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BITSAT Practice Test - 19 - JEE MCQ


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30 Questions MCQ Test - BITSAT Practice Test - 19

BITSAT Practice Test - 19 for JEE 2024 is part of JEE preparation. The BITSAT Practice Test - 19 questions and answers have been prepared according to the JEE exam syllabus.The BITSAT Practice Test - 19 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for BITSAT Practice Test - 19 below.
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BITSAT Practice Test - 19 - Question 1
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A radioactive substance has a half-life of 1 year. The fraction of this material, that would remain after 5 years will be

BITSAT Practice Test - 19 - Question 2
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In a purely resistive A.C. circuit, the current

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BITSAT Practice Test - 19 - Question 3
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In Bohr's model, the atomic radius of the first orbit is r₀ then the radius of the third orbit is

BITSAT Practice Test - 19 - Question 4
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Two rods of same material and length have their electric resistance in ratio 1:2. When both rods are dipped in water, the correct statement will be
BITSAT Practice Test - 19 - Question 5
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An electric dipole has the magnitude of its charge as q, and its dipole moment is p. It is placed in a uniform electric field E. If its dipole moment is along the direction of the field, then force acting on it and its potential energy are respectively
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BITSAT Practice Test - 19 - Question 6
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A body of mass 1g and carrying a charge 10−8 C passes from two points P and Q. P and Q are at electric potentials 600V and 0V respectively. The velocity of the body at Q is 20 cms−1 . Its velocity in ms−1 at P is
BITSAT Practice Test - 19 - Question 7
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The resistance of an ammeter is 13 Ω and its scale is graduated for a current upto 100 A. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto 750 A by this meter. The value of shunt resistance is
BITSAT Practice Test - 19 - Question 8
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During X-ray formation if voltage is increased
BITSAT Practice Test - 19 - Question 9
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A metal plate gets heated, when cathode rays against it, due to
BITSAT Practice Test - 19 - Question 10
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A capacitor of capacity C has reactance X. If capacitance and frequency become double, then reactance will be
BITSAT Practice Test - 19 - Question 11
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A car having a mass of 1000 kg is moving at a speed of 30 metres/sec. Brakes are applied to bring the car to rest. If the frictional force between the tyres and the road surface is 5000 newtons, the car will come to rest in
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BITSAT Practice Test - 19 - Question 12
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Time period of revolution of a satellite around a planet of radius R is T. Period of revolution around another planet, whose radius is 3R but having same density is
BITSAT Practice Test - 19 - Question 13
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A body cools from 60oC to 50oC in 10 minutes. If the room temperature is 25oC and assuming Newton's law of cooling to hold good, the temperature of the body at the end of the next 10 minutes will be
BITSAT Practice Test - 19 - Question 14
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Kinetic theory of gases was put forward by
BITSAT Practice Test - 19 - Question 15
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In the moving coil galvanometer the deflection is proportional to
BITSAT Practice Test - 19 - Question 16
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A sphere of radius r is falling in a viscous fluid. The terminal velocity attained by the falling sphere will be proportional to
BITSAT Practice Test - 19 - Question 17
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A uniform plank of Young's modulus Y, is moved over a smooth horizontal surface by a constant horizontal force F. The area of cross-section of plank is A. The compressive strain on the plank in the direction of the force is
BITSAT Practice Test - 19 - Question 18
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An aeroplane is moving with horizontal velocity u at height h. The velocity of a packet dropped from it on the earth's surface will be (g is acceleration due to gravity)
BITSAT Practice Test - 19 - Question 19
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Raindrops are falling from a certain height. Assume all raindrops are spherical and have same drag coefficient. The impact speed of large raindrops compared to that of small raindrops is
BITSAT Practice Test - 19 - Question 20
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In a vibration magnetometer, the time-period of magnets when the identical poles are in the same directon is 3 s. When the polarity of weaker magnet is reversed, the combination makes 15 oscillations per minute. The ratio of magnetic moments of the magnets is
BITSAT Practice Test - 19 - Question 21
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If a cycle wheel of radius 4 m completes one revolution in two seconds. Then acceleration of the cycle will be
BITSAT Practice Test - 19 - Question 22
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A particle covers 50 m distance when projected with an initial speed. On the same surface it will cover a distance, when projected with double the initial speed
BITSAT Practice Test - 19 - Question 23
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The magnifying power of a telescope is m. If focal length of its eye lens is halved, the magnifying power will become
BITSAT Practice Test - 19 - Question 24
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If the force on a rocket moving with a velocity of 300 m/s is 210 N. then the rate of combustion of the fuel is
BITSAT Practice Test - 19 - Question 25
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Two springs of the same material and same length have their tensions in the ratio 4:1 and redil in the ratio 2:1. The ratio of their fundamental frequencies is
BITSAT Practice Test - 19 - Question 26
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If a simple harmonic motion is represented by d2x/dt2 + αx = 0, its time period is
BITSAT Practice Test - 19 - Question 27
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The angle of minimum deviation for an incident light ray on an equilateral prism is equal to its refracting angle. The refractive index of its material is
BITSAT Practice Test - 19 - Question 28
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Two rings of the same radius and mass are placed such that their centres are at a common point and their planes are perpendicular to each other. The moment of inertia of the system about an axis passing through the centre and perpendicular to the plane of one of the rings is (mass of the ring = m and radius= r)
BITSAT Practice Test - 19 - Question 29
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Masses 8, 2, 4, 2 kg are placed at the corners A, B, C, D respectively of a square ABCD of diagonal 80 cm. The distance of centre of mass from A will be
BITSAT Practice Test - 19 - Question 30
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A ring and a disc have the same mass and radius. The ratio of their moment of inertia about their axis is
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BITSAT Practice Test - 19 MCQs with Answers

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