Physics 2011 WAEC Past Questions

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A metal of mass 200g at a temperature of 100^oC is placed in 100g of water at 25^oC in a container of negligible heat capacity. If the final steady temperature is 30^oC, calculate the specific heat capacity of the metal. [specific heat capacity of the water is 4200 Jkg^-1 K^-1]

A. 150 Jkg^-1K^-1
B. 300 Jkg^-1K^-1
C. 320 Jkg^-1K^-1
D. 1960 Jkg^-1K^-1

View Answer & Discuss (3) WAEC 2011

Ether produces a cooling effect when it is poured on the hand because it has

A. low conductivity
B. high conductivity
C. high latent heat of vaporization
D. low latent heat of vaporization

View Answer & Discuss (4) WAEC 2011

Which of the following statements about the image formed by a plane mirror is not correct?

A. it is laterally inverted
B. it has unit magnifiation
C. it is formed by actual intersection of rays
D. its distance from the mirror is equal to that of the object from the mirror

View Answer & Discuss WAEC 2011

The image formed by a convex mirror is always

A. real, erect and diminished
B. real, inverted and diminished
C. virtual, inverted and diminished
D. virtual, erect and diminshed

View Answer & Discuss WAEC 2011

A ray undergoes a minimum deviation at 40^o when it is incident on equilateral triangular glass prism. Calculate the refractive index of the prism

A. 1.48
B. 1.50
C. 1.53
D. 1.67

View Answer & Discuss (1) WAEC 2011

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Physics 2011 WAEC Past Questions

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