NEET Mock Test - 13 - NEET MCQ

A proton and an α - particle enter into a region of uniform electric field. The ratio of the force on proton to that on α - particle is

A body of mass 5 kg is moving in a circle of radius 1 m with an angular velocity of 2 radian/s. The centripetal force is

Three identical cells each of e.m.f. 2 V and unknown internal resistances are connected in parallel. This combination is connected to a 5 Ω resistor. If the terminal voltage across the cell is 1.5 V, then internal resistance of each cell is

The masses of three wires of copper are in ratio 1 : 2 : 3 and their length are in the ratio 3 : 2 : 1. The ratio of their resistances is

During X-ray formation if voltage is increased

The de-Broglie wavelength of a particle moving with a velocity 2.25 x 10⁸ ms⁻¹ is equal to the wavelength of a photon. The ratio of kinetic energy of the particle to the energy of the photon is [velocity of light = 3 x 10⁸ ms⁻¹ is]

An electron of mass m when accelerated through a potential difference V has de Broglie wavelength λ. The de Broglie wavelength associated with a proton of mass M accelerated through the same potential difference will be

de-Broglie hypothesis treated electrons as

The fact that radiosignals reach the earth from outside the atmosphere, was discovered accidently by

Maxwell's equation describe the fundamental laws of

The capacitor of a parallel plate capacitor with no dielectric substance and a separation of 0.4 cm is 2 μF. The separation is reduced to half and it is filled with a substance of dielectric value 2.8. The new capacity of the capacitor is

The effective value of a.c. in a circuit is 10 A. The peak value of current is

The weight of a body is defined as

On a cold morning, a metal surface will feel colder to touch than a wooden surface because

A capacitor of capacitance 1 μF is charged to 1KV. The energy stored in the capacitor in joules is

A gas at 27°C temperature and 30 atmospheric pressure is allowed to expand to the atmospheric pressure. If the volume becomes 10 times its initial volume, then the final temperature becomes

A circular coli carrying current i is placed in the earth's magnetic field such that its magnetic dipole moment is pointing towards north-west. The neutral points are located on a line passing through the centre of the coli and pointing towards

Two steel balls, one which weighs twice as much as the other, roll off a horizontal table with the same speeds. In this situation,

When a current flows in a wire, there exists an electric field in the direction of

If pressure inside two soap bubbles are 1.01 and 1.02 atm respectively, then the ratio between their volumes is (Take atmospheric pressure = 1 atm)

A magnetised wire of magnetic moment M is bent into an arc of a circle that subtend and an angle of 60° at the centre. The equivalent magnetic moment is

In a Rutherford scattering experiment when a projectile of charge z₁ and mass M₁ approaches a target nucleus of charge z₂ and mass M₂, the distance of closest approach is r₀. The energy of the projectile is:

Which is not electromagnetic wave in the following?

The ratio of kinetic energy at mean position to the potential energy when the displacement is half of the amplitude is

 represents

Light appears to travel in a straight line, because

A luminous object is placed at a distance of 30 cm from the convex lens of focal length 20 cm. On the other side of the lens, at what distance from the lens a convex mirror of radius of curvature 10 cm be placed in order to have an inverted image of the object coincident with it ?