AFMC Physics Mock Test - 3 - NEET MCQ

# AFMC Physics Mock Test - 3 - NEET MCQ

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## 50 Questions MCQ Test AFMC Mock Test Series 2024 - AFMC Physics Mock Test - 3

AFMC Physics Mock Test - 3 for NEET 2024 is part of AFMC Mock Test Series 2024 preparation. The AFMC Physics Mock Test - 3 questions and answers have been prepared according to the NEET exam syllabus.The AFMC Physics Mock Test - 3 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for AFMC Physics Mock Test - 3 below.
Solutions of AFMC Physics Mock Test - 3 questions in English are available as part of our AFMC Mock Test Series 2024 for NEET & AFMC Physics Mock Test - 3 solutions in Hindi for AFMC Mock Test Series 2024 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt AFMC Physics Mock Test - 3 | 50 questions in 30 minutes | Mock test for NEET preparation | Free important questions MCQ to study AFMC Mock Test Series 2024 for NEET Exam | Download free PDF with solutions
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AFMC Physics Mock Test - 3 - Question 1

### Which one of these is non-divisible

AFMC Physics Mock Test - 3 - Question 2

### The radio activity of an element becomes 1/64th of original value in 60 sec. Then the half life period is

AFMC Physics Mock Test - 3 - Question 3

### An unknown resistance K₁ is connected in series with a resistance of 10 Ω. This combination is connected to one gap of a metre bridge, while a resistance K₂ is connected in the other gap. The balance point is at 50 cm. Now when the 10 Ω resistance is removed, the balance point shifts to 40 cm. The value of K₁ is

AFMC Physics Mock Test - 3 - Question 4

Consider the two following statements A and B and identify the correct choice given in the answers; (A) In photovoltaic cells the photoelectric current produced is not proportional to the, intensity of incident light. (B) in gas filled photoemissive cells, the velocity of photoelectrons depends on the wavelength of the incident radiation.

AFMC Physics Mock Test - 3 - Question 5

Which of the following does not obey the phenomenon of mutual induction?

AFMC Physics Mock Test - 3 - Question 6

Compare electrons accelerated through a certain potential difference and protons accelerated through the same p.d. If initial velocities are negligible, then the emergent

AFMC Physics Mock Test - 3 - Question 7

If 2.2 kW power is transmitted through a 10 Ω line at 22000 V, the power loss in the form of heat will be

AFMC Physics Mock Test - 3 - Question 8

In an oscillating LC circuit, the maximum charge on the capacitor is Q. The charge on the capacitor, when the energy is stored equally between the electric and magnetic field is

AFMC Physics Mock Test - 3 - Question 9

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

AFMC Physics Mock Test - 3 - Question 10

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

Detailed Solution for AFMC Physics Mock Test - 3 - Question 10

The resistance of the wires along the sides are 4 Ω each and the diagonal is 16 Ω
Then the above circuit satisfies the Wheatstone's balanced condition
Hence there is no current passing the resistance AC when a potential is applied between B and D
On removing the resistance AC, resistance DA and AB are series, similarly DC and CB are in series and the respective two are in parallel
Then the resistance across D - A - B = 4 + 4 = 8 Ω
Resistance across D - C - B = 4 + 4 = 8 Ω
Now both the 8 Ω are in parallel
Hence the effective resistance of the circuit is = 4 Ω

AFMC Physics Mock Test - 3 - Question 11

If 4 x 1020 eV of energy is required to move a charge of 0.25 coluomb between two points, the P.D. between them is

Detailed Solution for AFMC Physics Mock Test - 3 - Question 11

E = 4× 1020 eV = 64 J

{ since 1eV = 1.6 × 10-19 J,

4 × 1020 eV = 4 × 1020 × 1.6 ×10-19 J = 6.4 × 10 = 64 J }

charge = 0.25 C

potential difference = work / charge = 64 / 0.25 = 256V.

AFMC Physics Mock Test - 3 - Question 12

The value of g on the earth's surface is 980 cm/sec2. Its value at a height of 64 km from the earth's surface is

AFMC Physics Mock Test - 3 - Question 13

A black body, at a temprature of 227°C, radiates heat at a rate of 20 cal m⁻2s⁻1. When its temperature is raised to 727° the heat radiated by it in cal m⁻2s⁻1 will be closest to

AFMC Physics Mock Test - 3 - Question 14

Capacitance of a capacitor becomes 7/6 times its original value if a dielectric slab of thickness, t = 2/3 d is introduced in between the plates. 'd' is the separation between the plates. The dielectric constant of the dielectric slab is

Detailed Solution for AFMC Physics Mock Test - 3 - Question 14

AFMC Physics Mock Test - 3 - Question 15

At OK which of the following properties of a gas will be zero

AFMC Physics Mock Test - 3 - Question 16

A gas at certain temperature and volume has a pressure equal to 75 cm of Hg. If the mass of the gas is doubled, at the same volume and same temperature, its new pressure will be

AFMC Physics Mock Test - 3 - Question 17

A marble block of mass 2 kg lying on ice when given a velocity of 6 m−s⁻1 is stopped by friction in 10 s. Then the coefficient of friction is (Take g = 10 m−s⁻2)

AFMC Physics Mock Test - 3 - Question 18

300 J of work is done in sliding a 2 kg block up an inclined plane of height 10 m. Taking g = 10 m/s2, work done against friction is

