OnlineCBT
Physics · PYQ NEET UG 2023
Practice questions & answers
Find a question, read its answer and explanation, then practise related questions.
Physics PYQ NEET UG 2023 · Clear filters
50 questions
Physics · PYQ NEET UG 2023
A wire carrying a current \( I \) along the positive \( x \)-axis has length \( L \). It is kept in a magnetic field \( \vec{B} = (2\hat{i} + 3\hat{j} - 4\hat{k})\text{ T} \). The magnitude of the magnetic force acting on the wire is :
Read answer →Physics · PYQ NEET UG 2023
Two bodies of mass \( m \) and \( 9m \) are placed at a distance \( R \). The gravitational potential on the line joining the bodies where the gravitational field equals zero, will be (\( G = \) gravitational constant) :
Read answer →Physics · PYQ NEET UG 2023
An ac source is connected to a capacitor \( C \). Due to decrease in its operating frequency :
Read answer →Physics · PYQ NEET UG 2023
The ratio of square of radius of gyration of a solid sphere of mass \( M \) and radius \( R \) about its own axis to the square of radius of gyration of the thin hollow sphere of same mass and radius about its axis is :
Read answer →Physics · PYQ NEET UG 2023
The amount of energy required to form a soap bubble of radius \( 2\text{ cm} \) from a soap solution is nearly : (surface tension of soap solution \( = 0.03\text{ N m}^{-1} \))
Read answer →Physics · PYQ NEET UG 2023
If \( \oint_S \vec{E} \cdot d\vec{S} = 0 \) over a surface, then :
Read answer →Physics · PYQ NEET UG 2023
Light travels a distance \( x \) in time \( t_1 \) in air and \( 10x \) in time \( t_2 \) in another denser medium. What is the critical angle for this medium?
Read answer →Physics · PYQ NEET UG 2023
A satellite is orbiting just above the surface of the earth with period \( T \). If \( d \) is the density of the earth and \( G \) is the universal constant of gravitation, the quantity \( \frac{3\pi}{Gd} \) represents :
Read answer →Physics · PYQ NEET UG 2023
Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The coefficient of static friction between the body and the floor is \( 0.15 \) (\( g = 10\text{ m s}^{-2} \)).
Read answer →Physics · PYQ NEET UG 2023
The angular acceleration of a body, moving along the circumference of a circle, is :
Read answer →Physics · PYQ NEET UG 2023
A vehicle travels half the distance with speed \( v \) and the remaining distance with speed \( 2v \). Its average speed is:
Read answer →Physics · PYQ NEET UG 2023
In a series \( LCR \) circuit, the inductance \( L \) is \( 10\text{ mH} \), capacitance \( C \) is \( 1\text{ }\mu\text{F} \) and resistance \( R \) is \( 100\text{ }\Omega \). The frequency at which resonance occurs is :
Read answer →Physics · PYQ NEET UG 2023
The temperature of a gas is \( -50^\circ\text{ C} \). To what temperature the gas should be heated so that the rms speed is increased by 3 times?
Read answer →Physics · PYQ NEET UG 2023
An electric dipole is placed as shown in the figure. The electric potential (in \( 10^2\text{ V} \)) at point P due to the dipole is (\( \varepsilon_0 = \text{permittivity of free space and } \frac{1}{4\pi\varepsilon_0} = K \)):
Read answer →Physics · PYQ NEET UG 2023
A metal wire has mass \( (0.4 \pm 0.002)\text{ g} \), radius \( (0.3 \pm 0.001)\text{ mm} \) and length \( (5 \pm 0.02)\text{ cm} \). The maximum possible percentage error in the measurement of density will nearly be:
Read answer →Physics · PYQ NEET UG 2023
A bullet is fired from a gun at the speed of \( 280\text{ m s}^{-1} \) in the direction \( 30^\circ \) above the horizontal. The maximum height attained by the bullet is \( (g = 9.8\text{ m s}^{-2}, \sin 30^\circ = 0.5) \) :
Read answer →Physics · PYQ NEET UG 2023
Two thin lenses are of same focal lengths (\( f \)), but one is convex and the other one is concave. When they are placed in contact with each other, the equivalent focal length of the combination will be :
Read answer →Physics · PYQ NEET UG 2023
A Carnot engine has an efficiency of \( 50\% \) when its source is at a temperature \( 327^\circ \, \text{C} \). The temperature of the sink is :
Read answer →Physics · PYQ NEET UG 2023
The minimum wavelength of X-rays produced by an electron accelerated through a potential difference of \( V \) volts is proportional to:
Read answer →Physics · PYQ NEET UG 2023
Given below are two statements: Statement I : Photovoltaic devices can convert optical radiation into electricity. Statement II : Zener diode is designed to operate under reverse bias in breakdown region. In the light of the above statements, choose the most appropriate answer from the options given below :
Read answer →Physics · PYQ NEET UG 2023
Let a wire be suspended from the ceiling (rigid support) and stretched by a weight \( W \) attached at its free end. The longitudinal stress at any point of cross-sectional area \( A \) of the wire is :
Read answer →Physics · PYQ NEET UG 2023
The equivalent capacitance of the system shown in the following circuit is :
Read answer →Physics · PYQ NEET UG 2023
