48.6°
19.5°
20.0
45.0
Correct answer is A
Given that refractive index = 1.5, angle of incidence = 30°, angle of refraction =?
using snell's law = refractive index = \(\frac{sini}{sinr}\)
=\(\frac{1}{n } = \frac{sin30}{sinr}\)
= \(sinr = 1.5\times sin 30\)
r = \(sin^10.75\)
= 48.6°
this is because ray is traveling from a more denser medium to a less dense medium
Public opinion on the performance of a government is best measured by
military strength
general elections
the mass media
parliamentary debates
Correct answer is C
Public opinion is measured by election results, personal contacts, media reporting, and especially by polls. but most importantly by mass media report
The anomalous expansion of water occurs in the range
0 °C to 100 °C
0 °C to 4 °C
4 °C to 100 C
-4 °C to 0 °C
Correct answer is B
No explanation has been provided for this answer.
Public opinion is defined as the
aggregate views of the people
sentiments of opposition parties
consensus of the mass media
reaction of pressure groups
Correct answer is A
Public opinion consists of the desires, wants and thinking of the majority of the people. It is the collective opinion of the people of a society or state on an issue or problem. This concept came about through the process of urbanization and other political and social forces.
Which of the following is a function of pressure groups?
Represent and protect the rich
Protect the interest of government
Serve as avenue for political victimization
Provide forum for the ventilation of grievances
Correct answer is D
Pressure groups are a vital link between the government and the governed. They keep governments more responsive to the wishes of the community, especially in between elections. 2. Pressure groups are able to express the views of minority groups in the community who might not otherwise receive a hearing.