11.Identify the particle physicist through the clues given below:
1.He won the Nobel Prize in Physics for the year 2013 along with Francois Englert

2.He won the Royal Society's Copley medal on 20,July 2015

12.Match List 1 with List 2 and answer through the codes given below:
List 1 List 2

a)Infrared spectro-meter 1.Measure the purity of sugar

b)Polarimeter 2.Test aeroplane surface under stress

c)Barometer 3.Study the molecular structure

d)Strain gauge 4.Measure atmospheric pressure

a b c d

13.A sum of Rs.800 amounts to Rs.920 in 3 years at a simple interest.If the interest rate is increased by 3%.What would Rs.800 amount to?

14.A sum of Rs.1,500 was lent partly at 5% and partly at 8% per annum at simple interest.The total interest received after 3 years was Rs.300.The ratio of the money lent at 5% to that lent at 8% is

15.#Q If x²+4y²=4xy,then x:y is #Q If x²+4y²=4xy,then x:y is