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Friday, April 25, 2014

Download JEXPO 2014 solved question physics_chemistry_1

JEXPO 2014 Question And Solution

1. If T and n are the time period and frequency of a simple pendulum respectively, which of the following equation is correct? – A) n x T = 1
2. The working at a hydraulic machine is based upon – C) Pascal’s law
3. 100 gm of water at 60 C is added to 180 gm of water at 95 C. The final temperature of the mixture is – B) 82.5 C
4. Time taken for the sunlight to pass through a window glass of 5 mm thickness is – s. (u glass=1.5)- A) 2.5 x 10^-11
5.  The water equivalent of a body whose mass is m gm and specific heat is s cal g-1C-1 is given by – C) ms cal
6. During total internal reflection, the energy of the incident light – B) is not absorbed by the reflecting 
7. If two wires of resistance 30 ohm and 40 ohm are connected in parallel across a battery the ratio of potential difference – A) 1:1
8. X- rays are produced by impinging --- on a target.- C) electron 
9. If each of the units of force, velocity and frequency are double, how many times has the unit of mass become?- C) Halved
10. A body having a mass 100 gram is allowed to fall freely under the action of gravity. Its kinetic energy after 10 seconds (take g=10 ms-1).- C) 500 Joules
11. The velocity of a body is given by the equation v=6-0.02t, where is the time taken. The body is undergoing- A) uniform retardation
12. Two bodies A and B are said to be in thermal equilibrium with each other if they have same- C) temperature.
13. If body A of mass m1 on collision exerts a force on another body B of mass m2. If the acceleration produced in B is a2, then the acceleration (in magnitude) of A is – A) m2/m1 a2
14. An ant moves from one corner of a hall to the diagonally opposite corner. If the dimensions of the hall are 8m x 6m, the displacement of the ant is – m. – B) 10
15. What is the momentum of a ball that is moving at 6ms-1 and having 96 J of kinetic energy? – C) 32 kg ms-1
16. An engine develops 10 kW power. How much time will it take to lift a mass of 200 kg to a height  of 40m? (take g=10ms-2)  -- D) 8 s
17. A container with a mass of 5 kg is lifted to a height of 8m. How much work is done by the gravitational force (take g=10ms-2)  - B) – 400 J
18. Velocity gradient as “change in velocity per unit distance”. Then its unit in FPS system is – A) foot s-1
19. Sudden fall in the height of mercury column in a barometer forecast – B) storm 
20. An atom of an isotope with a large neutron to proton ratio will probably emit -  B) Beta particle
21. Which of the following isotopes is more likely to be radioactive – D) Ruthenium 101
22. A Newton – meter/sec is a unit of- B) Power
23. The loudness of sound is measured in – D) decibel
24. The unit of electromotive force is – A) volt
25. Three bulbs are connected in a circuit in an identical way. When a fourth bulb is also connected to the same circuit in the same manner, brightness  is reduced then the bulbs are connected in-  A) series 
26. The value of escape velocity on the surface of the earth is – D) 7 miles s-1
27. The device that can be used to detect the presence of current in a circuit is – D) voltmeter
28. How many hours must a 200 watt bulb glow to consume 1 unit of electrical energy?- C) 5
29. The gravitational constant depends upon – D) none of the above
30. If a body starts from rest and moves with uniform acceleration, then – A) v ∞t
31. In the steam engine most of the heat energy is converted into – D) mechanical energy
32. Which of the following is opaque?- C) Mirror
33. When a ray of light passes through a prism – B) the deviation of violet light is maximum.
34. Bats make use of – A) ultrasonic sound
35. When the Earth comes into the umbra and penumbra of the Moon – is formed. – B) total solar eclipse
36. The pitch of the sound is determined by the – of vibration – A) amplitude
37. A hollow sphere is given a charge. The charge resides. – A) on outer surface only
38. Volume of an irregular shaped solid can be measured by using a – C) measuring cylinder
39. The ratio of unit of acceleration and velocity gives dimension of physical quantity – B) frequency
40. A boy dropped a ball from the top of a tower of height 125m then the average velocity of the ball at the end of 5 second if it takes 5 second to reach the ground is – ms-1 – A) 25
41. The sure test of magnetism is – B) repulsion
42. The distance time graph of an object is straight line parallel to the time axis, then the object is – B) in uniform motion 
43. An object moves the 1 st half of the total distance with a speed of 2ms-1. If the average speed of the body is 3ms-1, the speed of the body when it travels the remaining distance is – ms-1 – B) 6
44. The standard meter bar kept at the International Bureau of Weights and Measures near Paris is made up of –  B) Platinum – Iridium 
45. A body moves with an angular speed of 2 pi ms-1 in a circular path of radius 1m, then the time taken to complete one revolution is – s.- A) 1
46. How many angstrom make a meter ? – D) 10-12 A
47. A dielectric is – C) also called a capacity 
48. When a lake stars freezing in severe winter, the ice is formed first – C) at top
49. A plane mirror is not used in a – C) microscope
50. If the angle of inclination of an inclined plane is 30, its mechanical advantage is – B)1/2

Next Part here

JEXPO 2014 Mathematics Solved Paper Here

6 comments:

Unknown said...

55/200 hole gen rank koto hobe?

Unknown said...

If i score 101 in this year jexpo ,what will be my expected rank?

tapas halder said...

Ami 75/200 thk krechi,amr rank kata aste pare?

Unknown said...

Riya tomar expected rank 25,000-30,000 hote pare.
Tamal- You can expect a rank under 10,000 or even better.

Unknown said...

if i score 120 what will be my rank

Unknown said...

Amar 5811 rank esa6a,ami kolkatar modhya kono govt. College pata pari with electrical.