List of top Physics Questions asked in VITEEE, NEET (UG)

Consider a drop of rain water having mass 1 g falling from a height of 1 km. It hits the ground with a speed of 50 m/s. Take g constant with a value 10 m/s2. The work done by the (i) gravitational force and the (ii) resistive force of air is
The ratio of resolving powers of an optical microscope for two wavelengths λ1 = 4000 Å and λ2 = 6000 Å is
A long solenoid of diameter 0.1 m has 2 × 104 turns per meter. At the centre of the solenoid, a coil of 100 turns and radius 0.01 m is placed with its axis coinciding with the solenoid axis. The current in the solenoid reduces at a constant rate to 0 A from 4 A in 0.05 s. If the resistance of the coil is 10π2 Ω, the total charge flowing through the coil during this time is
Two discs of same moment of inertia rotating about their regular axis passing through centre and perpendicular to the plane of disc with angular velocities ω1 and ω2. They are brought into contact face to face coinciding the axis of rotation. The expression for loss of energy during this process is
Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time t1. On other days, if she remains stationary on the moving escalator, then the escalator takes her up in time t2. The time taken by her to walk up on the moving escalator will be
A beam of light from a source L is incident normally on a plane mirror fixed at a certain distance x from the source. The beam is reflected back as a spot on a scale placed just above the source L. When the mirror is rotated through a small angle θ, the spot of the light is found to move through a distance y on the scale. The angle θ is given by
The two nearest harmonics of a tube closed at one end and open at other end are 220 Hz and 260 Hz. What is the fundamental frequency of the system?
A thin prism having refracting angle 10° is made of glass of refractive index 1.42. This prism is combined with another thin prism of glass of refractive index 1.7. This combination produces dispersion without deviation. The refracting angle of second prism should be
The resistance of a wire is ‘R’ ohm. If it is melted and stretched to ‘n’ times its original length, its new resistance will be
A prism has a refracting angle of 60°. When placed in the position of minimum deviation, it produces a deviation of 30°. The angle of incidence is
Transfer characteristics (output voltage \( V_o \) vs input voltage \( V_i \)) for a base biased transistor in CE configuration is as shown in the figure. For using the transistor as a switch, it is used
A bar magnet of magnetic moment \( M \), is placed in a magnetic field of induction \( B \). The torque exerted on it is
A potentiometer wire, 10 m long, has a resistance of 400 \( \Omega \). It is connected in series with a resistance box and a 2 V storage cell. If the potential gradient along the wire 0.1 m is V/cm, the resistance unplugged in the box is
On a smooth plane surface (figure) two block A and B are accelerated by up by applying a force 15 N. If mass of B is twice that of A, the force on B is
Resonance frequency of LCR series a.c. circuit is \( f_0 \). Now the capacitance is made 4 times, then the new resonance frequency will become
Two capacitors when connected in series have a capacitance of 3 μF, and when connected in parallel have a capacitance of 16 μF. Their individual capacities are
The velocity of efflux of a liquid through an orifice in the bottom of the tank does not depend upon
A charge \( +q \) is at a distance \( L/2 \) above a square of side \( L \). Then what is the flux linked with the surface?
If the light is polarised by reflection, then the angle between reflected and refracted light is
The potential energy of a system increases if work is done
Graph of specific heat at constant volume for a monatomic gas is
In Young's double-slit experiment, the intensity of light at a point on the screen where the path difference is \( \frac{\lambda}{4} \), will be
An A.C. source is connected to a resistive circuit. Which of the following is true?
An electron makes a transition from an excited state to the ground state of a hydrogen-like atom. Then
A milli voltmeter of 25 milli volt range is to be converted into an ammeter of 25 ampere range. The value (in ohms) of necessary shunt will be