Question 726:

• JAMB 1993

A metal rod 800mm long is heated from 10^oC to 95^oC. If it expands by 1.36mm, the linear expansivity of the metal is

A. 2.0 x 10²K^-1
B. 2.0 x 10²K^-1
C. 5.0 x 10^-3K^-1
D. 2.0 x 10^-5K^-1

Question 727:

• JAMB 1993

When the volume of a given mass of gas is halved and its temperature doubled, the pressure

A. Remains constant
B. Increases by a factor of 4
C. Increases by a factor of 3
D. Decreases by a factor of 4

Question 728:

• JAMB 1993

200g of water at 90°C is mixed with 100g of water at 30°C. What is the final temperature?

A. 50^oC
B. 60^oC
C. 70^oC
D. 80^oC

Question 729:

• JAMB 1993

The relationship between L and the wavelength I of the stationary wave is

A. 2L = \(\lambda\)
B. L = \(\lambda\)
C. L = \(\frac {\lambda}{3}\)
D. 4L = 3 \(\lambda\)

Question 730:

• JAMB 1993

Determine the distance between the consecutive antinodes XX if the wavelength is 60cm

A. 15cm
B. 30cm
C. 60cm
D. 120cm