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JEE Main Physics Mock Test- 5 - JEE MCQ


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25 Questions MCQ Test Mock Tests for JEE Main and Advanced 2025 - JEE Main Physics Mock Test- 5

JEE Main Physics Mock Test- 5 for JEE 2024 is part of Mock Tests for JEE Main and Advanced 2025 preparation. The JEE Main Physics Mock Test- 5 questions and answers have been prepared according to the JEE exam syllabus.The JEE Main Physics Mock Test- 5 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for JEE Main Physics Mock Test- 5 below.
Solutions of JEE Main Physics Mock Test- 5 questions in English are available as part of our Mock Tests for JEE Main and Advanced 2025 for JEE & JEE Main Physics Mock Test- 5 solutions in Hindi for Mock Tests for JEE Main and Advanced 2025 course. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free. Attempt JEE Main Physics Mock Test- 5 | 25 questions in 60 minutes | Mock test for JEE preparation | Free important questions MCQ to study Mock Tests for JEE Main and Advanced 2025 for JEE Exam | Download free PDF with solutions
JEE Main Physics Mock Test- 5 - Question 1
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Emission of electrons in the photoelectric effect is possible, if

Detailed Solution for JEE Main Physics Mock Test- 5 - Question 1
The wavelength should be low because lower the wavelength higher the frequency and for photo electric effect to occur we need a threshold frequency.
JEE Main Physics Mock Test- 5 - Question 2
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The de-Broglie wavelength is proportional to

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JEE Main Physics Mock Test- 5 - Question 3
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The acceleration due to gravity at a height 1/10th of the radius of the earth above the earth's surface is 8.2 m-s⁻1 Its value at a point at the same distance below the surface of the earth is

JEE Main Physics Mock Test- 5 - Question 4
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According to Hooke's law of elasticity, if stress is increased, the ratio of stress to strain
JEE Main Physics Mock Test- 5 - Question 5
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A 5 μ F capacitor is fully charged across a 12V battery. It is then disconnected from the battery and connected to an uncharged capacitor. If the voltage across the capacitor becomes 3V, the capacitance of the uncharged capacitor is
Detailed Solution for JEE Main Physics Mock Test- 5 - Question 5
C1 * V1 = Q1. [Eq. 1]
Where, C1 = 5uF, V1= 12V.
This means capacitor 1 is able to gather up to 60uC of charge; before the circuit reaches voltage equilibrium and no more current flow is possible.
Now we transfer this bank of charge to another circuit with an uncharged capacitor, C2, which absorbs enough charge and leaves the circuit in equilibrium at 3V.
i.e. V2 = 3V
At 3V C1 can retain a charge of 15uC [using Eq. 1]. This means C2 most possess the remaining 45uC[Q2] of charge; at 3V[V2].
C2 = Q2/V2
C2= 45uC/3V
C2= 15uF
JEE Main Physics Mock Test- 5 - Question 6
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If the error in the measurment of radius of a sphere is 2% , then the error in the determination of volume of the sphere will be
JEE Main Physics Mock Test- 5 - Question 7
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The volume of a gas will be double of what it is at 0oC (pressure remaining constant) at
JEE Main Physics Mock Test- 5 - Question 8
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An L.C. circuit contains 10 mH inductor and a 25 μ F capacitor. The resistance of the circuit is negligible. The energy stored in the circuit is completely magnetic at time (in milli seconds) being measured from the instant when the circuit is closed
Detailed Solution for JEE Main Physics Mock Test- 5 - Question 8

When R is negigible,

Therefore, t = 1.57, 4.71, 7.85 ... milli sec

JEE Main Physics Mock Test- 5 - Question 9
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The electric potential at any point (x,y,z) in a space is given by: V=4x2 volt. The electric field at (1,0,2) m in space is
Detailed Solution for JEE Main Physics Mock Test- 5 - Question 9

