SRMJEEE Physics Mock Test - 4 - JEE MCQ

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

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

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

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

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

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

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

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)

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

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

Solids expand on heating because

Curie temperature of iron is the temperature below which it is

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

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

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 :

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

Which of the following is a vector quantity?

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

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)

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

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

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)

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

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

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

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

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