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# JIPMER Physics Mock Test - 5

## 60 Questions MCQ Test JIPMER 2020: Subject wise and Full Length Mock Tests | JIPMER Physics Mock Test - 5

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This mock test of JIPMER Physics Mock Test - 5 for NEET helps you for every NEET entrance exam. This contains 60 Multiple Choice Questions for NEET JIPMER Physics Mock Test - 5 (mcq) to study with solutions a complete question bank. The solved questions answers in this JIPMER Physics Mock Test - 5 quiz give you a good mix of easy questions and tough questions. NEET students definitely take this JIPMER Physics Mock Test - 5 exercise for a better result in the exam. You can find other JIPMER Physics Mock Test - 5 extra questions, long questions & short questions for NEET on EduRev as well by searching above.
QUESTION: 1

### The inductive reactance of an inductor of 1/π henry at 50 Hz frequency is

Solution:

Inductive resistance XL = ωL = 2π fL
f = 50 Hz
L = 1 π henry
XL = 2π x 1/π x 50 = 100 ohm

QUESTION: 2

Solution:
QUESTION: 3

### A 5.0 μF capacitor is charged to a potential difference of 800 V and discharged through a conductor. The energy given to the conductor during the discharge is

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QUESTION: 4

A small power station supplies electricity to 5000 lamps connected in parallel. Each lamp has a resistance of 220 Ω and is operated at 220 V. The total current supplied by the station is

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QUESTION: 5

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

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QUESTION: 6

When the plane of the armature of a.c. generator is parallel to the field, in which it is rotating,

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QUESTION: 7

The average power dissipation in a pure capacitor in AC circuit is

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QUESTION: 8

There are six identical cells each having an electromotive force (e.m.f.) of 6 V, which are connected in series. The resultant e.m.f. of the combination is

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QUESTION: 9

A wheel of radius R is rolling along a horizontal surface with a speed u. A pebble trapped on the wheel gets separated from the highest point of the wheel when the wheel arrives at position P (fig.). The horizontal range PQ of the pebble is Solution:

Considering the vertical motion of the projectile (pebble), the time taken to reach the ground after leaving the wheel is given by
2R = 0 + 12 gt2, from which t = 2 ( Rg )
The horizontal range of the pebble is PQ = horizontal velocity x time of flight
The centre of mass of the wheel is moving with speed u.
The pebble at the topmost point of the wheel is moving horizontally with speed u with respect to the wheel so that the horizontal velocity of the pebble with respect to the ground is u + u = 2u.
Therefore, horizontal range PQ = 2u x 2 ( Rg ) = 4u √(R/g)

QUESTION: 10

Two point charges +8q and -2q are located at x = 0 and x = L respectively. The location of a point on the x-axis, at which the net electric field due to these two point charges is zero, is

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QUESTION: 11

The electrostatic capacity of a capacitor depends upon its

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QUESTION: 12

A uniform chain of length L changes partly from a table which is kept in equilibrium by friction. The maximum length that can Withstand without slipping is l, then coefficient of friction between the table and the chain is

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QUESTION: 13

The periodic time of communication satellite is

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QUESTION: 14

Orbital velocity of an artificial satellite does not depends upon

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QUESTION: 15

A slab consists of two parallel layers of two different materials of same thickness having thermal conductivities k₁ and k₂. The equivalent conductivity of the combination is

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QUESTION: 16

In Young's double slit expt., the intensity on screen at a point where path difference is λ is K. What will be intensity at the point where path differnce is λ/4?

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QUESTION: 17

If two moles of diatomic gas and one mole of mono atomic gas are mixed then the ratio of specific heats is

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QUESTION: 18

Two long parallel wires carry equal current I in the same direction. The length of each wire is l and the distance between them is a. Force acting on each wire is

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QUESTION: 19

A straight wire of length 0.5 meter and carrying a current of 1.2 ampere is placed in a uniform magnetic field of induction 2 telsa. The magnetic field is perpendicular to the length of the wire. The force on the wire is

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QUESTION: 20

A direct current I flows along the length of an infinitely long straight thin walled pipe, then the magnetic field is

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QUESTION: 21

When 2 ampere current is passed through a tangent galvanometer, it gives a deflection of 30o. For 60o deflection, the current must be

Solution:

For tangent Galvanometer
i2  i1  = tanθ2 tanθ1
or i 2 2 = tan60o tan30o
or i2 = 2 x 3 = 6 ampere

QUESTION: 22

The null points are on the axial line of a bar magnet, when it is placed such that its south pole points

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QUESTION: 23

Two similar bar magnets P and Q each of magnetic moment M are taken. If P is cut along its axial line and Q is cut along its equatorial line, all the four pieces obtained have each of

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QUESTION: 24

A beaker containing a liquid of density (ρ) moves up with an acceleration (a). The pressure due to liquid at a depth (h) below the surface of the liquid is

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QUESTION: 25

If a gymnast, sitting on a rotating stool with his arms outstretched, suddenly lowers his hands

