Neco Physics 2002 Past Questions and Answers

Question 36:

• NECO 2002

What is the escape velocity of a satellite launched from the earth’s surface? (Take g as 10ms^-2 and the radius of the earth as 6.4 × 10⁶m)

A. 7.80 × 10-3ms^-1
B. 1.13 × 10-4ms^-1
C. 3.56 × 107ms^-1
D. 6.00 × 107ms^-1
E. 1.20 × 108ms^-1

Question 37:

• NECO 2002

A body of mass 4 kg is accelerated from rest by a steady force of 9N. What is its speed when it has travelled a distance of 8m?

A. 6 ms^-1
B. 18 ms^-1
C. 32 ms^-1
D. 36 ms^-1
E. 48 ms^-1

Question 38:

• NECO 2002

A brass cube of side 10cm is heated through 30°C. If the linear expansivity of brass is 2.0 × I0\(^{-5}\) K-1 , what is the increase in its volume?

A. 0.06 cm³
B. 0.18cm³
C. 0.60cm³
D. 1.20cm³
E. 1.80cm³

Question 39:

• 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 40:

• 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