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1. The ground state energy of hydrogen atom is – 13.6 eV. The kinetic and potential energies of the electron in this state are

a) 13.6 eV and 27.2 eV respectively

b) 13.6 eV and 27.2 eV respectively

c) 13.6 eV and 27.2 eV respectively

d) 27.2 eV and 13.6 eV

4. “Uncle” said Luke to the old Sean “You seem to be well fed, though I know no one looks after you. Nor have I seen you leave your residence at any time. Tell me how you manage it?” “Because” Sean replied, “I have a good feed every night at Emperor’s orchard. After dark, I go there myself and pick out enough fruits to last a fortnight.” Luke proposed to accompany his uncle to the orchard. Though reluctant because of Luke’s habit of euphoric exhibition of extreme excitement, Sean agreed to take him along. At the orchard while Sean hurriedly collected the fruits and left, Luke on the other hand at the sight of unlimited supply of fruits was excited and lifted his voice which brought Emperor’s men immediately to his side. They seized him and mistook him as the sole cause of damage to the orchard. Although Luke reiterated that he was a bird of passage, they pounded him mercilessly before setting him free. What does “bird of passage”; mean in the context of the given passage?

a) There was a bird in the orchard

b) Other people stole from the orchard

c) Emperor knew him personally

d) He did not visit orchard regularly

7. The order and the degree of the differential equation of all ellipses with centre at the origin, major axis along x-axis and eccentricity √3/2 are, respectively :

a) 2,1

b) 1.2

c) 2.2

d) 1,1

10. The radius of the second Bohr orbit for hydrogen atom is : (Planck’s Const. h=6.6262×10-34 Js; mass of electron=9.1091×10-31 kg; charge of electron e=1.60210×10-19 C; permittivity of vacuum e0=8.854185×10-12 kg-1m-3A2)

a) 4.76 Å

b) 0.529 Å

c) 2.12 Å

d) 1.65 Å

11. The most abundant elements by mass in the body of a healthy human adult are : Oxygen (61.4%); Carbon (22.9%), Hydrogen (10.0%); and Nitrogen (2.6%). The weight which a 75 kg person would gain if all 1H atoms are replaced by 2H atoms is :

a) 37.5kg

b) 7.5kg

c) 10kg

d) 15kg

12. Directions: In each of the question below are given three statements followed by three conclusions numbered I, II and III. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: Some carrots are brinjals. Some brinjals are apples. All apples are bananas. Conclusions: I. some apples are carrots. II. Some bananas are brinjals. III. Some bananas are carrots

a) Only I follows

b) Only II follows

c) Only III follows

d) Only either II or III follow

13. 46.The dominant mechanisms for motion of charge carriers in forward and reverse biased silicon P-N junctions are

a) Drift in forward bias, diffusion in reverse bias

b) Diffusion in forward bias, drift in reverse bias

c) Diffusion in both forward and reverse bias

d) Drift in both forward and reverse bias

23. Two droplets merge with each other and forms a large droplet. In this process

a) Energy is liberated

b) Energy is absorbed

c) Neither liberated nor absorbed

d) Some mass is converted into energy

24. Of the four numbers, whose average is 60, the first is one-fourth of the sum of the last three. The second number is one-third of the sum of other three, and the third is half of the other three. Find the fourth number.

a) 52

b) 48

c) 80

d) 60

27. A length of wire carries a steady current. It is bent first to form a circular plane coil of one turn. The same length is now bent more sharply to give a double loop of smaller radius. The magnetic field produced at the centre produced by same current is:

a) unaltered

b) a half of its initial value

c) a quarter of its initial value

d) four times of its first value

Conference