Human Eyes ,Reflection and Refraction Physics Class X
NCERT Solution, MCQs, Study Notes, Q & A
Question: What is the minimum distance between an object and its real image in case of a concave mirror?
Question: What is the minimum distance between an object and its real image in case of a concave mirror?
Ans: The object and the image, both
are at the centre of curvature of the concave mirror. The image formed is real
and inverted. The minimum distance between object and its image = 0 units
Question: Why is
the refractive index of atmosphere different at different altitudes?
Ans: it is because it
is a mixture of differnet particles and gas molecules which often has diff. refractive
indices
Question: When a light ray passes obliquely through
the atmosphere in an upward direction, how does its path generally change?
Ans: When a light
ray passes obliquely through the atmosphere in an upward direction, it 's path
changes due to atmospheric refraction. This refraction happens because each
atmospheric layer has a different optical density, due to which its path
changes.
Question: State two factors on which the lateral displacement of the emergent ray
in a rectangular glass slab depends for an oblique incident ray on the opposite
face
Ans: The thickness of the glass slab and the optical density of
the glass slab affect the lateral displacement of the emergent ray.
Question: Between which two points related to a
concave mirror should an object be placed to obtain on a screen an image twice
the size of the object?
Ans : Between center of curvature and Principal Focus
10th Light Reflection and refractions
Related Posts Links
|
Comments
Post a Comment