Magnetic Effects of Electric Current — Science STD 10 — Question

Fill in the following blanks with suitable words:
If a coil is viewed from one end, and the current flows in a clockwise direction, then this end is a ________.

Cataract is due to the growth of ________

Light travelling along a normal is ___________.

The ciliary muscles control the shape of the _____.

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 earth wire should be connected to the _____ of an appliance.

A current is a flow of _________ For this to happen there must be a _________.

Fill in the following blanks with suitable words:
In a nuclear power station, nuclear fission takes place in the ____________.

When light is dim, the pupil becomes _____.

Fill in the following blanks with suitable words:
The reciprocal of the focal length in metres gives you the _____________ of the lens, which is measured in _____________.