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QUESTION: 26

Two similar wires under the same load yield elongations of 0.1 mm and 0.05 mm respectively. If the area of cross-section of the first wire is 4 mm2, then the area of cross-section of the second wire is

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QUESTION: 27

The surface tension of a liquid decreases with rise in

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QUESTION: 28

A man of mass 20kg standing in an elevator whose cable broke suddenly. If the elevator falls freely the force exerted by the floor of the elevator on the man is

Solution:
QUESTION: 29

A bullet moving with a speed of 100 ms-1 can just penetrate two planks of equal thickness. Then, the number of such planks penetrated by the same bullet when the speed is doubled, will be

Solution:

From equation of motion v2 = u2 + 2as
Let thickness of one plank is x, when bullet speed is 100 ms-1, then it is able to penetrate two planks.
Thus,
0 = 1002 + 2a x2x
⇒ 2a = -((100)2/2x)
Let it be able to penetrate n planks when bullet speed is doubled.
0 = (200)2 + 2a x nx
⇒ (200)2 = ((100)2/2x) x nx
⇒ (n/2) = 4
⇒ n = 8.

QUESTION: 30

In the nuclear decay given below: ,
the particles emitted in the sequence are:

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QUESTION: 31

If the period of oscillation of mass (M) suspended from a spring is 2 s, then the period of mass 4 M will be

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QUESTION: 32

A nuclear reactor has a power of 16 Kw. If the energy per fission is 200 MeV, the number of fissions per second is

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QUESTION: 33

A person uses spectacles of power +2D. He is suffering from

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QUESTION: 34

The number of photo-electrons emitted per second from a metal surface increases when

Solution:
QUESTION: 35

Photoelectric effect is possible when threshold frequency for the metal is

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QUESTION: 36

Max. height of a bullet when fired at 30o with the horizontal is 11 m. Then height when it is fired at 60o is

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QUESTION: 37

A palne mirror produces a magnification of

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QUESTION: 38

Band spectrum is formed due to

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QUESTION: 39

In the achromatic prism, we have

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QUESTION: 40

A ray of light passes from glass (refractive index = 1.5) to water (refractive index = 1.33). The value of the critical angle of glass is

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QUESTION: 41

A mass m is vertically suspended from a spring of negligible mass; the system oscillates with a frequency n. What will be the frequency of the system, if a mass 4m is suspended from the same spring?

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QUESTION: 42

The moment of inertia of a circular ring about an axis passing through its centre and normal to its plane is 200 gm x cm2. Then its moment of inertia about a diameter is

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QUESTION: 43

A mass m is suspended from a string of length l and force constant K. The frequency of vibration of the mass is f₁. The spring is cut into two equal Parts and the same mass is suspended from one of the parts. The new frequency of vibration of mass is f₂. Which of the following relations between the frequencies is correct

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QUESTION: 44

Minority charge carriers present in a p-type semiconductor are due to

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QUESTION: 45

In a semiconductor

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QUESTION: 46

The frequency of transverse vibrations in a stretched string is 200 Hz. If the tension is increased four times and the length is reduced to one-fourth the original values, the frequency of vibration will be

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QUESTION: 47

A long cylindrical glass vessel has a small hole of radius \'r\' at its bottom. The depth to which the vessel can be lowered vertically in the deep water bath (surface tension T) without any water entering inside is

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QUESTION: 48

A heater of 220 V haets a volume of water in 5 minute time. A heater of 110 V haets the same volume of water in

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QUESTION: 49

At neutral temperature, the thermoelectric power dE/dT has the value

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QUESTION: 50

An immersion heater of 1 kilowatt will take the time for increasing the temperature of 1 litre of water through 10oC is

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QUESTION: 51

A metallic solid sphere is rotating about its diameter as axis of rotation. If the temperature is increased by 200oC, the percentage increased in its moment of inertia is (Coefficient of linear expansion of the metal = 10-5 / oC )

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QUESTION: 52

Consider the following statements:
Assertion (A) : The internal energy of an ideal gas does not change during an isothermal process
Reason (R) : The decrease in volume of a gas is compensated by a corresponding increase in pressure when its temperature is held constant
Of these statements :

Solution:
QUESTION: 53

It is difficult to cook rice in an open vessel by boiling it at high altitudes because of

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QUESTION: 54

Dimensions of 1/μ₀ε₀, where symbols have their usual meaning, are

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QUESTION: 55

The dimensions of the term a/b in the equation P= (a+x/b), where P is pressure and x is distance, are

Solution:
QUESTION: 56

In young's double slit experiment, the intensity of central maximum is I. It one slit is closed, the intensity at the same place will become

Solution:
QUESTION: 57

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

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QUESTION: 58

A string under a tension of 129.6 newton produces 10 beats/sec, when it is vibrated along with a tuning fork. When the tension in the string is increased to 160 newton, it sounds in unison with the same tuning fork. Then frequency of tuning fork is

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QUESTION: 59

Quality of sound depends upon

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QUESTION: 60

A force of 5N making an angle θ with the horizontal acting on an object displaces it by 0.4m along the horizontal direction. If the object gains kinetic energy of 1J, the horizontal component of the force is

Solution: