Test: Physics Mock Test - 1 - NEET MCQ

A system consists of two identical particles one particle is at rest and the other particle has an acceleration 'a'. The centre of mass of the system has an acceleration of

A gun fires a bullet of mass 50 gm with a velocity of 30 ms^-1. Because of this the gun is pushed back with a velocity of 1 ms^-1. Mass of the gun is

Two resistances of 400 Ω and 800 Ω are connected in series with 6 volt battery of negligible internal resistance. A voltmeter of resistance 10,000 Ω is used to measure the potential difference across 400 Ω. The error in the measurement of potential difference in volts approximately is

The core of a transformer is laminated so that

The de-Broglie wavelength associated with proton changes by 0.25% if its momentum is changed by P₀. The initial momentum was

A horizontal force, just sufficient to move a body of mass 4kg lying on a rough horizontal surface is applied on it. The coefficients of static and kinetic friction between the body and the surface are 0.8 and 0.6 respectively. If the force continues to act even after the block has started moving, the acceleration of the block in m s⁻² is [g = 10 m s ^{− 2} ]

A body of mass m is placed on the earth's surface. It is taken from the earth's surface to a height h = 3R. The change in gravitational potential energy of the body is

A capacitor of capacity 10 μ F is charged to 40V and a second capacitor of capacity 15 μ F is charged to 30V. If they are connected in parallel the amount of charge that flows from the smaller capacitor to higher capacitor in μ C is

The earth radiates in the infra-red region of the spectrum. The spectrum is correctly given by

If an electron revolve in the path of a circle of radius of 0.5 x 10 ^{− 10} m at a frequency of 5 x 10 ⁵ cycles/sec. The electric current in the circle is (charge of an electron = 1.6 x 10⁻¹⁹ C)

A bus is moving with a speed of 10 ms⁻¹ on a straight road. A scooterist wishes to overtake the bus in 100 s. If the bus is at a distance of 1 km from the scooterist, with what speed should the scooterist chase the bus?

Two stones are projected with the same speed but making different angles with the horizontal. Their horizontal ranges are equal. The angle of projection of one is π/3 and the maximum height reached by it is 102 m. Then the maximum height reached by the other in metre is

A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 ms⁻¹. To give an initial upward accleration of 20 ms⁻². the amount of gas ejected per second to supply the needed thrust will be (g=10 ms⁻²)

The M.I. of a body about the given axis is 1.2 kg m² initially the body is at rest. In order to produce a rotational kinetic energy of 1500 joule an angular acceleration of 25 rad/sec² must be applied about that axis for a duration of

Two projectiles are fired at different angles with the same magnitude of velocity, such that they have the same range. At what angles they might have been projected?