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SRMJEEE Physics Mock Test - 7 - JEE MCQ


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30 Questions MCQ Test SRMJEEE Subject Wise & Full Length Mock Tests 2024 - SRMJEEE Physics Mock Test - 7

SRMJEEE Physics Mock Test - 7 for JEE 2024 is part of SRMJEEE Subject Wise & Full Length Mock Tests 2024 preparation. The SRMJEEE Physics Mock Test - 7 questions and answers have been prepared according to the JEE exam syllabus.The SRMJEEE Physics Mock Test - 7 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for SRMJEEE Physics Mock Test - 7 below.
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SRMJEEE Physics Mock Test - 7 - Question 1

If the rotational velocity of a dynamo armature is doubled, then the induced e.m.f. will

SRMJEEE Physics Mock Test - 7 - Question 2

The half life of a radioactive element is 50 minutes. What percentage of radioactive element will be present after 5 hours of decomposition?

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SRMJEEE Physics Mock Test - 7 - Question 3

When current cahnge from + 2 A to -2 A in 0.05 s, an e.m.f. of 8 V is induced in a coil. The coefficient of self inductance of the coil is

SRMJEEE Physics Mock Test - 7 - Question 4

A plumb line is suspended from a ceiling of a ear moving with horizontal acceleration of a. What will be the angle of inclination with vertical?

SRMJEEE Physics Mock Test - 7 - Question 5

Steel and copper wires of same length are stretched by the same weight one after the other.Young's modulus of steel and copper are 2 X 1011 N/m2 and 1.2 X 1011 N/m2. The ratio of increase in length

SRMJEEE Physics Mock Test - 7 - Question 6

An object initially at rest explodes into three fragments A, B and C. The momentum of A is Pi and that of B is √3Pj where P is a positive number. The momentum of C will be

SRMJEEE Physics Mock Test - 7 - Question 7

The de Broglie wavelength λ associated with an electron having kinetic energy E is given by the expression

SRMJEEE Physics Mock Test - 7 - Question 8

The resistors of resistances 2 Ω, 4 Ω and 8 Ω are connected in parallel, then the equivalent resistance of the combination will be

SRMJEEE Physics Mock Test - 7 - Question 9

If a transistor amplifier has a gain of 20 dB, then the ratio of output to input power is

SRMJEEE Physics Mock Test - 7 - Question 10

If the charge on a body is increased by 2C, the energy stored in it increased by 21%.The original charge on the body in coulombs is

SRMJEEE Physics Mock Test - 7 - Question 11

A force of 750 N is applied to a block of mass 102 kg to prevent it form sliding on a plane with an inclination angle 30° with the horizontal. If the coefficients of static friction and kinetic friction between the block and the plane are 0.4 and 0.3 respectively, then the frictional force acting on the block is

SRMJEEE Physics Mock Test - 7 - Question 12

In an artificial satellite a space traveller tries to fill ink in a pen by dipping it in ink. The amount of ink filled in the pen as compared the quantity of ink filled on earth's surface will be

SRMJEEE Physics Mock Test - 7 - Question 13

On increasing the temperature of a substance gradually, which of the following colours will be noticed by you

SRMJEEE Physics Mock Test - 7 - Question 14

If the kinetic energy of one mole of an ideal gas is given as E = 3/2 RT, (where R is the universal gas constant and T is the absolute temperature of the gas), the molar specific heat at constant pressure will be given as

SRMJEEE Physics Mock Test - 7 - Question 15

Two equal forces of magnitude P each act at a point inclined to each other at an angle of 120°. The magnitude of their resultant is

SRMJEEE Physics Mock Test - 7 - Question 16

Two long parallel wires P and Q are held perpendicular to the plane of paper with distance of 5 m between them. If P and Q carry current of 2.5 amp. and 5 amp. respectively in the same direction, then the magnetic field at a point half-way between the wires is

SRMJEEE Physics Mock Test - 7 - Question 17

If the moment of a magnet is 400 C.G.S units, and the force acting on each pole in a uniform magnetic field of strength 0.32 oersted is 5.12 dynes. The distance between the poles of the magnet is equal to

SRMJEEE Physics Mock Test - 7 - Question 18

In a capillary tube, water rises upto 3 mm. The height of water that will rise in another capillary tube having one-third radius of the first is

SRMJEEE Physics Mock Test - 7 - Question 19

A particle covers 150 m in 8th second starting from rest, its acceleration is

SRMJEEE Physics Mock Test - 7 - Question 20

A particle (A) is dropped from a height and another particle (B) is thrown in horizontal direction with speed of 5 m/sec from the same height. The correct statement is

SRMJEEE Physics Mock Test - 7 - Question 21

When a body is stationary

SRMJEEE Physics Mock Test - 7 - Question 22

If a body is released into a tunned dug along the diameter of the earth of radius R₀, it executes the S.H.M. with time period:

SRMJEEE Physics Mock Test - 7 - Question 23

A cricketer can throw a ball to a maximum horizontal distance of 100 m. The speed with which he throws the ball is (using g = 10 m/s2)

Detailed Solution for SRMJEEE Physics Mock Test - 7 - Question 23

SRMJEEE Physics Mock Test - 7 - Question 24

A wire of length L and cross-section A is made of material of Young's modulus Y. It is stretched by an amount x, the workdone is

SRMJEEE Physics Mock Test - 7 - Question 25

When a beam of light is used to determine the position of an object, the maximum accuracy is achieved, if the light is

SRMJEEE Physics Mock Test - 7 - Question 26

Of the two eggs which have identical sizes, shapes and weights, one is raw, and other is half boiled. The ratio between the moment of inertia of the raw to the half boiled egg about central axis is

SRMJEEE Physics Mock Test - 7 - Question 27

A body moves due east with a velocity of 25 km/h and then due north with a velocity of 25√3 km/h. The magnitude of the change in velocity is

SRMJEEE Physics Mock Test - 7 - Question 28

It is easy to wash clothes in hot water because its

SRMJEEE Physics Mock Test - 7 - Question 29

The temperature of the cold junction of a thermocouple is 0°C and temperature of the hot junction is T°C. The thermo e.m.f. is given by the relation E = AT-1/2BT2(Where A = 16 and B = 0.08). The temperature of inversion is

SRMJEEE Physics Mock Test - 7 - Question 30

When the volume of a saturated vapour is decreased, its pressure

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