Magnitude of electric field at the point (1m, 0, 2m) = − 8 V ∕ m

JEE Main Physics Mock Test- 5 - Question 10
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The horizontal range of a projectile is R, when the angle of projection is 30o. The value of another angle of projection, for the same range, is
JEE Main Physics Mock Test- 5 - Question 11
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The first atomic reactor was constructed by
JEE Main Physics Mock Test- 5 - Question 12
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): A changing magnetic field acts as a source of electric field known as induced electric field.
Reason(R): Induced electric field can be produced by any static charge distribution.
Detailed Solution for JEE Main Physics Mock Test- 5 - Question 12
A charged particle moving without acceleration produces an electric well as a magnetic field. It produces an electric field because it's a charge particle. But when it is at rest, it doesn't produce a magnetic field.So, when there will be no any magnetic field then not produce induced E.F.
JEE Main Physics Mock Test- 5 - Question 13
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In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Torque is an axial vector and directed along the axis of rotation.
Reason(R): Torque is equal to vector product of force to the position vector.
JEE Main Physics Mock Test- 5 - Question 14
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The astronomical telescope consists of objective and eye-piece. The focal length of the objective is
JEE Main Physics Mock Test- 5 - Question 15
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Frequency range of audible sound is
JEE Main Physics Mock Test- 5 - Question 16
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A stretched sonometer wire is in unison with a tuning fork of frequency f'. When the length of wire is increased by 2%, the number of beats produced per second is 5. The frequency of fork is
JEE Main Physics Mock Test- 5 - Question 17
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If a ball of 80 kg mass hits an ice cube and temperature of ball is 100oC, how much ice becomes water? Specific heat of ball is 0.2 cal/gram.
JEE Main Physics Mock Test- 5 - Question 18
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Bright colours exihibited by spider's web exposed to sun light are due to
JEE Main Physics Mock Test- 5 - Question 19
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A bullet of mass 50 gram is fired from a 5 kg gun with a velocity of 1 km/sec. The speed of recoil of the gun is
JEE Main Physics Mock Test- 5 - Question 20
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Two uncharged identical capacitors A and B, each of capacitance C, and an inductor of inductance L are arranged as shown in the adjacent figure. At t = 0, the switch S1 is closed while switch S2 remains open. At time t = t0=√LCπ/2, switch S2 is closed while switch S1 is opened. 

Q. The charge on capacitor A after time t0 is
*Answer can only contain numeric values
JEE Main Physics Mock Test- 5 - Question 21
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A massless metal plate is placed on a horizontal tabletop lubricated with oil. The sheet is a square of side length ℓ = 1.0m and the oil layer has thickness h = 1.0 mm. Initially one edge of the sheet coincides with one edge of the table. The sheet is pulled outwards without rotation with a constant force F = 15 N. If coefficient of viscosity of the oil is η = 0.2 N-s/m2, how long (in second) will it take to pull half of the sheet out of the table?

Detailed Solution for JEE Main Physics Mock Test- 5 - Question 21

*Answer can only contain numeric values
JEE Main Physics Mock Test- 5 - Question 22
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Write the value of current i3 (in mA) in the circuit shown in the figure.

Detailed Solution for JEE Main Physics Mock Test- 5 - Question 22

5 × 103 I1 = 60 

Potential difference across 
10 kΩ = 240 – 60 = 180 V
So, I3 × 10 × 103 = 180
⇒ I3 = 18 mA
I2 = I3 – I1 = 6 mA

*Answer can only contain numeric values
JEE Main Physics Mock Test- 5 - Question 23
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A monochromatic light of wavelength 6500Å is used in YDSE. Now both slits are covered by two thin slab of refractive index 3.2 and 2.7 respectively. By doing so central bright fringe shifts to original 7th bright fringe. If both slabs have same thickness then thickness of slab is (in µm).

Detailed Solution for JEE Main Physics Mock Test- 5 - Question 23

*Answer can only contain numeric values
JEE Main Physics Mock Test- 5 - Question 24
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A hollow sphere (mass m, radius R) is put inside a hollow cone (mass m, radius 3R and semi-angle 30°) as shown in the figure. The whole arrangement is rigidly fixed to the ground at the apex of the cone. Both the sphere and the cone are made of the same material (α = 10–4 /°C). Considering that major changes in dimensions could happen only due to heating effects, find the increase in potential energy (in Joule) of the system if it's temperature is increased by 100°C.

Detailed Solution for JEE Main Physics Mock Test- 5 - Question 24

*Answer can only contain numeric values
JEE Main Physics Mock Test- 5 - Question 25
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A rod is clamped at both of its ends and stationary longitudinal waves are produced in it. In first experiment, the rod has a total of 4 nodes with amplitude of each anti-node to be 1 mm. In other experiment, the rod has a total of 6 nodes with amplitude of each anti node to be 2mm. The energy of vibrations in the rod in two cases is E1 and E2 respectively. Write value of E1/E2.

Detailed Solution for JEE Main Physics Mock Test- 5 - Question 25

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