Class/Course - Medical Entrance

Subject - Physics

Total Number of Question/s - 3470

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  • 1. Physical World and Measurement - Quiz

    1. Of the following quantities, which one has dimensions different from the remaining three?
    a) Energy per unit volume
    b) Force per unit area
    c) Product of voltage and charge per unit volume
    d) Angular momentum

    2. If the dimensions of a physical quantity are given by MaLbTc, then the physical quantity will be
    a) pressure if a=1, b=-1, c=-2
    b) velocity if a=1, b=0, c=-1
    c) acceleration if a=1, b=1, c=-2
    d) force if a=0, b=-1, c=-2

  • 2. Motion in One Dimension - Quiz

    1. The displacement x of a particle varies with time t as x = ae-αt + beβt, a,b,α and β are positive constants. The velocity of the particle will
    a) decrease with time
    b) be independent of α and β
    c) drop to zero when α = β
    d) increase with time

    2. A particle moves in a straight line with a constant acceleration . It changes its velocity from 10ms-1 to 20ms-1 while passing through a distance 135m in t second. The value of t is
    a) 10
    b) 1.8
    c) 12
    d) 9

  • 3. Motion in Two and Three Dimension - Quiz

    1. A stone is tied to a string of length l and is whirled in a verticle circle with the other end of the string as the centre. At a certain instant of time, the stone is at its lowest position and has a speed u. The magnitude of the change in velocity as it reaches a position where the string is horizontal (g being acceleration due to gravity) is 
    a) $\sqrt{2(u^{2} - gl)}$
    b) $\sqrt{u^{2}-gl}$
    c) $u^{2} - \sqrt{(u^{2} - 2gl)}$
    d) $\sqrt{2gl}$

    2. If a vector $2\hat{i} + 3\hat{j} + 8\hat{k}$ is perpendicular to the vector $4\hat{j} - 4\hat{i} + \alpha \hat{k}$, then $\alpha$ is
    a) -1
    b) $\frac{1}{2}$
    c) $-\frac{1}{2}$
    d) 1

  • 4. Laws of Motion - Quiz

    1. If the force on a rocket moving with a velocity of 300m/s is 345N, then the rate of combustion of the fuel ,is
    a) 0.55 kg/s
    b) 0.75 kg/s
    c) 1.15 kg/s
    d) 2.25 kg/s

    2. A player takes 0.1 s in catching a ball of mass 150g moving with velocity of 20m/s. The force imparted by the ball on the hands of the player is
    a) 0.3N
    b) 3N
    c) 30N
    d) 300N

  • 5. Work, Energy and Power - Quiz

    1. A body of mass m moving with velocity 3 km/h collides with a body of mass 2m at rest. Now the coalesced mass starts to move with a velocity
    a) 1 km/h
    b) 2 km/h
    c) 3km/h
    d) 4km/h

    2. An engine pumps water continuously through a hose. Water leaves the hose with a velocity v and m is the mass per unit length of the water jet. What is the rate at which kinetic energy is imparted to water?
    a) $\frac{1}{2}mv^{3}$
    b) mv2
    c) $\frac{1}{2}mv^{2}$
    d) $\frac{1}{2}m^{2}v^{2}$

  • 6. Rotational Motion - Quiz

    1. A wheel has angular acceleration of 3.0 rad/s2 and an initial angular speed of 2.00 rad/s. In a time of 2s it has rotated through an angle (in radian) of
    a) 6
    b) 10
    c) 12
    d) 4

    2. If a sphere is rolling, the ratio of the translational energy to total kinetic energy is given by
    a) 7:10
    b) 2:5
    c) 10:7
    d) 5:7

  • 7. Gravitation - Quiz

    1. The acceleration due to gravity on the planet A is 9 times the acceleration due to gravity on planet B. A man jumps to a height of 2m on the surface on A. What is the height of jump by the same person on the planet B?
    a) 6m
    b) $\frac{2}{3}m$
    c) $\frac{2}{9}m$
    d) 18m

