NEET 1988 Physics Paper: AIPMT

AC Generator & Transformer

• (a)$4\pi^2\text{ mA}$
• (b)$30\text{ mA}$
• (c)$6\text{ mA}$
• (d)$200\text{ mA}$

Energy of the Electron & Energy Levels

• (a)13.6 eV
• (b)27.2 eV
• (c)6.8 eV
• (d)54.4 eV

Kirchhoff's Laws & Measuring Instruments

• (a)$\frac{1}{3}\text{ A}$ and $3\text{ V}$
• (b)$\frac{1}{6}\text{ A}$ and $4\text{ V}$
• (c)$\frac{1}{9}\text{ A}$ and $9\text{ V}$
• (d)$\frac{1}{12}\text{ A}$ and $12\text{ V}$

Ohm's Law, Resistivity & Temperature

• (a)$1 : 3 : 5$
• (b)$5 : 3 : 1$
• (c)$1 : 25 : 125$
• (d)$125 : 15 : 1$

Cathode Rays, Thomson's Experiment & Gas Discharge

• (a)protons
• (b)electrons
• (c)photons
• (d)positrons

Photoelectric Effect: Einstein's Equation

• (a)$4 \times 10^{-19}\text{ J}$
• (b)$1\text{ J}$
• (c)$2 \times 10^{-19}\text{ J}$
• (d)$3 \times 10^{-19}\text{ J}$

Photons: Energy, Momentum & Radiation Pressure

• (a)$hc\lambda$
• (b)$\frac{hc}{\lambda}$
• (c)$\frac{\lambda}{hc}$
• (d)$\frac{\lambda h}{c}$

Lenz's Law, Eddy Currents & Induced Electric Field

• (a)a metal is kept in varying magnetic field
• (b)a metal is kept in steady magnetic field
• (c)a circular coil is placed in a magnetic field
• (d)through a circular coil, current is passed

Electric Charge & Coulomb's Law

• (a)only $-q$ is in stable equilibrium
• (b)all the charges are in stable equilibrium
• (c)all of the charges are in unstable equilibrium
• (d)none of the charges is in equilibrium

Kepler's Laws & Planetary Motion

• (a)$\sqrt{10}$
• (b)$10\sqrt{10}$
• (c)$10$
• (d)$\frac{1}{\sqrt{10}}$

Kepler's Laws & Planetary Motion

• (a)$\frac{r_1+r_2}{4}$
• (b)$\frac{r_1+r_2}{r_1-r_2}$
• (c)$\frac{2r_1r_2}{r_1+r_2}$
• (d)$\frac{r_1+r_2}{3}$

Friction on an Incline

• (a)0.80
• (b)0.75
• (c)0.25
• (d)0.33

Equations of Kinematics

• (a)33.3 km/h
• (b)$20\sqrt{2}$ km/h
• (c)$25\sqrt{2}$ km/h
• (d)35 km/h

Relative Velocity

• (a)12 sec
• (b)8 sec
• (c)15 sec
• (d)10 sec

Biot-Savart Law & Circular Coils

• (a)electric field
• (b)magnetic field
• (c)electric flux
• (d)magnetic flux

Current Loop as a Magnetic Dipole

• (a)inclined at $45^\circ$ to the magnetic field
• (b)inclined at any arbitrary angle to the magnetic field
• (c)parallel to the magnetic field
• (d)perpendicular to magnetic field

Law of Radioactive Decay

• (a)1.0 micro curie
• (b)0.5 micro curie
• (c)4 micro curie
• (d)8 micro curie

Radioactive Decays: Alpha, Beta, Gamma

• (a)${}^{115}_{46}\text{Pa}$
• (b)${}^{114}_{49}\text{In}$
• (c)${}^{113}_{50}\text{Sn}$
• (d)${}^{115}_{50}\text{Sn}$

Periodic Motion & SHM Basics

• (a)$A\cos(kx)$
• (b)$Ae^{-kx}$
• (c)$Akx$
• (d)$-Akx$

Spherical Surfaces & Thin Lenses

• (a)$10\text{ cm}$
• (b)$2.5\text{ cm}$
• (c)$5\text{ cm}$
• (d)$7.5\text{ cm}$

Rolling Motion

• (a)total kinetic energy is conserved
• (b)the angular momentum of the sphere about the point of contact with the plane is conserved
• (c)only the rotational kinetic energy about the centre of mass is conserved
• (d)angular momentum about the centre of mass is conserved

Rotational Kinetic Energy, Work & Power

• (a)$\frac{1}{2}mr^2\omega^2$
• (b)$mr\omega^2$
• (c)$mr^2\omega^2$
• (d)$\frac{1}{2}mr\omega^2$

Intrinsic & Extrinsic Semiconductors

• (a)non metal
• (b)metal
• (c)insulator
• (d)none of these

P-N Junction Diode

• (a)the positive pole of the battery is joined to the p-semiconductor and negative pole to the n- semiconductor
• (b)the positive pole of the battery is joined to the n-semiconductor and p-semiconductor
• (c)the positive pole of the battery is connected to n-semiconductor and p-semiconductor
• (d)mechanical force is applied in the forward direction

Gas Laws & Ideal Gas Equation

• (a)$1 : 2$
• (b)$1 : 1$
• (c)$2 : 1$
• (d)$4 : 1$

Heat, Work & First Law of Thermodynamics

• (a)work
• (b)energy
• (c)heat
• (d)all of these

Calorimetry, Latent Heat & Mechanical Equivalent of Heat

• (a)$31^{\circ}\text{C}$
• (b)$22^{\circ}\text{C}$
• (c)$19^{\circ}\text{C}$
• (d)$15^{\circ}\text{C}$

Units & Dimensions

• (a)$[\mathrm{M^{0}L^{0}T^{1}}]$
• (b)$[\mathrm{M^{0}L^{0}T^{0}}]$
• (c)$[\mathrm{M^{0}L^{0}T^{-1}}]$
• (d)not expressible in terms of MLT

Units & Dimensions

• (a)$[\mathrm{ML^{2}T^{-2}}]$
• (b)$[\mathrm{ML^{-2}T^{-1}}]$
• (c)$[\mathrm{MLT^{-1}}]$
• (d)$[\mathrm{ML^{2}T^{-1}}]$

Progressive Wave Equation

• (a)$v = 5\text{ cm}$
• (b)$\lambda = 18\text{ cm}$
• (c)$a = 0.04\text{ cm}$
• (d)$f = 50\text{ Hz}$

Speed of Waves

• (a)wavelength of sound only
• (b)density and elasticity of gas
• (c)intensity of sound waves only
• (d)amplitude and frequency of sound

Polarisation

• (a)Interference
• (b)Diffraction
• (c)Coherence
• (d)Polarisation

Wave Theory, Wavefronts & Doppler Effect

• (a)Refraction
• (b)Reflection
• (c)Diffraction
• (d)Origin of spectra