IGCSE Physics Paper-1: Specimen Questions with Answers 147 - 149 of 149

In the given table describe the nature of a particles

Answer

d.

Explanation

• Particles are negatively charged. Charge of - particle is -1 and the mass of the particle is ^th of the proton.

• particles are fast and light

• They have medium penetration power.

• Ionize other atoms not strong as Rays.

• -rays are not particles they are waves or rays and they do not have mass and charge. And these rays have high penetration power.

The image of the clock face as seen in a plane mirror is shown

What is the time on the clock?

Answer

c.

Explanation

• The image formed by a plane mirror has certain properties.

• The image formed by a plane mirror is erect and upright.

• Image is in same size of the object.

• Distance of object from mirror is the same as the image from the mirror.

• It will have lateral inversion it means the left right reversal of the image.

In the circuit, what is the current in the lower branch?

Answer

c.

Explanation

• The above circuit is a parallel circuit and it contains branches.

• Some of the current passes through both branches.

• The current in the branches adds up the total current leaving the cell.

• So, other branch has the current of 0.2A.