1)lead crystallises in fcc structure and its interatomic distance is 3.52 angstrom.how many atoms are there in square mm in (100) plane? 2)the nearly constant value of BE/A shows what nature of nuclear force.a)nucleons depend on its just nearest neighboursb)charge dependence of nuclear force c) charge independence of nuclear force d)none 3)a proton and alpha particle travel in a field having constant potential difference .Calculate the ratio of debroglie wavelengths of proton to alpha particle. 4)diagram(graph) of carnot cycle in TS diagram or space.

1)If x and y are non zero real numbers, then x2+xy+y2 is ... a) always positive b)may be negative or positive, 2)if p and q are prime no.s the no of divisors of p2q3 is...

1) what is the vector potential inside a solenoid with n turns/unit length and current I.

2) what is the value of {integral over closed loop c} (z+1)/(3z^2-2z^2-z) when c is an unit circle about origin.

3) two events are separated by 5km and 5 microseconds. an observer moving with v along the line joining the two events observes that the events take place simultaneously. what is v ?

4)particle X of mass M at rest disintegrates into a particle of mass m and a massless particle. energy of m is given by ?

x^2+x*y+y^2 ; where x,y are non-zero real then it is a)Always negative b) Always positive c)Sometimes negative sometimes positive d)None of the above Ans. (b)

Hi, This is Nirma.. I've sent some questions asked in JEST 2010..Will post some more questions soon..

1) X and y are non zero real numbers then the values of x2 + xy + y2 are

Always positive, sometimes positive and negative, always negative, none of these.

2) The value of Lim Re (z2) + Im (z2) / z2 Z tends to 0

Is 1, -1, -i, limit does not exist..

3)A man measures a distance of 50 meters with a stick of 1m length. The man repeats the measurement for 50 times to cover the 50 meters length. In each measurement the values lies between 99.8cm and 100.2 and not beyond this limits. Calculate the error in measurement.

0.82cm, 0.20cm, 10.0cm, 0.40cm.

4) A small moon is rotating around the planet. The astronomer measures the minimum and maximum distance of the moon from the planet and measures the speed of the moon. Using the above data, which of the following is not able to calculate?

Mass of the planet, semi major axis, period of the orbit, velocity of the moon.

5) The ground state spin and parity of 12C and 17O are

0+ and 5/2+ , 0+ and 5/2- , 2+ and 7/2+ , 0+ and 7/2+

6) If p and q are distinct prime numbers, then the number of divisors for p2q3 is

4, 8, 15, 6.

7) The equivalent capacitance for the following circuit is

8) A mass m is suspended from one end of the spring and the other end is suspended by another mass m. Both the masses move in vertical direction. The two modes of vibration will be

Equal, unequal, √5 +1 and √5 – 1

9) The ratio of de Broglie wavelength of the helium and a proton accelerated at same potential will be

1:2, 2:1, 2√2:1

10) If 2n-1 is a prime number, then n is

a) a composite number b) an odd number c) necessarily prime number, d) necessarily composite number.

1)lead crystallises in fcc structure and its interatomic distance is 3.52 angstrom.how many atoms are there in square mm in (100) plane?

2)the nearly constant value of BE/A shows what nature of nuclear force.a)nucleons depend on its just nearest neighboursb)charge dependence of nuclear force c) charge independence of nuclear force d)none

3)a proton and alpha particle travel in a field having constant potential difference .Calculate the ratio of debroglie wavelengths of proton to alpha particle.

4)diagram(graph) of carnot cycle in TS diagram or space.