IUT ইসলামিক ইউনিভার্সিটি অব টেকনোলজি ভর্তি পরীক্ষা ২০১৮-২০১৯

Water has the specific heat 4.186 kJ/kg0C, a boiling point of 100°C, and a heat of vaporization of 2260kJ/kg. A sealed beaker contains 100g of water that is initially at 200C. How much heat is required to bring the water to its boiling point?

Which of the following best approximates the energy of a photon whose wave length is 2.0 x 10-9 m?
[Planck's constant, h, has a value of 6.6 x 10-34 Js]

A particle is moving from rest in uniform acceleration. It travels a distance 'X' in the first two seconds and distance 'Y' in the next two seconds, then-

Ali has a weight of 100N. What is his weight in a roller coaster moving downwards with acceleration a= 0.3g? [Here, g=9.8 ms-2]

A Carnot engine whose sink is at 300 K has an efficiency of 40%. By how much should the temperature of source be increased, so as to increase its efficiency by 50% of original efficiency?

Object 1 moves toward object 2, whose mass is twice that of object 1 and which is initially at rest After their impact, the objects lock together and move with what fraction of object 1's initial kinetic energy?

The half-life of one isotope of radium is about 1600 years. In a given sample of this isotope, 15/16 of the radium atoms will decay in a time most nearly equal to-

lce, which has a temperature of 0°C, is added to 500 gm of water that has a temperature of 100°C. Ice is continually added to the system until it has all melted and no more ice will melt. What is the temperature of the water in the system?

Two objects, mass of an object is 3 kg which is moving with a speed of 2m/s and the mass of other is 5 kg and speed is 2m/s, move toward each other and collide head-on. If the collision is perfectly inelastic, find the speed of the objects after the collision.

In a common emitter configuration of n-p-n transistor the base current is 5% of the emitter current. Find out the current amplification factor(β)\left(\beta\right)and the current gain(α)\left(\alpha\right).

A total charge of 7.5 x 10-6C is distributed on two different small metal spheres. When the spheres are 6.0cm apart, they feel a repulsive force of 20.0 N. How much charge is in each sphere?

A total of 100 J of energy is supplied to a machine. The machine is then capable of displacing a 30 N object to 1.5m. What is the approximate efficiency of the machine?

A 60 kg student goes on a ride at an amusement park that spins quickly. Then the floor drops out. If the ride has a radius of 2.5m and makes 10 revolutions in 32.3 s, what is the centripetal force acting on the student?

A river flows toward the east. You head your boat 530 west of north and achieve a velocity of 6.0 m/s due north relative to the shore. What is your speed relative to the water?

F⃗=(−2i^+3j^+4k^)N \vec{F} = \left ( - 2 \hat{i} + 3 \hat{j} + 4 \hat{k} \right ) N force applied on a particle and the particle moves fromm (3,-4,-2) to (-2,3,5). What is the amount of work done?

A 91 kg man's thighbone has a relaxed length of 0.50m, a cross-sectional area of 7.0x10-4 m² and a young's modulus of 1.1 x 1011 N/m². By how much does the thighbone compress when the man is standing on both feet?

Resistors R₁=5Ω and R₂=10 Ω are connected in series to a voltage source E= 60V. What is the ratio between the power dissipation in R2 and the power dissipation in R1?

A galvanometer with internal resistance of 100 Ω can measure 100 μA at fall deflection. What resistance must be connected in parallel to it to make it an ammeter that can measure up to 100 A.

Two identical capacitors are arranged in a circuit. What is the ratio of the energy stored when the capacitors are in series and when they are in parallel with 12 V DC source?

Which of the followings is true of the magnetic field produced by a current in a long-straight wire?

The object is placed 60 cm from a spherical convex mirror. If the mirror forms a virtual image 20 cm from the mirror. what is magnitude of the mirror's radius of curvature?

The image created by a converging lens is projected onto a screen that is 60 cm from the lens. If the height of the image is 1/4 of the height of the object, what is the focal length of the lens?

The velocity of a particle of charge +4.0 x 10-9 C and mass 2 x 10-4 kg is perpendicular to a 0.1-teala magnetic field. If the particle's speed is 3x104m/s, what is the acceleration of this particle due to the magnetic force?

Due to the magnetic force, a positively charged particle executes uniform circular motion within a uniform magnetic field, B. If the charge is q and the radius of its path is r, which of the following expressions gives the magnitude of the particle's linear momentum?

A train at rest has a length of 100m. At what speed must it approach a tunnel of length 80m so that an observer at rest with respect to the tunnel will see that the entire main is in the tunnel one time?

A washing machine, staring from rest, accelerates within 3.14s to a point where it is rovolving at a frequency of 2.00 Hz. Its angular acceleration is mostly near to-

In a mechanical workshop there are 5 grinding machines installed over the circumference of a cricle of radis 5m. When one machine is running, a listener at the center hears sound with 90 dB intensity. When all the machines are rumming simultaneously, what would be the sound intensity felt by the same listener?

The displacement of a moving particle is given by the equation x = 3t3 + 5t2 + 4t m. What is the acceleration of the particle at t = 2s?

A change of current from 2.0 A to 2.5A in 2 seconds induces 10 mV between the terminals of the coil. What is the co-efficient of self-induction of this coil?

A soccer ball, at rest on the ground, is kicked with an initial velocity of 10 m/s at a launch angle of 30o. Calculate its total flight time, asuming that air resistance is negligible.

A trafemer has 50 turns in the primary winding and 100 turns in the secondary. An electrical lamp that takes 0.5 A of current is connected to its secondary. What is the current at the primary of the transformer?

Which one of the followings precipitated hydroxides is not green?

The activation energy of molecules of a reaction is 50 kJ/mol. If the temperature of the reaction increases from 27°C to 37°C, what is the change of the rate of reaction (RR)?

In a synthesis of ammonia using Haber-Bosch process, an increase in pressure should-

DNA absorption has a peak at-

Which one is false?

At a temperature of 30°C and 1.5 atmospheric pressure, di-nitrogen tetraoxide(N₂04) was dissociated to 20% nitrogen dioxide. The value of Kp for the process is-

Which on of the following properties is not the general property of p-block element?

What is the main product of the following reaction?  CH2=CH2+KMnO4→H2O C H_{2} = C H_{2} + K M n O_{4} \overset{H_{2} O}{\to}

C₂H5OH is oxidized to produce Z, Z reacts with C₂H5OH to produce an ester. What is Z?

Which one of the following groups will not create a negative mesomeric effect if attached to a benzene ring?

Atomic mass of Na and Ca are 23 and 40, respectively. Equal amount of electricity is passed through NaCl and CaCl₂ solution. What amount of Ca will be deposited if 2.3 gm of Na is deposited on cathode.

A tube-well water was sampled for the presence of arsenic. It was found that 0.015 mg of arsenic was present in 500 mL of the tube-well water. The concentration of arsenic in the tube-well water was-

A sample of sea water has an OH- concentration of 1.58 x 10-4M. The pH of the sea water is-