## 1. A particle of mass m is released from rest and follows a parabolic path as shown. Assuming that the displacement of the mass from the origin is small, which graph correctly depicts the position of the particle as a function of time?

AIPMT 2011 Work, Energy And Power

## 2. A body when released from the top of a tower of height $h$ reaches the ground in time 1 second. Time in second at which it is a height $\dfrac{h}{2}$ above the groun.d is

COMEDK 2008 Motion In A Straight Line

## 3. vrms , vav and vmp are root mean square, average and most probable speeds of molecules of a gas obeying Maxwellian velocity distribution. Which of the following statements is correct?

AIIMS 2004 Kinetic Theory

## 4. In a parallel plate capacitor, the capacity increase if

Maharashtra CET 2010 Electrostatic Potential And Capacitance

## 5. A long solid non-conducting cylinder of radius R is charged such that the volume charge density is proportional to r where r is the distance from axis. The electric field E at a distance r (r < R) will depend on r as

AIIMS 2018 Electric Charges And Fields

## 6. Optical pumping means transferring electrons

COMEDK 2012 Atoms

## 7. A long straight wire carries a certain current and produces a magnetic field $2\times10^{-4} \dfrac{Weber}{m^{2}}$ at a perpendicular distance of 5 cm from the wire. An electron situated at 5 cm from the wire moves with a velocity $10^7$ m/s towards the wire along perpendicular to it. The force experienced by the electron will be (charge on electron 1.6 x $10^{-19}$ C) :

NEET 2013 Moving Charges And Magnetism

## 8. A rectangular, a square, a circular and an elliptical loop, all in the (x-y) plane, are moving out of a uniform magnetic field with a constant velocity $\overrightarrow{V}$ = vi. The magnetic field is directed along the negative z axis direction. The induced emf, during the passage of these loops, out of the field region, will not remain constant for

AIPMT 2009 Electromagnetic Induction

## 9. A x B =B x A, then the angle between A and B is

BHU 2003 Motion In A Plane

## 10. A simple pendulum has a time period $T_1$ when on the earth's surface and $T_2$ when taken to a height R above the earth's surface, where R is the radius of the earth. The value of $T_2/T_1$ is

JIPMER 2015 Gravitation

AIIMS 2006 Waves

## 12. Two parallel wires $1 \, m$ apart carry currents of $1 \, A$ and $3 \, A$ respectively in opposite directions. The force per unit length acting between these two wires is

KCET 2015 Moving Charges And Magnetism

## 13. Assertion : If objective and eye lenses of a microscope are interchanged then it can work as telescope.Reason : The objective lens of telescope has small focal length.

AIIMS 2010 Ray Optics And Optical Instruments

## 14. A block of mass m = 2 kg is pulled by a force F = 40 N upwards through a height h = 2 m. Find the work done on the block by the applied force F and its weight mg. (g = $10 ms^{-2}$)

EAMCET 2008 Work, Energy And Power

## 15. A small disc of radius 2 cm is cut from a disc of radius 6 cm. If the distance between their centres is 3.2 cm, what is the shift in the centre of mass of the disc?

JIPMER 2011 System Of Particles And Rotational Motion

## 16. A car covers the first half distance between two places at 40 kmph and the other half at 60 kmph. The average speed of the car is

COMEDK 2014 Motion In A Straight Line

## 17. A pan filled with hot food cools from $94 ^{\circ}C$ to $86^{\circ}C$ in 2 minutes. When the room temperature is $20 ^{\circ}C$. How long will it cool from $74 ^{\circ}C$ to $66 ^{\circ}C$ ?

KCET 2016 Thermal Properties Of Matter

## 18. A mirror forms a real image of unit magnification. Its nature is

KCET 1998 Wave Optics

## 19. y component of velocity is 20 $rns^{ - 1}$ and x component of velocity is 10 $ms^{ - 1}$ . The direction of motion of the body with the horizontal at this instant is

Manipal 2003 Motion In A Plane

## 20. For the given circuit of p-n junction diode which is correct

AIPMT 2002 Semiconductor Electronics: Materials Devices And Simple Circuits

AIIMS 2015 Waves

## 22. An electron beam has a kinetic energy equal to 100 eV. Find its wavelength associated with a beam, if mass of electron $=9.1 \times 10^{-31}kg$ and $1 \, eV=1.6 \times 10^{-19}J/eV.$ (Planck's constant $=6.6 \times 10^{-34} Js)$

AIPMT 1996 Dual Nature Of Radiation And Matter

## 23. For a nuclear reactor to run in critical condition the reproduction factor k should be

AIIMS 2011 Nuclei

## 24. According to Newton's Corpuscular Theory, the speed of light is

KCET 2009 Wave Optics

## 25. A point P consider at contact point of a wheel on ground which rolls on ground without slipping then value of displacement of point P when wheel completes half of rotation (If radius of wheel is 1 m)

AIPMT 2002 System Of Particles And Rotational Motion

## 26. Percentage errors in the measurement of mass and speed are 2% and 3% respectively. The error in the estimate of kinetic energy obtained by measuring mass and speed will be

AIPMT 1995 Physical World, Units and Measurements

## 27. In the circuit shown, the magnitude and direction of the flow of current is

COMEDK 2004 Current Electricity

## 28. Tangent galvanometer is used to measure

AIPMT 2001 Magnetism And Matter

## 29. The Young's modulus of the material of a wire is equal to the

KEAM 2009 Mechanical Properties Of Solids

## 30. An object of mass 0.2 kg executes simple harmonic motion along $x$-axis with frequency of 25/$\pi$ Hz. At the position $x$ = 0.04 m, the object has a kinetic energy of 0.5 J and potential energy of 0.4 J. The amplitude of oscillation is equal to

JIPMER 2011 Oscillations