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BITSAT Practice Test - 8 - JEE MCQ


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30 Questions MCQ Test - BITSAT Practice Test - 8

BITSAT Practice Test - 8 for JEE 2024 is part of JEE preparation. The BITSAT Practice Test - 8 questions and answers have been prepared according to the JEE exam syllabus.The BITSAT Practice Test - 8 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for BITSAT Practice Test - 8 below.
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BITSAT Practice Test - 8 - Question 1

In a transformer, the output current and voltage are respectively 4 A and 20 V. If ratio of no. of turns in primary to secondary is 2:1, what is the input current and voltage?

BITSAT Practice Test - 8 - Question 2

What percentage of original radioactive atoms is left after five half lives ?

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BITSAT Practice Test - 8 - Question 3

The hydrogen atom can give spectral lines in the series, Lyman, Balmer and Paschen. Which of the following statements is correct

BITSAT Practice Test - 8 - Question 4
A steady current ι is flowing through a conductor of uniform cross-section. Any segment of the conductor has
BITSAT Practice Test - 8 - Question 5
10 wires (same length, same area, same material)are connected in parallel and each has 1Ω resistance, then the equivalent resistance will be
BITSAT Practice Test - 8 - Question 6
What is the de Broglie wavelength of the α-particle accelerated through a potential difference V
BITSAT Practice Test - 8 - Question 7
The image of the sun is formed on the photosensitive metal with a convex lens and the photoelectric current is I . If the lens is replaced by another similar lens of half the diameter and double the focal length, then photoelectric current will be
BITSAT Practice Test - 8 - Question 8

Two thin wire rings each having a radius R are placed at a distance d apart with their axes coinciding. The charges on the two rings are +q and -q. The potential difference between the centres of the two rings is

BITSAT Practice Test - 8 - Question 9
In an ac circuit, with voltage V and current I the power dissipated is
BITSAT Practice Test - 8 - Question 10
A straight wire of length l and electric dipole moment p is bent to from a semicircle. The new electric dipole moment would be
BITSAT Practice Test - 8 - Question 11

A block of weight 200N is pulled along a rough inclined plane of inclination 45o with the horizontal. If the coefficient of friction is 0.5, the retardation is

BITSAT Practice Test - 8 - Question 12
A particle falls towards earth from infinity. It's velocity on reaching the earth would be
BITSAT Practice Test - 8 - Question 13
On a cold morning, a metal surface will feel colder to touch than a wooden surface because
BITSAT Practice Test - 8 - Question 14

A gas at 27oC has a volume V and pressure P. On heating its pressure is doubled and volume becomes three times. The resulting temperature of the gas will be

BITSAT Practice Test - 8 - Question 15
S.I unit of magnetic flux is
BITSAT Practice Test - 8 - Question 16
In a cycltron the angular frequency of the charged particle is independent of the
BITSAT Practice Test - 8 - Question 17

The surface tension of soap solution is 25*10⁻3 N-m⁻1. The excess pressure inside a soap bubble of diameter 1 cm is

BITSAT Practice Test - 8 - Question 18
The rate of flow of water in a capillary tube of length 'l' and radius 'r' is 'V'. The rate of flow in another capillary tube of length '2l' and radius '2r' for same pressure difference would be
BITSAT Practice Test - 8 - Question 19

A copper wire of length 4 m and area of cross-section 1.2 cm2 is stretched with a force of 4.8 * 103 N. If the Young's modulus for copper is 1.2 * 1011 N-m⁻2, then increase in the length of the wire will be

BITSAT Practice Test - 8 - Question 20

A stone is dropped from rest from the top of a tower 19.6 m high. The distance travelled during the last second of its fall is (given g = 9.8 m/s2)

BITSAT Practice Test - 8 - Question 21
An aeroplane is flying at a constant horizontal velocity of 600 km/hr at an elevation of 6 km towards a point directly above the target on the earth's surface. At an appropeiate time, the pilot releases a ball so that it strikes the target at the earth. The ball will appear to be falling
BITSAT Practice Test - 8 - Question 22

A weightless thread can bear tension upto 37 N. A stone of mass 500 g is tied to it and revolved in a circular path of radius 4 m in a vertical plane. If g = 10 m−s⁻2, then the maximum angular velocity of the stone will be

BITSAT Practice Test - 8 - Question 23
The ratio of the weight of a man in a stationary lift and when it is moving downward with uniform acceleration 'a' is 3:2. The value of 'a' is (g-Acceleration due to gravity of the earth)
BITSAT Practice Test - 8 - Question 24
The hypermetropia is a
BITSAT Practice Test - 8 - Question 25
On a planet, a body takes 2 s to reach the surface when dropped from a height of 8 m. The time period of a simple pendulum of length 1 m on that planet is
BITSAT Practice Test - 8 - Question 26
A simple pendulum of length l has a bob of mass m, with a charge q on it. A vertical sheet of charge, with surface charge density σ passes through the point of suspension. At equilibrium, the spring makes an angle θ with the vertical. its time period oscillations is T in this poisiton. Then
BITSAT Practice Test - 8 - Question 27
Which of the following is correct concerning rainbow ?
BITSAT Practice Test - 8 - Question 28
A body rolls down an inclined plane. If its K.E. of rotational motion is 40% of its K.E. of translation, then the body is
BITSAT Practice Test - 8 - Question 29
If I, α and τ are the moment of inertia, angular acceleration and torque respectively of a body rotating about any axis with angular velocity ω, then
BITSAT Practice Test - 8 - Question 30

A fan is making 600 rev-min⁻1. If it makes 1200 rev-m⁻1, then increase in its angular velocity is

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