Electricity — Science STD 10 — Question

Following is far-sightedness

The unit of electrical resistance is:

Name the material used for making the connection wires:

The ability of eye lens to adjust its focal length to form a sharp image of the object at varying distances on the retina is called:

In an electrical circuit three incandescent bulbs A, B and C of rating 40W, 60W and 100W respectively are connected in parallel to an electric source of the following is likely to happen regarding brightness?

The unit of current is:

Using the circuit given below, state which of the following statement is correct?
img...........................

1. When S₁ and S₂ are closed, lamps A and B are lit.₂2
2. With S₁ open and S₂ closed, A is lit and B is not lit.
3. With S₂ open and S₁ closed A and B are lit.
4. With S₁ closed and S₂ open, lamp A remains lit even if lamp B gets fused.

Mohan obtained a sharp inverted image of a distant tree on the screen placed behind the lens. He then moved the screen and tried to look through the lens in the direction of the object. He would see:

The image of an object formed by a plane mirror is:

1. Virtual.
2. Real.
3. Diminished.
4. Upside-down.

The real image formed by a concave mirror is smaller than the object if the object is: