Question 4451:

• NECO 2002

Which statement is NOT correct about Rutherford’s model of the atom?

A. The diameter of the nucleus is of the order of 10-15m
B. The mass of an atom is concentrated in the nucleus
C. The model is applicable to atoms with one electron in the outer shell
D. The nucleus of an atom is positively charged
E. The nucleus is surrounded by an electron cloud.

Question 4452:

• NECO 2002

In which of the following are the substances arranged in descending order of their thermal conductivities?

A. Aluminium, copper, iron
B. Aluminium, iron, copper
C. Copper, aluminium, iron
D. Copper, iron. aluminium
E. Iron, copper, aluminium

Question 4453:

• NECO 2002

What part of the camera corresponds to the iris of the eye?

A. Diaphragm
B. Film
C. Focusing ring
D. Lens
E. Shutter

Question 4454:

• NECO 2002

A block of ice of mass 10kg at 0°C absorbs heat energy from its surroundings and changes to water at the same temperature. The heat absorbed is referred to as

A. Heat capacity
B. Latent heat
C. Specific heat
D. Specific heat capacity
E. Specific latent heat.

Question 4455:

• NECO 2002

A body executing a simple harmonic motion has an angular velocity of 22 radians per second. If it has a maximum

A. 1100ms^-1
B. 440 ms^-1
C. 220 ms^-1
D. 22 ms^-1
E. 2.2ms^-1