M1 Midterm prep units 12, 13, 1, 2

Which of the following substances is NOT a magnetic material?

• Iron

• Aluminium

• Nickel

• Cobalt

When trying to make a stronger electromagnet, which of the following WOULDN’T make a

stronger electromagnet?

• Adding a battery

• Removing all the insulation from the

  copper wire

• Adding more turns

• Adding a magnetic core

A student is testing the repelling and attracting force of the poles of a permanent magnet.

She places two magnets as follows (see above):

In which configuration would she find a repelling force between the two magnets?

• In configuration 1 only

• In configurations 2 and 3

• In configuration 2 only

• In none of the configurations

Where in a magnet would the magnetic field be the strongest?

• In the middle of the magnet

• At the north pole

• At the south pole

• Both north and south pole

A student is trying to figure out the relation between the electric current and the strength of

an electromagnet. He wishes to find the strength of the electrical current, which of the

following devices can be used for measuring electrical current?

• Thermometer

• Ruler

• Scale

• Ammeter

What is a luminous object?

• An object that forms a shadow.

• An object that only lets green light

  through.

• A source of light.

• Mirrors and mirror like objects.

An object that lets all light through is called:

• An opaque object

• A reflected object

• A non-luminous object

• A transparent object.

Which law is used to predict the direction of a reflected light?

• Law of reflection

• Law of dispersion

• Law of refraction

• Law of filters

Which of the following colours is NOT a part of the spectrum of white light?

• Violet

• Pink

• Green

• Indigo

If you have a red object and shine a blue light on it, what would seem to be the colour of the

object?

• Violet

• Orange

• Green

• Black