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SRMJEE Mock Test (Med) - 4 - JEE MCQ


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30 Questions MCQ Test - SRMJEE Mock Test (Med) - 4

SRMJEE Mock Test (Med) - 4 for JEE 2024 is part of JEE preparation. The SRMJEE Mock Test (Med) - 4 questions and answers have been prepared according to the JEE exam syllabus.The SRMJEE Mock Test (Med) - 4 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for SRMJEE Mock Test (Med) - 4 below.
Solutions of SRMJEE Mock Test (Med) - 4 questions in English are available as part of our course for JEE & SRMJEE Mock Test (Med) - 4 solutions in Hindi for JEE course. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free. Attempt SRMJEE Mock Test (Med) - 4 | 105 questions in 150 minutes | Mock test for JEE preparation | Free important questions MCQ to study for JEE Exam | Download free PDF with solutions
SRMJEE Mock Test (Med) - 4 - Question 1
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What will be the phase difference between virtual voltage and virtual current, when the current in the circuit is wattless

SRMJEE Mock Test (Med) - 4 - Question 2
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Isotopes are atoms having

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SRMJEE Mock Test (Med) - 4 - Question 3
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The resonant frequency of a circuit is f. If the capacitance is made 4 times the initial value, then the resonant frequency will becomes

Detailed Solution for SRMJEE Mock Test (Med) - 4 - Question 3

f = 2π/√LC
∴ f' = 2π/√4LC = 1/2 x 2π/√LC = f/2

SRMJEE Mock Test (Med) - 4 - Question 4
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A body is moving in a circular path with a constant speed. It has
SRMJEE Mock Test (Med) - 4 - Question 5
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In an inelastic collision between two bodies, the physical quantity that is conserved
SRMJEE Mock Test (Med) - 4 - Question 6
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The length of a given cylindrical wire is increased by 100%. Due to the consequent decrease in diameter the change in the resistance of the wire will be
Detailed Solution for SRMJEE Mock Test (Med) - 4 - Question 6

Since the volume will remain the same
And the wire is in the form of a cylinder
πr12l1 = πr22l2
so there fore
r12l1 = r22l2
so on l1 is the initial length, which is streched n times to the final length
l1 = l,,,,, l2 = nl
on substituing the values

R2 = n2R
Here in this question the value of n will be 2 as the length is increased by on substituing the value
R2 = 4R
Which is a 300% increase

SRMJEE Mock Test (Med) - 4 - Question 7
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The ratio of the lengths of two wires A and B of same material is 1:2 and the ratio of their diameter is 2:1. They are stretched by the same force, then the ratio of increase in length will be
SRMJEE Mock Test (Med) - 4 - Question 8
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Photons of energy 6eV are incident on a metal surface whose work function is 4eV. The minimum kinetic energy of the emitted photoelectrons will be
Detailed Solution for SRMJEE Mock Test (Med) - 4 - Question 8

Minimum kinetic energy is always zero.

SRMJEE Mock Test (Med) - 4 - Question 9
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Consider the following statement for a bridge type rectifier
1. Centre tap is not required for the secondary of the transformer.
2. The output will be half wave rectification if one of the diodes of the bridge circuit gets open circuited.
3. The bridge requires four diodes
4. If one of the diodes gets short circuited, the transformer will be short circuited.
Which of the above statements are correct?
SRMJEE Mock Test (Med) - 4 - Question 10
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Two electric charge 12 μ C and − 6 μ C are places 20 cm apart in air. There will be a point P at which electric potential is zero on the line joining these two charges and outside, excluding the region between them. The distance of P from − 6 μ C charge is
SRMJEE Mock Test (Med) - 4 - Question 11
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On the horizontal surface of a truck (μ=0.6), a block of mass 1 kg is placed.If the truck is accelerating at the rate of 5 m/sec2 then frictional force on the block will be
SRMJEE Mock Test (Med) - 4 - Question 12
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The mass of the moon is about 1.2% of the mass of the earth. Compared to the gravitational force the earth exerts on the moon, the gravitational force the moon exerts on earth
SRMJEE Mock Test (Med) - 4 - Question 13
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The maximum wavelength of radiation emitted at 2000 K is 4 μm. What will be the maximum wavelength of radiation emitted at 2400 K?
SRMJEE Mock Test (Med) - 4 - Question 14
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If pressure of a gas contained in a closed vessel is increased by 0.4% when heated by 1oC, the initial temperture must be
SRMJEE Mock Test (Med) - 4 - Question 15
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A lift is moving down with an acceleration a. A man in the drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift, and a man standing stationary on the ground are respectively
SRMJEE Mock Test (Med) - 4 - Question 16
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The coil of a moving coil galvanometer is wound over a metal frame in order to
SRMJEE Mock Test (Med) - 4 - Question 17
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The domain formation is a necessary feature of
SRMJEE Mock Test (Med) - 4 - Question 18
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The change in surface energy, when a drop of surface tension T and radius of R splits into 1000 droplets of radius r, is
SRMJEE Mock Test (Med) - 4 - Question 19
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A car accelerated from initial position and then returned at initial point, then
SRMJEE Mock Test (Med) - 4 - Question 20
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The general motion in three dimensions may be
SRMJEE Mock Test (Med) - 4 - Question 21
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A person of 70kg mass is lifted by a helicopter with the help of rope hanging from it. If the helicopter is rising with an acceleration of 4 ms-2, the tension in the rope is (g=10 ms-2)
SRMJEE Mock Test (Med) - 4 - Question 22
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The force constant of two springs are k1 and k2 respectively. Both are stretched till their potential energies are equal. The forces f1 and f2 applied on them are in the ratio
Detailed Solution for SRMJEE Mock Test (Med) - 4 - Question 22

Potential energy of spring u = 1/2 = kx2
k = force constant, x = increase in length
u1 = 1/2 k1x12
u2 = 1/2 k2x22
According to question
u1 = u2
1/2 k1x12 = 1/2 k2x22

SRMJEE Mock Test (Med) - 4 - Question 23
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A ball is projected upwards from the top of tower with a velocity 50 ms-1 making an angle 30owith the horizontal. The height of the tower is 70 m. After how many seconds from the instant of throwing will the ball reach the ground?
SRMJEE Mock Test (Med) - 4 - Question 24
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In a streamline flows if the gravitational head is h. The kinetic and pressure heads are
SRMJEE Mock Test (Med) - 4 - Question 25
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While viewing a distant object with a telescope, suddenly a housefly sits on objective lens. The correct statement is that
SRMJEE Mock Test (Med) - 4 - Question 26
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The moment of Inertia of a solid cylinder of mass M and radius R about a line parallel to the axis of the cylinder but lying on the surface of the cylinder is
SRMJEE Mock Test (Med) - 4 - Question 27
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The density of a cube is measured by measuring its mass and length of its sides. If the maximum error in the measurement of mass and length are 4% and 3% respectively, then the maximum error in the measurement of density would be
SRMJEE Mock Test (Med) - 4 - Question 28
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Small droplets of a liquid are usually more spherical in shape than larger drops of the same liquid because
SRMJEE Mock Test (Med) - 4 - Question 29
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If the cold junction of thermocouple is lowered, then the neutral temperature
SRMJEE Mock Test (Med) - 4 - Question 30
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A vessel is filled with an ideal gas at a pressure of 20 atm and is at a temperature of 27 oC . One half of the mass is removed from the vessel and the temperature of the remaining gas is increased to 87 oC . At this temperature the pressure of the gas will be ...
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