NEET (UG) entrance exam Question Bank Solutions for Physics

When fluids are heated from the bottom, convection currents are produced because:  

A satellite is orbiting close to the earth above the equator with a period of rotation of 1.5 hours. If it is above a point x on the equator at some time, then after how much time will it be above x again?

The figure below shows current in a part of electric circuit. The current I is ______.

A body A of mass M while falling vertically downward under gravity breaks into two parts a body B of mass `"M"/2` and a body C of mass `"M"/2`. The centre of mass B and C taken together shifts compared to that of body A towards.

Kirchhoff s second law is based on the law of conservation of ______

Calculate the binding energy per nucleon of ₂₀Ca⁴⁰ nucleus M(₂₀Ca⁴⁰) = 39.962589 u, m_n = 1.008665 u, m_p = 1.007825 u:

The truth table for the following logic circuit is:

If Q = `"X"^"n"/"Y"^"m"` and Δx is absolute error in the measurement of X, Δy is absolute error in the measurement of Y, then absolute error ΔQ in Q is ______.

The relative density of a metal may be found by hanging a block of the metal from a spring balance and nothing that in air, the balance reads (5 .00 ± 0.05)N while in water, it reads (4.00 ± 0.05)N. The relative density would be quoted as ______.

In which of the following convection will not take place primarily?

A nucleus with mass number 240 breaks into two fragments each of mass number 120, the binding energy per nucleon of unfragmented nuclei is 7.6 MeV while that of fragments is 8.5 MeV. The total gain in the Binding Energy in the process is ______.

Three resistors having resistances r₁, r₂ and r₃ are connected as shown in the given circuit. The ratio `i_3/i_1` of currents in terms of resistances used in the circuit is:

For the given circuit, the input digital signals are applied at terminals A, B, and C. What would be the output at terminal y?

A nucleus with mass number 240 breaks into two fragments each of mass number 120, the binding energy per nucleon of unfragmented nuclei is 7.6 MeV while that of fragments is 8.5 MeV. The total gain in the Binding Energy in the process is ______

Three resistors having resistances r₁,  r₂ and r₃ are connected as shown in the given circuit. The ratio `"i"_3/"i"_1` of currents in terms of resistances used in the circuit is :

For the given circuit, the input digital signals are applied at the terminals A, B and C. What would be the output at the terminal y?

The maximum and minimum tensions in the string whirling in a circle of radius 2.5 m with constant velocity are in the ratio 5 : 3. Then its velocity is

Heavy radioactive elements eventually turn into ______.

Two identical spheres of mass ' m' are placed at the two vertices of an equilateral triangle. A sphere of mass ' 2 m' is placed at the third vertex. The centre of mass of the whole system will be at [Each side of the triangle is 8 cm]

The excess pressure in a soap bubble of radius R and surface tension T is: