SRMJEE Mock Test (Med) - 5 - JEE MCQ

The weight of a man in a lift moving upward is 608N while the weight of the same man in the lift moving downwards with the same acceleration is 368N. His normal weight in newtons is

A steady current ι is flowing through a conductor of uniform cross-section. Any segment of the conductor has

What is the de Broglie wavelength (in Å) of the alpha- particle accelerated through a potential difference V ?

The p.d. across an instrument in an A.C. circuit of frequency f is V and the current flowing through it is I such that V=5 cos 2 π ft amp. The power dissipated in the instrument is

Consider the following statenents Assertion (A) : Rubber is more elastic than glass. Reason (R) : The rubber has higher modulus of elasticity than glass. Of these statements

The number 6.25 in the decimal notation, when converted to the binary notation will read as:

Two electric charges of 9 μ C and − C are placed 0.16 m apart in air. There will be a point P at which electric potential is zero on the line joining the two charges and in between them. The distance of P from 9 μ C charge is

Two trolleys of masses m and 3m are connected by a spring. They are compressed and released once. They move off in opposite directions and come to rest after covering distances S₁ and S₂ respectively. Assuming coefficient of friction uniform, the ratio of the distances S₁ : S₂ is

The periodic time of communication satellite is

The rate of transfer of heat is more in

If an object of mass 2 kg is thrown vertically upwards, then the rate change of its momentum is (Take g = 10 m−s^-2)

When volume of system is increased two times and temperature is decreased half of its initial temperture, then pressure becomes

A proton of mass m and charge + e is moving in a circular orbit of magnetic field with energy 1 Me V. What should be the energy of α-particle (mass 4 m and charge + 2 e) so that it can revolve in the path of same radius as that of proton.

A dip circle is so set that its needle moves freely in the magnetic meridian. In this position, the angle of dip is 40⁰. Now the dip circle is rotated so that the plane in which the needle moves makes an angle of 30^o with the magnetic meridian. In this position, the needle will dip by an angle

In a plant, sucrose solution of coefficient of viscosity 0.0015 N-s-m^-2 is driven at a velocity of 10^-3 m-s^-1 through a xylem vessels of radius 2μm and length 5 μm. The pressure difference across the length of xylem vessels is

A truck and a car are moving with equal velocity. On applying the brakes both will stop after certain distance, then

A mass is hanging on a spring balance which is kept in a lift. The lift ascends. The spring balance will show in its reading

When a ceiling fan is switched off its angular velocity reduces 50% while it makes 36 rotations. How many more rotation will it make before coming to rest (Assume uniform angular retardation)

A simple pendulum of length l has a bob of mass m, with a charge q on it. A vertical sheet of charge, with surface charge density σ passes through the point of suspension. At equilibrium, the spring makes an angle θ with the vertical. its time period oscillations is T in this poisiton. Then

Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?

A big drop of radius R is formed by 1000 small droplets of water, then the radius of small drop is

Magnifying power of telescope can be increased by

A solid sphere is rotating in a free space. If radius of the sphere is increased, keeping the mass same, which one of the following will not be affected?

Three forces 9, 12 and 15 N acting at a point are in equilibrium. The angle between 9 N and 15 N is

In electrolysis, if the duration of the passage of current is doubled, the mass liberated is

If a glass rod is dipped in mercury and withdrawn out, the mercury does not wet the rod because

The variation of density of a solid with temperature is given by the formula