    2. The largest and the shortest distance of the earth from the sun are r1 and r2 . Its distance from the sun when it is perpendicular to the major axis of the orbit drawn from the sun
    a) $\frac{r_{1} + r_{2}}{4}$
    b) $\frac{r_{1} + r_{2}}{r_{1} - r_{2}}$
    c) $\frac{2r_{1}r_{2}}{r_{1} + r_{2}}$
    d) $\frac{r_{1} + r_{2}}{3}$

  • 8. Heat and Thermodynamics - Quiz

    1. The number of translational degree of freedom for a diatomic gas is
    a) 2
    b) 3
    c) 5
    d) 6

    2. The wavelength corresponding to maximum intensity of radiation emitted by a source at temperature 2000K is , λ, then what is the wavelength corresponsding to maximum intensity of radiation at temperature 3000 K ?
    a) $\frac{2}{3}\lambda$
    b) $\frac{16}{81}\lambda$
    c) $\frac{81}{16}\lambda$
    d) $\frac{4}{3}\lambda$

  • 9. Oscillations - Quiz

    1. A particle of mass m oscillations with simple harmonic motion between x1 and x2, the equilibrium position being O.Its potential energy is plotted. It will be as given below in the graph

    2. In SHM restoring force F = -kx, where k is force constant, x is displacement and a is amplitude,  of motion , then total energy depends upon
    a) k,a and m
    b) k,x,m
    c) k,a
    d) k,x

  • 10. Waves - Quiz

    1. An observer moves towards a stationary source  of sound with a speed $\frac{1}{5}th$ of the speed  of sound . The wavelength and frequency of the source emitted are λ and f respectively. The apparent frequency and wavelength recorded by the observer are respectively
    a) f , 1.2λ
    b) 0.8f , 0.8λ
    c) 1.2f , 1.2λ
    d) 1.2f , λ

    2. The equation of a wave is given by
    y = $a \ sin \left (100t - \frac{x}{10} \right )$, where x and y are in metre and t in seconds, then velocity of wave is
    a) 0.1 m/s
    b) 10m/s
    c) 100m/s
    d) 1000m/s

  • 11. Electrostatics - Quiz

    1. In briging an electron towards another electron, the electrostatic potential energy of the system
    a) decreases
    b) increases
    c) remains same
    d) becomes zero

    2. A capacitor of capacity C1 is charged upto potential V volt and then connected in parallel to an uncharged capacitor of capacity C2. The final potential difference across each capacitor will be
    a) $\frac{C_{2}}{C_{1} + c_{2}}$
    b) $\frac{C_{1}}{C_{1} + c_{2}}$
    c) $\left (1 + \frac{C_{2}}{C_{1}} \right )V$
    d) $\left (1 - \frac{C_{2}}{C_{1}} \right )V$

  • 12. Current Electricity - Quiz

    1. For a cell the terminal potential difference is 2.2V when circuit is open and reduces to 1.8V when cell is connected to a resistance R = 5Ω , the internal resistance(r) of a cell is
    a) $\frac{10}{9}\Omega$
    b) $\frac{9}{10}\Omega$
    c) $\frac{11}{9}\Omega$
    d) $\frac{5}{9}\Omega$

    2. Current through 3Ω resistor is 0.8A, then potential drop through 4Ω resistor is 

    a) 9.6 V
    b) 2.6 V
    c) 4.8 V
    d) 1.2 V

  • 13. Thermal and Chemical Effects of Current - Quiz

    1. In electrolysis the mass deposited on an electrode is directly proportional to
    a) current
    b) square of current
    c) concentration of solution
    d) inverse of current

    2. In India electricity in supplied for domestic use at 220V. It is supplied at 110V in USA. If the resistance of a 60W bulb for use in India is R, the resistance of a 60W bulb for use in USA will be
    a) R
    b) 2R
    c) $\frac{R}{4}$
    d) $\frac{R}{2}$

  • 14. Magnetic Effects of Current - Quiz

    1. Two equal electric currents are flowing perpendicular to each other as shown in the figure. AB and CD are pendicular to each order and symmeterically placed with respect to the currents, where do we expect the resultant magnetic field to be zero?

