IUT ইসলামিক ইউনিভার্সিটি অব টেকনোলজি ভর্তি পরীক্ষা ২০১৭-২০১৮

With two slits spaced d=0.2 mm apart, and a screen at a distance D=1 m, the third bright fringe is found to be displaced x=7.5 mm from the central fringe.What is wavelength, λ Of the light used?

Two charges of  +1μcand−1μc + 1 \mu c \quad\text{and}\quad - 1 \mu c are placed at the corners of the base of an equilateral triangle. The length of a side of the triangle is 0.7 m.Find the electric field intensity at the apex of the triangle? [K=9×109Nm2c2] \left [ K = 9 × 10^{9} N \frac{m^{2}}{c^{2}} \right ]

A 25 N block is held at rest on a frictionless incline by a force that is parallel  to the incline. If the incline is 25° above the horizontal the magnitude of the applied force is:

The weight of an object on the Moon is one sixth of its weight on Earth. The ratio of the kinetic energy of a body on Earth moving with speed V to that of same body moving with speed V on the Moon is:

An electron is released from the rest at one point in a uniform electric field and moves a distance of 10 cm in 10-1 s. What is the voltage between the two points?

Three devices are connected in parallel to a 12 V battery. Let the resistance of the devices be R₁ =2Ω , R₂ = 3Ω and R3= 4Ω. What is the supplied current by the battery?

Let, C₁ = 6 μF \mu F , C₂ = 3 μF \mu F   andVab V_{a b} = 18V. What is the value of equivalent capacitance in series connection?

How many nuclei are there in 1 kg aluminum?
(Atomic mass of aluminum-26.98153 amu, 1 amu 1.66×10−27 1.66 × 10^{- 27} kg)

A photon of wave length λ\lambda= 0.400 nm strikes an electron at rest and rebounds at an angle of 150° to its original direction. Find the wavelength of the photon after the collision. (h= 6.63 ×10−34J−s)\times 10^{- 34} J - s ) )

Two discs A and B are mounted coaxially on a vertical axle. The discs have moments of inertia I and 21, respectively about the common axis. Disc A is imparted an initial angular velocity  2ω 2 \omega using the entire potential energy of a spring compressed by a distance x1. Disc B is imparted an angular velocity  ω \omega   by a spring having the same spring constant and compressed by a distance x2. Both the discs rotate in the clockwise direction. The ratio of   x1x2 \frac{x_{1}}{x_{2}}  is-

The displacement of a particle varies according to the relation x = 4 (cosπt + sinπt). The amplitude of the  particle is-

A real gas is changed slowly state 1 to state 2. During this process no work is done on or by the gas. This process must be

A Carnot heat engine operate between a hot reservoir at absolute temperature TH T_{H}   and a cold reservoir at absolute temperature Tc T_{c} . Its efficiency is

A small object has charge Q. Charge q is removed from it and placed on a second small object. The two objects are placed 1 m apart. For the force that each object exerts on the other to be a maximum, q should be :-

A physics instructor is anteroom charges an electrostatic generator to 25   μC \mu C ,  then carries it into the lecture hall. The net electric flux in Nm2C-1 through the lecture hall wall is --

An observer is moving with a velocity of 0.95 C in a direction perpendicular to a rod of length L. The observer will measure the length of the rod to be --

A boy jogs around a horizontal circle with a constant speed. He travels one fourth of a revolution, a distance of  25 m along the circumstances of the circle, in 5 s.The magnitude of his acceleration is.

A lense is used to produce sharp image in a screen.When the right half of the lense is covered with on opaque material,how will image be affected?The right half of the image will disappearThe left half of the image will disappearThe image size will become approximately 1/2 of the Original sizeThe image brightness  will become approximately 1/2 of the Original size

A horizontal shove of at least 200 N is required to start moving a 800N object initially at rest on a horizontal floor.The coefficient of static friction is:

An observer moves towards a stationary source of sound, with a velocity one-fifth of the velocity of sound.What is the percentage increase in the apparent frequency?

Two closed organ pipe sounded simultaneously give 5 beats per second between the fundamentals. If the shorter pipe is 1.1 m, find the length L, of the longer pipe. (Speed of sound in air 340 m/s)

A certain farsighted person has a minimum distance of distinct vision of 150 cm. He wishes to read clearly at distance of 25 cm.  What focal length glasses should he used and what is the type of the lens ?

In the following figure, M and N are the midpoints of two of the sides of square ABCD what is the area of the shaded region?

নিচের কোনটি আইসোইলেক্ট্রন এর উদাহারণ________।

Which is the strongest oxidizing agent of the following ?

Which of the following sentence is not true?

In IR spectra, the stretching frequency of carboxylic -OH group arise at --

At 11°C temperature and 749 mm pressure, the weight of a gaseous hydrocarbon is 0.11 mm. If in that compound, there is 85.71% Carbon, then what is its molecular formula?  (volume = 46.43 mL ; molecular weight =56)

Which is incorrect?

The Lewis structure for the compound series ketone is-

What is the formation enthalpy of sugar?  If the combustion enthalpy of carbon,  hydrogen,and sugar are -406 KJ,  -284 KJ and -5638.82 KJ respectively.

Butane molecule is converted to 2-methyl propane by Isomerisation in the presence of the following environment.

Concentrated H2O2 solution is used as oxidant in rocket fuel and diluted H2O2 solution is used as hair bleach.  A 30% H2O2 (w/w) aqueous solution has density 1.11 gm/mL.  What is the molarity and mole fraction of the H2O2 solution ?

Temporary hardness of water is caused due to the presence of which compounds in water ?

All of the following are the true statements concerning reaction orders except :

An exothermic reaction is at equilibrium. If temperature is increased,  which of the following will take place?

Which one of the following is used to form a salt bridge in electrochemical cell ?

To what volume must a litre of oxygen be expanded if the moliculesper unit volume is 12.0×1011 cm−3 12.0 \times 10^{11} \mathrm{~cm}^{-3} ? Diameter of the oxygen molicule=3A A∘ A^{\circ} . Assume that the gas starts at STP. (R=8.3×107 \left(\mathbf{R}=8.3 \times 10^{7}\right. dynes. cm.mole−1k−1N0=6.02×1023mole−1) \left.\mathbf{c m} . \mathbf{m o l e}^{-1} \mathbf{k}^{-1} N_{0}=6.02 \times 10^{23} \mathbf{m o l e}^{-1}\right)

Which of the following electromagnetic has photons with the greatest energy ?