Optics — Science STD 10 — Question

______ provides mechanical support to plants.

The pain of testes is enclosed by a sac called _____.

The refractive index depends on ………. of light.

A ray parallel to the principal axis of a convex lens after refraction passes through …………

The mathematical form of the principle of moments is ………..

A thermometer is used to measure _____.

When a parallel beam of light passes through a convex lens, the rays from the outer edges are …………

Iron reacts with Chlorine to form _____ compound.

To produce an acceleration of 1 m/s² in an object of mass 1 kg. The force required is ……… and for 3 kg of mass to produce same acceleration, the force required is ……….

For a convex lens, as the object approaches the lens the image becomes …………