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AFMC Physics Mock Test - 1 - NEET MCQ


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30 Questions MCQ Test - AFMC Physics Mock Test - 1

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

If the wavelength of the first of the Balmer series of hydrogen is 6561 Å, the wavelength of the second line of the series should be

AFMC Physics Mock Test - 1 - Question 2

Which of the following has the mass closest in value to that of the positron

Detailed Solution for AFMC Physics Mock Test - 1 - Question 2

Answer :- b

Solution :- A positron is a particle of matter with the same mass as an electron but an opposite charge. Positron is the antiparticle of an electron.

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AFMC Physics Mock Test - 1 - Question 3

Energy needed to establish an alternating current I in a coil of self inductance L is

Detailed Solution for AFMC Physics Mock Test - 1 - Question 3

E = 1/2 LI2

AFMC Physics Mock Test - 1 - Question 4

An ammeter reads upto 1 ampere. Its internal resistance is 0.81 ohm. To increase the range to 10 A the value of the required shunt is

AFMC Physics Mock Test - 1 - Question 5

The current in a conductor varies with time t as I = 2t + 3t2 where I is in ampere and t in seconds. Electric charge flowing through a section of the conductor during t = 2 sec to t = 3 sec is

AFMC Physics Mock Test - 1 - Question 6

During X-ray formation if voltage is increased

AFMC Physics Mock Test - 1 - Question 7

When an inert gas is filled in the place vacuum in a photo cell, then

AFMC Physics Mock Test - 1 - Question 8

A straight conductor of length 0.4m is moved with a speed of 7 ms⁻1 perpendicular to a magnetic field of induction 0.9 Wb/m2. The induced e.m.f. across the conducor is

AFMC Physics Mock Test - 1 - Question 9

Turn ratio is 1: 25. The step up transformer operates at 230 V and current through secondary is 2A. Then current in primary is

Detailed Solution for AFMC Physics Mock Test - 1 - Question 9
- To find the primary current, use the formula: Primary Current (I1) = Secondary Current (I2) / Turn Ratio (TR).
- Given: TR = 25, I2 = 2 A.
- Calculate: I1 = 2 A / 25 = 0.08 A or 80 mA.
- The current in the primary is not 50 A; hence, the correct answer is not option 3.
- Reassess the options provided as none match 0.08 A.
AFMC Physics Mock Test - 1 - Question 10

The energy stored in a capacitor is actually stored

AFMC Physics Mock Test - 1 - Question 11

A black body is heated from 27°C to 127°C. The ratio of their energies of radiations emitted will be

AFMC Physics Mock Test - 1 - Question 12

A geostationary satellite orbits around the earth in a circular orbit of radius 36000 km. The time-period of a spy satellite orbiting a few hundred kilometers above the earth's surface will approximately be (Radius of earth = 6400 km).

AFMC Physics Mock Test - 1 - Question 13

An infinite number of charge of equal magnitude q, but of opposite sign are placed along the X-axis at x = 1, x = 2, x = 4, x = 8... and so on. The electric potential at the point x = 0 due to these charge will be

Detailed Solution for AFMC Physics Mock Test - 1 - Question 13


Theredore,

AFMC Physics Mock Test - 1 - Question 14

A polyatomic gas with n degrees of freedom has a mean energy per molecule given by

AFMC Physics Mock Test - 1 - Question 15

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 - 1 - Question 15





 

AFMC Physics Mock Test - 1 - Question 16

For a body moving with constant speed in a horizontal circle, which of the following remains constant ?

AFMC Physics Mock Test - 1 - Question 17

If a person with a spring balance and a body hanging from it goes up and up in an aeroplane, then reading of weight of body as indicated by spring balance will

Detailed Solution for AFMC Physics Mock Test - 1 - Question 17

As the person goes up and up above the earth’s surface, the acceleration due to gravity decreases. That’s why the reading on the spring balance will go on decreasing.

AFMC Physics Mock Test - 1 - Question 18

At 100 K and 0.1 atmospheric pressure, the volume of helium gas is 10 litres. If volume and pressure are doubled, its temperature will change to

AFMC Physics Mock Test - 1 - Question 19

A galvanometer of resistance 98 Ω is shunted by a resistance of 2 Ω . The fraction of total current that passes through the galvanometer is

AFMC Physics Mock Test - 1 - Question 20

An incompressible fluid flows steadily through a cylindrical pipe which has radius 2 R at point A and radius R at point B. If velocity at point A is ν, then its velocity at point B is

AFMC Physics Mock Test - 1 - Question 21

A 20 cm long capillary tube is dipped in water. The water rises up to 8 cm. If entire arrangement is put in a freely elevator, the length of water column in the capillary tube will be

AFMC Physics Mock Test - 1 - Question 22

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 - 1 - Question 23

A tank of height 5 m is full of water. There is a hole of cross-sectional area 1 cm2 in its bottom. Initial volume of water that will flow through the hole is (Take g = 10 m-s⁻2)

AFMC Physics Mock Test - 1 - Question 24

A body floats in a liquid contained in a beaker. If the whole system falls under gravity, then the upthrust on the body due to liquid is

AFMC Physics Mock Test - 1 - Question 25

Oil spreads over the surface of water, whereas water does not spread over the surface of oil, because

AFMC Physics Mock Test - 1 - 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

AFMC Physics Mock Test - 1 - Question 27

According to the Hooke's law, if stress is increased, then ratio of stress to strain

AFMC Physics Mock Test - 1 - Question 28

A sphere of mass m is tied to end of a string of length l and rotated through the other end along a horizontal circular path with speed υ. The work done in full horizontal circle is

AFMC Physics Mock Test - 1 - Question 29

If a train travelling at 72 kmph is to be brought to rest in a distance of 200 metres. then its retardation should be

Detailed Solution for AFMC Physics Mock Test - 1 - Question 29

AFMC Physics Mock Test - 1 - Question 30

In a compound microscope, the focal lengths of objective lens and eye piece are 1 cm and 2 cm respectively. If tube length of the microscope is 20 cm, then magnifying power of microscope will be

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