List of top Questions asked in NEET (UG)- 2021

The escape velocity from the Earth's surface is $v$. The escape velocity from the surface of another planet having a radius, four times that of Earth and same mass density is :

The right option for the statement ''Tyndall effect is exhibited by'', is :

The structures of beryllium chloride in solid state and vapour phase, are :

Twenty seven drops of same size are charged at $220\, V$ each. They combine to form a bigger drop. Calculate the potential of the bigger drop.

Which one of the following belongs to the family Muscidae ?

The maximum temperature that can be achieved in blast furnace is :

Match Column - I with Column - II. Choose the correct answer from options given below.

Match List - I with List - II. Choose the correct answer from the options given below.

Match List-I with List-II. Choose the correct answer from the options given below.

Gemmae are present in:

A screw gauge gives the following readings when used to measure the diameter of a wire Main scale reading : 0 mm Circular scale reading: 52 divisions Given that 1 mm on the main scale corresponds to 100 divisions on the circular scale. The diameter of the wire from the above data is

A spring is stretched by 5 cm by a force of 10 N. The time period of the oscillations, when a mass of 2 kg is suspended by it, is

The equivalent capacitance of the combination shown in the figure is

A convex lens ‘A’ of focal length 20 cm and a concave lens ‘B’ of focal length 5 cm are kept along the same axis with a distance ‘d’ between them. If a parallel beam of light falling on ‘A’ leaves ‘B’ as a parallel beam, then the distance ‘d’ in cm will be

Find the value of the angle of emergence from the prism. The refractive index of the glass is \(\sqrt3\)

For a plane electromagnetic wave propagating in x-direction, which one of the following combination gives the correct possible directions for electric field (E) and magnetic field (B) respectively

If E and G respectively denote energy and gravitational constant, then \(\frac{E}{G}\) has the dimensions

A dipole is placed in an electric field as shown. In which direction will it move

Match Column - I and Column - II and choose the correct match from the given choices. 

An electromagnetic wave of wavelength ‘λ’ is incident on a photosensitive surface of negligible work function. If ‘m’ mass is of photoelectron emitted from the surface that has de-Broglie wavelength λ_d, then

Polar molecules are the molecules :

A thick current-carrying cable of radius ‘R’ carries current ‘I’ uniformly distributed across its cross-section. The variation of magnetic field B(r) due to the cable with the distance ‘r’ from the axis of the cable is represented by 

 Match List - I with List - II

 Choose the correct answer from the options given below

A capacitor of capacitance ‘C’, is connected across an ac source of voltage V, given by V=V₀sinωt The displacement current between the plates of the capacitor, would then be given by

In a potentiometer circuit, a cell of EMF 1.5 V gives a balance point at 36 cm length of wire. If another cell of EMF 2.5V replaces the first cell, then at what length of the wire, the balance point occurs