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# AIIMS Physics Mock Test 9

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## 60 Questions MCQ Test AIIMS Mock Tests & Previous Year Papers | AIIMS Physics Mock Test 9

AIIMS Physics Mock Test 9 for NEET 2022 is part of AIIMS Mock Tests & Previous Year Papers preparation. The AIIMS Physics Mock Test 9 questions and answers have been prepared according to the NEET exam syllabus.The AIIMS Physics Mock Test 9 MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for AIIMS Physics Mock Test 9 below.
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AIIMS Physics Mock Test 9 - Question 1

### A shell initially at rest explodes into two pieces of equal mass. The two pieces will

AIIMS Physics Mock Test 9 - Question 2

### The number of turns in the primary and the secondary turns of a transformer are 1000 and 3000 respectively. If 80 volts A.C. is supplied to the primary coil of the transformer, then the potential difference/turn of the secondary coil would be

AIIMS Physics Mock Test 9 - Question 3

### Three cells each of e.m.f. 1.5 V and internal resistance 1 Ω are connected in parallel. What would be the e.m.f. of the combination ?

AIIMS Physics Mock Test 9 - Question 4

Electron microscope use electron for their which property

AIIMS Physics Mock Test 9 - Question 5

The speed of electrons in a cathode ray beam which remains undeflected, in Thomson's experiment, under the simultaneous action of a magnetic field of 2 X 10−3 wbm−2 and that of an electric field of 3 . 4 X 10 4 V m − 1 is

AIIMS Physics Mock Test 9 - Question 6

The charge deposited on 4 μ F capacitor in the circuit is

AIIMS Physics Mock Test 9 - Question 7

A photocell stops emission if it is maintained at 2V negative potential. The energy of most energetic photoelectron is

AIIMS Physics Mock Test 9 - Question 8

If a radiation of energy E falls normally on a perfectly reflecting surface, then the momentum transferred to the surface is

AIIMS Physics Mock Test 9 - Question 9

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

AIIMS Physics Mock Test 9 - Question 10

The power factor of a good choke coil is

AIIMS Physics Mock Test 9 - Question 11

The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane, along the perpendicular direction. The induced current in the conducting plane is

Detailed Solution for AIIMS Physics Mock Test 9 - Question 11

As per Lenz's law, induced current must be anticlockwise, so as to develop north polarity to oppose the incoming north pole.

AIIMS Physics Mock Test 9 - Question 12

The energy stored in coil carrying current I s U. If current is halved, then energy stored in the coil will be

AIIMS Physics Mock Test 9 - Question 13

A coil of inductances 300mH and resistance 2 Ω is connected to a source of voltage 2V. The current reaches half of its steady state value in

Detailed Solution for AIIMS Physics Mock Test 9 - Question 13

AIIMS Physics Mock Test 9 - Question 14

Which of the following statement is true?

AIIMS Physics Mock Test 9 - Question 15

A point charge q is placed at the centre of a skeleton cube made of thin non-conducting wire. The electric flux passing through one face of the cube is

AIIMS Physics Mock Test 9 - Question 16

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

AIIMS Physics Mock Test 9 - Question 17

Two bodies of mass m₁ and m₂ have equal kinetic energies. If p₁ and p₂ are their respective momentum, then ratio p₁ : p₂ is equal to

AIIMS Physics Mock Test 9 - Question 18

A long spring is stretched by 2 cm, its potential energy is U. If the spring is stretched by 10 cm, the potential energy stored in it will be

AIIMS Physics Mock Test 9 - Question 19

The lengths and radii of two rods made of same material are in the ratios 1:2 and 2:3 respectively. If the temperature difference between the ends for the two rods be the same, then in the steady state, the amount of heat flowing per second through them will be in the ratio

AIIMS Physics Mock Test 9 - Question 20

A 100 W, 200 V bulb is connected to a 160 volt supply. The actual power would be

AIIMS Physics Mock Test 9 - Question 21

When a material is placed in magnetic field 'B'. Magnetic moment proportional to 'B' but opposite in direction is induced. The material is

AIIMS Physics Mock Test 9 - Question 22

A thin rectangular magnet suspended freely has a period of oscillation equal to T. Now it is broken into two equal halves (each having half of the original length) and one piece is made to oscillate freely in the same field. If its period of oscillation is T ′ the ratio T ′ T is

AIIMS Physics Mock Test 9 - Question 23

The ratio of tangential stress to the shearing strain is called

AIIMS Physics Mock Test 9 - Question 24

A wagon 1000 kg is moving with a velocity 50 km/h on smooth horizontal rails. A mass of 250 kg is dropped into it. The velocity with which it moves now is

Detailed Solution for AIIMS Physics Mock Test 9 - Question 24

m1u = m2v
1000 X 50 = (1000 + 250) ν, ν = 40 km / hr.

AIIMS Physics Mock Test 9 - Question 25

The particle having a major role in binding the nucleus is-

AIIMS Physics Mock Test 9 - Question 26

Average value of K.E. and P.E. over entire time period is

AIIMS Physics Mock Test 9 - Question 27

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): We use a thick wire in the secondary of a step down transformer to reduce the production of heat.
Reason(R): When the plane of the armature is parallel to the line of force of magnetic field, the magnitude of the induced emf is maximum.

AIIMS Physics Mock Test 9 - Question 28

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 graph between the absolute temperature (T) of a gas and the square of speed of sound (v2) will bea parabola.
Reason(R): symbols have their usual meaning .

