1. In a concave mirror, a ray which is parallel to principal axis after reflection will……….
2. The sideways shift of emergent ray from the direction of incident ray is called……
3. The ability of an eye to adjust focal length of the eye lens as per requirement is known as ……of
an eye.
4. The deflection of light by minute particles and molecular in all the directions is known as…….
5. In Tyndall effect, the light rays reach us after deflection of light in all the direction from…..
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Answers
Answer:
1.In the case of concave mirror: A Ray parallel to principal axis passes through the principal focus after reflection from a concave mirror. ... Since, a concave mirror converge the parallel rays after reflection, thus a concave mirror is also known as converging mirror.
2.sided glass slab the emergent ray shifts laterally . The perpendicular distance between the direction. of the incident ray and emergent ray is called. “lateral shift''.
3.The ability of the eye lens to adjust its focal length is called power of accommodation. This is done by the ciliary muscles by changing the focal length of eye lens.
4.dispersion
5.The Tyndall effect is seen when light-scattering particulate matter is dispersed in an otherwise light-transmitting medium, when the diameter of an individual particle is the range of roughly between 40 and 900 nm, i.e. somewhat below or near the wavelengths of visible light (400–750 nm).