QUES: The assumption that black-body radiation is thermal leads to an accurate prediction: the total amount of emitted energy goes up with the temperature according to a definite rule, the StefanBoltzmann law (187984). But it was also known that the colour of the light given off by a hot object changes with the temperature, so that "white hot" is hotter than "red hot". Nevertheless, Wilhelm Wien discovered the mathematical relationship between the peaks of the curves at different temperatures, by using the principle of adiabatic invariance. At each different temperature, the curve is moved over by Wien's displacement law (1893). Wien also proposed an approximation for the spectrum of the object, which was correct at high frequencies (short wavelength) but not at low frequencies (long wavelength). It still was not clear why the spectrum of a hot object had the form that it has (see diagram).

What characteristic of the light emitted by a hot object changes with temperature?
What is the answer?
ANS: the colour of the light given off
QUES: Hyderabad sits at the junction of three National Highways linking it to six other states: NH-7 runs 2,369 km (1,472 mi) from Varanasi, Uttar Pradesh, in the north to Kanyakumari, Tamil Nadu, in the south; NH-9, runs 841 km (523 mi) east-west between Machilipatnam, Andhra Pradesh, and Pune, Maharashtra; and the 280 km (174 mi) NH-163 links Hyderabad to Bhopalpatnam, Chhattisgarh NH-765 links Hyderabad to Srisailam. Five state highways, SH-1, SH-2, SH-4, SH-5 and SH-6, either start from, or pass through, Hyderabad.:58

How many state highways pass through or begin in Hyderabad?
What is the answer?
ANS: Five
QUES: The Soviet request to join NATO arose in the aftermath of the Berlin Conference of JanuaryFebruary 1954. Soviet foreign minister Molotov made proposals to have Germany reunified and elections for a pan-German government, under conditions of withdrawal of the four powers armies and German neutrality, but all were refused by the other foreign ministers, Dulles (USA), Eden (UK) and Bidault (France). Proposals for the reunification of Germany were nothing new: earlier on 20 March 1952, talks about a German reunification, initiated by the socalled 'Stalin Note', ended after the United Kingdom, France, and the United States insisted that a unified Germany should not be neutral and should be free to join the European Defence Community and rearm. James Dunn (USA), who met in Paris with Eden, Adenauer and Robert Schuman (France), affirmed that "the object should be to avoid discussion with the Russians and to press on the European Defense Community". According to John Gaddis "there was little inclination in Western capitals to explore this offer" from USSR. While historian Rolf Steininger asserts that Adenauer's conviction that "neutralization means sovietization" was the main factor in the rejection of the soviet proposals, Adenauer also feared that unification might have resulted in the end of the CDU's dominance in the Bundestag.

Who made proposals to have Germany dismantled?
What is the answer?
ANS:
unanswerable