AFMC Physics Mock Test - 3 - Question 19

The coil in the tangent galvanometer must be kept

AFMC Physics Mock Test - 3 - Question 20

A capillary tube of radius r is immersed in water and water rise in it to a height h. Mass of water in capillary tube is m. If the radius of the tube is doubled, the mass of water that will rise in capillary will be

AFMC Physics Mock Test - 3 - Question 21

The force of cohesion is maximum in

AFMC Physics Mock Test - 3 - Question 22

A capillary tube when immersed vertically in a liquid records a rise of 3 mm. If the tube is immersed in the liquid at an angle of 60” with the vertical, then height of the liquid in the capillary tube will be

AFMC Physics Mock Test - 3 - Question 23

Two water pipes P and Q having diameters 2 cm and 4 cm respectively are joined in series with the main supply line of water. The velocity of water flowering in pipe P is

AFMC Physics Mock Test - 3 - Question 24

A spherical drop of water has 1 mm radius. If the surface tension of water is 70x10⁻3 N-m⁻1, then difference of pressures between inside and outside of spherical drop is

AFMC Physics Mock Test - 3 - Question 25

Spherical balls of radius R are falling in a viscous fluid of viscosity η with a velocity v. The retarding viscous force acting on the spherical ball is:

AFMC Physics Mock Test - 3 - Question 26

The extension in a string, obeying the Hooke's law, is x. The speed of sound in the stretched string is v. If the string is extended to 1.5 x, then speed of sound will be

Detailed Solution for AFMC Physics Mock Test - 3 - Question 26

Speed of sound in a stretched string v =
Where T is the tension in the string and μ is mass per unit length
According to Hooke's law, F ∝ x
∴ T ∝ x .....(ii)

AFMC Physics Mock Test - 3 - Question 27

A wire fixed at the upper end, stretches by length l by applying a force F. Work done in stretching done the wire is

Detailed Solution for AFMC Physics Mock Test - 3 - Question 27

If the wire is increased by infinite small length dl, then the work done is

AFMC Physics Mock Test - 3 - Question 28

The path of a particle moving under the influence of a force fixed in magnitude and direction is

AFMC Physics Mock Test - 3 - Question 29

A body is whirled in a horizontal circle of radius 20 cm. It has angular velocity of 10 rad/s. What is its linear velocity at any point on circular path

AFMC Physics Mock Test - 3 - Question 30

The magnifying power of a telescope is 'm'. If the focal length of the objective is doubled, then its magnifying power will become

Detailed Solution for AFMC Physics Mock Test - 3 - Question 30

AFMC Physics Mock Test - 3 - Question 31

In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.170 s. The frequency of the wave is

AFMC Physics Mock Test - 3 - Question 32

In which of the following case, man will not see image greater than himself ?

AFMC Physics Mock Test - 3 - Question 33

A lens is placed between a source of light and a wall. It forms images of area A₁ and A₂ on the wall, for its two different positions. The area of the source obtained is

AFMC Physics Mock Test - 3 - Question 34

Single from a remote control to the device operated by it travels with the speed of

AFMC Physics Mock Test - 3 - Question 35

A particle performing uniform circular motion has angular momentum L. If its angular frequency is doubled and its kinetic energy halved, then the new angular momentum is

AFMC Physics Mock Test - 3 - Question 36

A wheel rotates with a constant acceleration of 2.0 radian/sec2. If the wheel starts from rest the number of revolutions it makes in the first ten seconds will be approximately

AFMC Physics Mock Test - 3 - Question 37

Let F̅ be the force acting on a particle, having position vector r̅,and T̅ be the torque of this force about the origin, then

AFMC Physics Mock Test - 3 - Question 38

A body A of mass M while falling vertically downwards under gravity breaks into two parts, a part B of mass M/3 and body C of mass 2M/3. The centre of mass of the bodies B and C taken together

Detailed Solution for AFMC Physics Mock Test - 3 - Question 38

No horizontal external force is acting
∴ acm = 0
since vcm = 0
∴ Δxcm = 0

AFMC Physics Mock Test - 3 - Question 39

A cylindrical solid of mass M has radius R and length L. Its moment of inertia about a generator is

AFMC Physics Mock Test - 3 - Question 40

The acceleration of a particle in S.H.M. is

AFMC Physics Mock Test - 3 - Question 41

A semiconductor device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops almost to zero. The device may be

AFMC Physics Mock Test - 3 - Question 42

One calorie is defined as the amount of heat required to raise the temperature of 1 g of water by 1°C under temperature range at a particular pressure. The correct temperature range and pressure are

AFMC Physics Mock Test - 3 - Question 43

One second is equal to

AFMC Physics Mock Test - 3 - Question 44

The S.I. unit of gravitational potential is

AFMC Physics Mock Test - 3 - Question 45

Chronometer is used to measure

AFMC Physics Mock Test - 3 - Question 46

When a star moves away from earth, the spectrum of the star shifts towards higher wavelength side. This is due to

AFMC Physics Mock Test - 3 - Question 47

Bubble's of colourless soap solution appear coloured in sun light. This is due to

AFMC Physics Mock Test - 3 - Question 48

When distance between source of light and observer decreases, then the apparent frequency of light

AFMC Physics Mock Test - 3 - Question 49

A tuning fork when sounded along with a standard source of frequency 300 Hz produces 5 beats/sec. The tuning fork when loaded by some wax is again found to give 5 beats/sec with the standard source. The frequency of the fork originally is

AFMC Physics Mock Test - 3 - Question 50

The kinetic energy of a body is four times it momentum. Its velocity is

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