    a) On AB
    b) On CD
    c) On both AB and CD
    d) On both OD and BO

    2. An electron moves in a circular orbit with a uniform speed v. It produces a magnetic field B at the centre of the circle. The radius of the circle is proportional to
    a) $\frac{B}{v}$
    b) $\frac{v}{B}$
    c) $\sqrt{\frac{v}{B}}$
    d) $\sqrt{\frac{B}{v}}$

  • 15. Magnestism - Quiz

    1. The work done in turning a magnet of magnetic moment. M by an abgle of 900 from the meridian, is n times the corresponding work done to turn it through an angle of 600. The value of n is given by
    a) 2
    b) 1
    c) 0.5
    d) 0.25

    2. Two bar magnets having same geometery with magnetic moments M and 2M, are firstly placed in such a way that their similar poles are on the same side, then its period of oscillation is t1 . Now the polarity of one of the megnets is reversed the time period of oscillations becomes T2 , Then
    a) $T_{1} < T_{2}$
    b) $T_{1} > T_{2}$
    c) $T_{1} = T_{2}$
    d) $T_{2} = \infty$

  • 16. Electromagnetic Induction - Quiz

    1. A 100 mH coil carries a current of 1 A. Energy stored in its magnetic field is
    a) 0.5 J
    b) 1 A
    c) 0.05 J
    d) 5 A

    2. A magnetic field of 2 x 10-2T acts at right angles to a coil of area 199 cm2, with 50 turns. The average emf induced in the coil is 0.1 V, when it is removed from the field in t sec. The value of t is
    a) 10 s
    b) 0.1 s
    c) 0.01 s
    d) 1s

  • 17. AC and Electromagnetic Waves - Quiz

    1. A signal emitted by an antenna from a certain point can be received at another point of the surface in the form of
    a) sky wave
    b) ground wave
    c) sea wave
    d) Both (a) and (b)

    2. Which of the following rays are not electromagnetic waves?
    a) β-rays
    b) Heat rays
    c) X-rays
    d) γ-rays

  • 18. Ray Optics and Optical Instruments - Quiz

    1. Colours of thin soap bubbles are due to
    a) Refraction
    b) dispersion
    c) interference
    d) diffraction

    2. The focal lengths of a converging lens measured for violet, green and red colours are fv, fG, fR respectively. We will find
    a) fG > fR
    b) fV < fR
    c) fV > fR
    d) fV = fR

  • 19. Electrons and Photons - Quiz

    1. Monochromatic light of wavelength 667 nm is produced by a helium neon laser. The power emitted is 9 mW. The number of photons arriving per second on the average at a target irradiated by this beam is
    a) 9 × 1017
    b) 3 × 1016
    c) 9 × 1015
    d) 3 × 1019

    2. Number of ejected photoelectron increases with increase
    a) in intensity of light
    b) in wavelength of light
    c) in frequency of light
    d) Never

  • 20. Atomic Physics - Quiz

    1. The total energy of an electron in the first excited state of hydrogen is about -3.4 eV. Its kinetic energy in this state is
    a) -3.4 eV
    b) -6.8 eV
    c) 6.8 eV
    d) 3.4 eV

    2. The energy of ground electronic state of hydrogen atom is -13.6 eV. The energy of the first excited state will be
    a) -54.4 eV
    b) -27.2eV
    c) -6.8 eV
    d) -3.4 eV

  • 21. Nuclear Physics - Quiz

    1. Which of the following is positively charged?
    a) α - particle
    b) β - particle
    c) γ - rays
    d) X - rays

    2. In the nucleus of 11Na23, the numbers of protons, neutrons and electrons are
    a) 11,12,0
    b) 23,12,11
    c) 12,11,0
    d) 23,11,12

  • 22. Solid and Semiconductors Devices - Quiz

    1. Which of the following , when added as an impurity, into the silicon, produces n-type semiconductor?
    a) Phosphorus
    b) Aluminium
    c) Magnesium
    d) Both (b) and (c)

    2. A piece of copper and other of germanium are cooled from the room temperature to 80K, then
    a) resistance in each will increase
    b) resistance in each will decrease
    c) the resistance of copper will increase while that of germanium will decrease
    d) the resistance of copper will decrease while that of germanium will decrease