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KEAM Paper 1 Mock Test - 5 - JEE MCQ


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30 Questions MCQ Test KEAM Mock Test Series 2024 - KEAM Paper 1 Mock Test - 5

KEAM Paper 1 Mock Test - 5 for JEE 2024 is part of KEAM Mock Test Series 2024 preparation. The KEAM Paper 1 Mock Test - 5 questions and answers have been prepared according to the JEE exam syllabus.The KEAM Paper 1 Mock Test - 5 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for KEAM Paper 1 Mock Test - 5 below.
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KEAM Paper 1 Mock Test - 5 - Question 1

Which of th following transitions in a hydrogen atom emits the photon of highest frequency?

KEAM Paper 1 Mock Test - 5 - Question 2

A nucleus with Z = 92 emits the following in a sequence: α,β⁻,β⁻,α,α,α,α,α,β⁻,β⁻,α,β⁺,β⁺,α. The atomic no. of the resulting nuclues is

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KEAM Paper 1 Mock Test - 5 - Question 3

Uniform wire 16 Ω resistance is made in the form of a square. Two opposite corners of the square are connected by a wire of resistance of 16 Ω . The effective resistance between the other two opposite corners is

KEAM Paper 1 Mock Test - 5 - Question 4

Three similar cells, each of e.m.f. 2V and internal resistance r Ω send the same current through an external resistance of 2 Ω, when connected in series or in parallel. The strength of the current flowing through the external resistance is

KEAM Paper 1 Mock Test - 5 - Question 5

Uncertainty in position of the electron is of the order of de-Broglie wavelength. Making use of Heisenberg's uncertainty principle, it will be found that uncertainty in velocity ν is of the order of

KEAM Paper 1 Mock Test - 5 - Question 6

If momentum of a particle is doubled, then its de-Broglie's wavelength will

KEAM Paper 1 Mock Test - 5 - Question 7

Radio wave diffract around building although light waves do not. The reason is that radio waves:

KEAM Paper 1 Mock Test - 5 - Question 8

Five equal capacitors connected in series have a resultant capacitance of 4 μF. The total energy stored in these, when these are connected in parallel and charged to 400V is

KEAM Paper 1 Mock Test - 5 - Question 9

A 20F capacitor is charged to 5V and isolated. It is then connected in parallel with an uncharged 30F capacitor. The decrease in the energy of the system will be

KEAM Paper 1 Mock Test - 5 - Question 10

Taking that earth revolves round the sun in a circular orbit of radius 15 x 1010 m, with a time period of 1 year, the time taken by another planet, which is a distance of 540 x 1010 m, to revolve round the sun in circular orbit once, will be

KEAM Paper 1 Mock Test - 5 - Question 11

The periodic time of a communication satellite is

KEAM Paper 1 Mock Test - 5 - Question 12

The energy spectrum of a black body exhibits a maximum around a wavelength λ₀. The temperature of a black body is now changed such that the energy is maximum around a wavelength 0.75 λ₀. The power radiated by the black body will now increase by a factor of

KEAM Paper 1 Mock Test - 5 - Question 13

A liquid cools down from 70ºC to 60ºC in 5 minutes. The time taken to cool it from 60ºC to 50ºC will be

KEAM Paper 1 Mock Test - 5 - Question 14

If a particle covers half the circle of radius R with constant speed, then

KEAM Paper 1 Mock Test - 5 - Question 15

A wire of length L metre, carrying a current I ampere is bent in the form of a circle. its magnitude of magnetic moment will be

KEAM Paper 1 Mock Test - 5 - Question 16

A particle is moving eastwards with a velocity of 5 m − s⁻1. In 10 s, the velocity changes to 5 m − s⁻1 northwards. The average acceleration in this time is

KEAM Paper 1 Mock Test - 5 - Question 17

A particle is viberating in a simple harmonic motion with an amplitude of 4 cm. At what displacement from the equilibrium position, is its energy half potential and kinetic ?

KEAM Paper 1 Mock Test - 5 - Question 18

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): Due to opposition offered by self-inductance, work is done by external agent in establishing current in circuit. This work done is stored as potential energy.
Reason(R): Self-inductance of a coil depends on the geometry of coils and medium.

KEAM Paper 1 Mock Test - 5 - Question 19

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): Both heat energy and charge are carried by the free electrons in pure metals.
Reason(R) : For pure metals, the electrical conductivity σ is directly related to the thermal conductivity K.

KEAM Paper 1 Mock Test - 5 - Question 20

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): Costly wrist watches and other instruments are enclosed in a soft-iron case to protect it from external field.
Reason(R): Iron-case is used as magnetic screening or shielding.

KEAM Paper 1 Mock Test - 5 - Question 21

If 'S' is stress and 'Y' is Young's modulus of material of a wire, then the energy stored in the wire per unit volume is

KEAM Paper 1 Mock Test - 5 - Question 22

The density of ice is 9.0 g/c.c. and that of sea water is 1.1 g/c.c. An ice berg of volume V is floating in sea water. The fraction of ice berg above water level is

KEAM Paper 1 Mock Test - 5 - Question 23

A light ray passed through an equilateral prism. If the angles of incidence and emergence are 45°45° and 55°55°respectively, the angle of deviation is

KEAM Paper 1 Mock Test - 5 - Question 24

A constant torque of 314 N-m is exerted on a pivoted wheel. If angular acceleration of wheel is 4π rad-s⁻², then the moment of inertia of the wheel is

KEAM Paper 1 Mock Test - 5 - Question 25

Two bodies M and N of equal masses are suspended from two separate massless springsof force constants K₁ and K₂ respectively. If the two bodies oscillate vertically such that their maximum velocities are eqaul, the ratio of the amplitude of M to that of N is

KEAM Paper 1 Mock Test - 5 - Question 26

A stretched string is in unison with a tuning fork of frequency 392 Hz. If the length of the string is decreased by 2%, the number of beats heard per second is

KEAM Paper 1 Mock Test - 5 - Question 27

During the adiabatic process, the pressure of gas is found to be proportional to the cube of its absolute temperature. The ratio CP/CV for gas is

KEAM Paper 1 Mock Test - 5 - Question 28

A given system undergoes a change, in which work done by a system equal to decrease in its internal energy. The system must have undergone an

KEAM Paper 1 Mock Test - 5 - Question 29

Which of the following is not a unit of energy

KEAM Paper 1 Mock Test - 5 - Question 30

For the constructive interference the path difference between the two interfering waves must be equal to

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