AIIMS Physics Mock Test 9 - Question 29

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): Frequency of note emitted by an organ pipe will decrease with rise in temperature.
Reason(R): Frequency =

AIIMS Physics Mock Test 9 - Question 30

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 uniform thin rod of length L is hinged about one of its end is free to rotate about the hinge without friction. Neglect the effect of gravity. A force F is applied at a distance x from the hinge on the rod such that force is always perpendicular to the rod. As the value of x is increased from zero to L, the component of reaction by hinge on the rod perpendicular to length of rod increases.
Reason(R) : Under the conditions given in statement 1 as x is increased from zero to L, the angular acceleration of rod increases.

AIIMS Physics Mock Test 9 - Question 31

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): In general magnetic force between two charges is much smaller compared to the electric force .
Reason(R): In general velocity of charges << velocity of light in free space.

AIIMS Physics Mock Test 9 - Question 32

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 retarding force is applied to stop a motor car. If the speed of the motor car is doubled, it will cover a distance four times longer before coming to stop, under the same retarding force.
Reason(R):Distance=SpeedXtime

AIIMS Physics Mock Test 9 - Question 33

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): Radio waves are not electomagnetic waves.
Reason(R): Basic source of electromagnetic wave is an accelerated charge .

AIIMS Physics Mock Test 9 - Question 34

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): Thomson's method of determining e m of positive rays, a parabola is obtained on the screen.
Reason(R): Electric field e and magnetic field B are kept parallel to each other.

AIIMS Physics Mock Test 9 - Question 35

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): X-rays are electromagnetic waves.
Reason(R) : They can be deflected by electric and magnetic fields.

AIIMS Physics Mock Test 9 - Question 36

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):The speed of driving a car safely in darkness depends upon the range of the headlight.
Reason(R):The range of the headlight of the car is the limit of the maximum distance upto which an obstacle on the road can be seen by the driver in darkness.

AIIMS Physics Mock Test 9 - Question 37

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): It is given that and vector . The angle between vector and is π
Reason(R) : Vectors and must be in the opposite directions.

AIIMS Physics Mock Test 9 - Question 38

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): According to Bohr's postulates, the electrons in stationary orbits do not radiate energy.
Reason(R) : According to classical physics, an accelerated charged particle emits radiation.

AIIMS Physics Mock Test 9 - Question 39

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): The electron passing through crossed magnetic and electric field is always deflected from its path.
Reason(R): If velocity of electrons is equal to the ratio of electric and magnetic field applied then electron beam may remain undeflected.

AIIMS Physics Mock Test 9 - Question 40

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): Heavy stable nuclides tend to have more number of neutrons than protons.
Reason(R) : In heavy nuclei, there is an excess of neutrons due to Coulomb repulsion between protons.

AIIMS Physics Mock Test 9 - Question 41

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):Speed of any particle cannot approach the speed of light.
Reason(R): (symbols have their usual meaning).

AIIMS Physics Mock Test 9 - Question 42

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): The capacitance of a condenser increases when a dielectric medium is filled between its plate.
Reason(R): Potential difference between the plates of capacitor is reduced by dielectric medium.

AIIMS Physics Mock Test 9 - Question 43

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): When a beetle moves along the sand within a few centimetres of scorpion, the scorpion immediately turns and dashes towards it.
Reason(R): When a beetle disturbs the sand, it send pulses along the sand's surface through which scorpion detects the beetle.

AIIMS Physics Mock Test 9 - Question 44

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): The ratio of rate of production (R) of neutrons to the rate of leakage of neutrons from a spherical body of 92U235 is directly proportional to radius (r).
Reason(R): Rate of production of neutron is directly proportional to volume but rate of leakage of neutrons is directly proportional to area.

AIIMS Physics Mock Test 9 - Question 45

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): Bulbs of ultraviolet lamps are made of quartz.
Reason(R): Ultraviolet radiations pass earily through glass.

AIIMS Physics Mock Test 9 - Question 46

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): Smell of ozone is found near electric spark.
Reason(R): Ozone protects ultraviolet radiations from reaching the earth.

AIIMS Physics Mock Test 9 - Question 47

If a force is applied on a body and it moves with a velocity ν, the power will be

AIIMS Physics Mock Test 9 - Question 48

Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?

AIIMS Physics Mock Test 9 - Question 49

A mercury vapour lamp is the example of

AIIMS Physics Mock Test 9 - Question 50

A person cannot see clearly distances more than 40 cm. He advised to use lens of power

AIIMS Physics Mock Test 9 - Question 51

'Mirage' is a phenomenon due to

AIIMS Physics Mock Test 9 - Question 52

Donor type impurity is found in

AIIMS Physics Mock Test 9 - Question 53

If a full wave rectifier circuit is operating from 50 Hz, mains, the fundamental frequency in the ripple will be

AIIMS Physics Mock Test 9 - Question 54

The heat developed in an electric wire of resistance R by a current I for a time t is

AIIMS Physics Mock Test 9 - Question 55

A suitable unit for gravitational constant is

AIIMS Physics Mock Test 9 - Question 56

Laser light is considered to be coherent as it consists of

AIIMS Physics Mock Test 9 - Question 57

Both light and sound waves produce diffraction. It is more difficult to observe the diffraction with light waves because

AIIMS Physics Mock Test 9 - Question 58

In Huygen's wave theory, the locus of all points oscillating in the same phase is called a

AIIMS Physics Mock Test 9 - Question 59

In C.G.S. system the magnitude of the force is 100 dynes. In another system where the fundamental physical quantities are kilogram, metre and minute, the magnitude of the force is

AIIMS Physics Mock Test 9 - Question 60

A body of mass m is moving in a circle of radius r with a constant speed v. The force on the body is mv 2 r and is directed towards the centre. What is the work done by this force in moving the body over half the circumference of the circle

Detailed Solution for AIIMS Physics Mock Test 9 - Question 60

Work done by the centripetal force is zero

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