NEET (UG) entrance exam Question Bank Solutions

Molar specific heat of water is C = 74.7 J/mol K, its value in cal/g K is ______. 

A uniform electric field and a uniform magnetic field are produced, pointed in the same direction. An electron is projected with its velocity pointing in the same direction ______

In young 's double slit experiment, the phase difference between the light waves reaching third bright fringe from the central fringe will be ______. (λ = 6000 A)

A proton and α-particle are accelerated through the same potential difference. The ratio of the de-Broglie wavelength λ_p to that λ_α is _______.

The unit of inductance is ______

If v₁ and v₂ are the frequencies of two tuning forks, then the beat frequency is ______.

One can easily weigh the earth by calculating the mass of the earth by using the formula:

The de-Broglie wavelength associated with a material particle when it is accelerated through a potential difference of 150 volt is 1 Å. What will be the de-broglie wavelength associated with the same particle when it is accelerated through a potential difference of 4500 V?

Consider the following statements (A) and (B) and identify the correct answer.

(A) A Zener diode is connected in reverse bias when used as a voltage regulator.

(B) The potential barrier of the p-n junction lies between 0.1 V to 0.3 V.

If force [F], acceleration [A] and time [T] are chosen as the fundamental physical quantities. Find the dimensions of energy.

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 has de-Broglie wavelength λ_d, then ______.

If force [F], acceleration [A], and time [T] is chosen as the fundamental physical quantities. Find the dimensions of energy.

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 has de-Broglie wavelength λ_d, then ______

Consider the following statements (A) and (B) and identify the correct answer.

1. A zener diode is connected in reverse bias, when used as a voltage regulator.
2. The potential barrier of p-n junction lies between 0.1 V to 0.3 V.

Two coils of self inductances 2 mH and 8 mH are placed so close together that the effective flux in one coil is completely linked with the other. The mutual inductance between these coils is ______.

An alpha particle enters a hollow tube of 4 m length with an initial speed of 1 km/s. It is accelerated in the tube and comes out of it with a speed of 9 km/s. The time for which it remains inside the tube is

In a two dimensional motion, instantaneous speed v0 is a positive constant. Then, which of the following are necessarily true?

Select the correct statement.

The wave nature of electrons was experimentally verified by,

A mass m is suspended from a rigid support P by means of a massless string as shown in figure. A horizontal force F is applied at point O of the rope. The system is in equilibrium when the string makes an angle θ with the vertical. Then the relation between the tension T, force F and angle θ is P