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# SRMJEEE Physics Mock Test - 4

## 35 Questions MCQ Test SRMJEEE Subject Wise & Full Length Mock Tests | SRMJEEE Physics Mock Test - 4

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This mock test of SRMJEEE Physics Mock Test - 4 for JEE helps you for every JEE entrance exam. This contains 35 Multiple Choice Questions for JEE SRMJEEE Physics Mock Test - 4 (mcq) to study with solutions a complete question bank. The solved questions answers in this SRMJEEE Physics Mock Test - 4 quiz give you a good mix of easy questions and tough questions. JEE students definitely take this SRMJEEE Physics Mock Test - 4 exercise for a better result in the exam. You can find other SRMJEEE Physics Mock Test - 4 extra questions, long questions & short questions for JEE on EduRev as well by searching above.
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### A cannon ball is fired with a velocity 200 m/sec at an angle of 60° with the horizontal. At the highest point of its flight it explodes into 3 equal fragments, one going vertically upwards with velocity 100 m/sec, the second one falling vertically downwards with a velocity 100 m/sec. The third fragment will be moving with a velocity

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QUESTION: 4

A string can withstand a tension of 50 Newtons. The greatest speed at which a body of mass 250 gm can be whirled in a circle using 50 cm length of string is—

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QUESTION: 5

During execution, OP code of an instruction is stored in the:

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QUESTION: 6

A dust particle of mass 10−3 gm is stationary between the plates of a horizontal parallel plate capacitor of 0.016m separation which is connected to a voltage of 100V. How many fundamental charges (e = 1.6 x 10 − 19 C) the dust particle carries

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QUESTION: 7

n identical cells each of e.m.f. E and internal resistance r are connected in series. An external resistance R is connected in series to this combination. The current through R is

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QUESTION: 8

If we express the energy of a photon in KeV and the wavelength in angstroms, then energy of a photon can be calculated from the relation

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QUESTION: 9

Which of the following will be σ if Y=2.4η

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QUESTION: 10

In an induction coil with resistance, the induced emf will be maximum, when

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QUESTION: 11

A body of 5 kg weight kept on a rough inclined plane of angle 30° starts sliding with a constant velocity. Then the coefficient of friction is (assume g = 10 m/s2)

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QUESTION: 12

A body is projected vertically upwards from the surface of a planet of radius R with a velocity equal to half the escape velocity for that planet. The maximum height attained by the body is

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QUESTION: 13

In order that the heat flows from one part of a solid to another part, what is required

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QUESTION: 14

Solids expand on heating because

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QUESTION: 15

Curie temperature of iron is the temperature below which it is

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QUESTION: 16

Which of the following statements is not correct about the magnetic field?

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QUESTION: 17

In a surface tension experiment with a capillary tube, water rises upto 8 mm. If the same experiment is repeated on an artificial satellite, which is revoling around the earth, water will tise in capillary tube upto a height of

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QUESTION: 18

Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the magnitude of the minimum additional force needed is :

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QUESTION: 19

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

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QUESTION: 20

Which of the following is a vector quantity?

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QUESTION: 21

A gun fires a bullet of mass 50gm with a velocity of 30m/s. Because of this gun is pushed back with a velocity of 1m/s. Mass of the gun is

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QUESTION: 22

If a ring is suspended from a point on a 2.25 m long string, then time period of oscillation will be(take g = 9.8 m-s⁻2)

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QUESTION: 23

The root mean square speed of the molecules of a gas is

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QUESTION: 24

A concave mirror of focal length f (in air) is immersed in water (μ = 4/3). The focal length of the mirror in water will be

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QUESTION: 25

A cricketer hits a ball with a velocity 25 m/s at 60° above the horizontal. How far above the ground it passes over a fielder 50 m from the bat (assume the ball is struck very close to the ground)

Solution:

Here ball is hit by cricketer with 25 m/s velocity.
The angle of projection = 60°
Horizontal component of velocity
vx = 25 cos 60° = 12.5 m/s
Vertical component of velocity

Time taken by ball to cover 50 m dustabce

Now the vertical distance covered by the ball is given by

QUESTION: 26

A dics of radius 1 m is rotating with an angular velocity of 10 rad-s⁻1. The linear velocity of the dics on a point 0.5 m from its centre is

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QUESTION: 27

The resultant of two forces 3P and 2P is R. If the first force is doubled then the resultant is also doubled. The angle between the two forces is

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QUESTION: 28

Neglecting gravity, the potential energy of a molecule of liquid on the surface of liquid when compared with potential energy of molecule inside the liquid is

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QUESTION: 29

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in the form of heat will be

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QUESTION: 30

Two metal rods A and B are having their initial lengths in the ratio 2:3 and coefficients of linear expansion in the ratio 3:4, when they are heated through the same temperature difference, the ratio of their linear expansions is

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QUESTION: 31

Consider the following statements
Assertion (A) : In adiabatic compression, the internal energy and temperature of the system get decreased
Reason (R) : The adiabatic compression is a slow process
Of these statements

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QUESTION: 32

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

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QUESTION: 33

If ratio of amplitude of two waves is 4:3, then ratio of maximum and minimum intensity is

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QUESTION: 34

represents an equation of a progressive wave, where t is in second and x is in meter. The distance travelled by the wave in 5 seconds is

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QUESTION: 35

A bullet mass 10 gm is fired from a gun of mass 1 kg. If the recoil velocity is 5 m/s, the velocity of the muzzle is

Solution:

If the bullet and gun is considered a system, the force exerted by trigger will be internal
Now, according to the law of conservation of momentum
Initital momentum of gun = Momentum imparted to bullet and muzzle
⇒ 1000 x 5 = 10 x v
⇒ v (Velocity of muzzle) = 500 ms-1