray diagram showing the position of the object and image, to get the virtual ***** image whose size is enlarged by using convex lens.
asked
Mar 14, 2019
in
Class 10
by
kratos
light – reflection and refraction
reflection of light
class-8
cbse
light energy
class-10
icse
+2
votes
1
answer
A light ray in passing from water to a medium (a) speeds up (b) slows down. In each case, give one example of the medium.
asked
Mar 12, 2019
in
Class 10
by
kratos
reflection of light
light energy
class-7
class-10
icse
+2
votes
1
answer
A piece of paper appears ***** in sunlight. What will be it colour when seen in red light ?
asked
Mar 10, 2019
by
kratos
class-7
light energy
icse
class-8
+1
vote
1
answer
Draw a ray diagram to show the formation of image of an object placed between the pole and focus of a concave mirror.
asked
Mar 7, 2019
by
kratos
class-8
light energy
icse
+3
votes
1
answer
The speed of light in air or vacuum is 1. 3 × 10^8 M *^-1
asked
Mar 6, 2019
by
kratos
class-7
light energy
icse
class-8
+1
vote
1
answer
Draw ray diagrams to show the principal focus of a : (a) Concave mirror (b) Convex mirror
asked
Mar 3, 2019
in
Class 10
by
kratos
light
refraction of light
cbse
class-8
light energy
class-10
icse
+2
votes
1
answer
Explain the formation of mirage.
asked
Mar 1, 2019
in
Class 12
by
kratos
class-8
class-11
light energy
love across the salt desert
optics
icse
class-12
+1
vote
1
answer
Fill in the blanks with the appropriate colour (a) Blue + ………… = Cyan (b) Red + Blue + …………. = Vhite (c) Red + Blue = ………… (d) Green + Red = …………
asked
Feb 27, 2019
by
kratos
class-7
light energy
icse
class-8
+3
votes
1
answer
A concave mirror of radius of curvature R has a circular outline of radius r. A circular disc is to be placed normal to the axis at the focus
asked
Feb 26, 2019
in
JEE
by
kratos
light – reflection and refraction
class-8
light energy
jee
class-10
icse
jee mains
+3
votes
1
answer
A man standing in front of a plane mirror finds his image to be at a distance of 6 metre from himself.
asked
Feb 25, 2019
in
Class 10
by
kratos
light – reflection and refraction
cbse
reflection of light
light energy
class-7
icse
class-10
+1
vote
1
answer
A rose appears red in white light. How will it appear in (i) green light, (ii) red light ? Give a reason for your answer for each.
asked
Feb 25, 2019
by
kratos
light energy
class-7
icse
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