Control and Coordination — Science STD 10 — Question

Lenses refract light to form images, a _________ lens can form both real and virtual images, but a diverging lens forms only ________ images.

Fill in the following blanks with suitable words:
Resistance is measured in _________ The resistance of a wire increases as the length _________ as the temperature _________ and as the cross-sectional area _________.

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A person is short-sighted if his eyeball is too ____ Spectacles with a _____ lens are needed. A person is long sighted if his eyeball is too _____ Spectacles with a ____ lens are needed. These focus light rays exactly on to the _____.

The sodium salt of a long chain fatty acid is called ___________.

The image in a convex lens depends upon the distance of the __________ from the lens.

Fill in the following blanks with suitable words:
The more acidic a solution, the _________ the pH.

The scientific name of all human beings is ________ .

Chemicals which are released at the synaptic junction are called ____________.

Current is measured in __________ using an __________ placed in __________ in a circuit.

A periodic table consists of horizontal rows of elements called _____________ and vertical columns called.