NEET 1997 Physics Paper: AIPMT

AC Generator & Transformer

• (a)$2\text{ V},\ 50\text{ Hz}$
• (b)$2\text{ V},\ 5\text{ Hz}$
• (c)$200\text{ V},\ 50\text{ Hz}$
• (d)$200\text{ V},\ 500\text{ Hz}$

Power, Power Factor & Wattless Current

• (a)$V \cdot I$
• (b)depends on phase angle between $V$ and $I$
• (c)$\frac{1}{2} \times V \cdot I$
• (d)$\frac{1}{\sqrt{2}} \times V \cdot I$

Bohr Model: Orbits, Speed & Angular Momentum

• (a)twice
• (b)4 times
• (c)same
• (d)half.

Energy of the Electron & Energy Levels

• (a)$-27.2$ eV
• (b)$-52.4$ eV
• (c)$-3.4$ eV
• (d)$-6.8$ eV.

Centre of Mass of Discrete Particles

• (a)position of the particles
• (b)relative distances between the particles
• (c)masses of the particles
• (d)forces acting on the particle

Electrical Power & Heating Effect

• (a)$36 \times 10^{-5}\text{ J}$
• (b)$36 \times 10^{-4}\text{ J}$
• (c)$36 \times 10^{5}\text{ J}$
• (d)$36 \times 10^{3}\text{ J}$

Electrical Power & Heating Effect

• (a)$100\text{ W}$
• (b)$125\text{ W}$
• (c)$64\text{ W}$
• (d)$80\text{ W}$

Electrical Power & Heating Effect

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

Kirchhoff's Laws & Measuring Instruments

• (a)momentum
• (b)angular momentum
• (c)charge
• (d)energy

Kirchhoff's Laws & Measuring Instruments

• (a)$2/3\text{ A}$
• (b)$1\text{ A}$
• (c)$1/8\text{ A}$
• (d)$2/9\text{ A}$

Ohm's Law, Resistivity & Temperature

• (a)$CD$
• (b)$DE$
• (c)$AB$
• (d)$BC$

Ohm's Law, Resistivity & Temperature

• (a)wire of cross-sectional area $2A$
• (b)wire of cross-sectional area $\frac{A}{2}$
• (c)wire of cross-sectional area $A$
• (d)same in all three cases

Cathode Rays, Thomson's Experiment & Gas Discharge

• (a)416.6 cal
• (b)6.636 cal
• (c)$1.602 \times 10^{-17}$ J
• (d)$1.6 \times 10^{4}$ J.

Photoelectric Experiment: Intensity, Stopping Potential & Graphs

• (a)The photocurrent increases with intensity of light
• (b)The stopping potential increases with increase of incident light
• (c)The current in photocell increases with increasing frequency
• (d)The photocurrent is proportional to the applied voltage.

Speed of EM Waves in a Medium

• (a)$\sqrt{\frac{\varepsilon_0 \mu_0}{\varepsilon \mu}}$
• (b)$\sqrt{\frac{\varepsilon \mu}{\varepsilon_0 \mu_0}}$
• (c)$\sqrt{\frac{\varepsilon_0 \mu}{\varepsilon \mu_0}}$
• (d)$\sqrt{\frac{\varepsilon}{\varepsilon_0}}$

Escape Velocity

• (a)$22.4\text{ km/s}$
• (b)$44.8\text{ km/s}$
• (c)$5.6\text{ km/s}$
• (d)$11.2\text{ km/s}$

Kepler's Laws & Planetary Motion

• (a)4
• (b)5
• (c)2
• (d)3

Thermal Radiation: Black Body, Stefan & Wien

• (a)$(500)^{3}$
• (b)$(500)^{4}$
• (c)$500$
• (d)$(500)^{2}$

Inertia, First & Second Laws

• (a)7 seconds
• (b)5 seconds
• (c)10 seconds
• (d)8 seconds

Bar Magnet & Magnetic Moment

• (a)$M$
• (b)$2M$
• (c)zero
• (d)$0.5\,M$

Equations of Kinematics

• (a)1440 cm
• (b)2980 cm
• (c)20 m
• (d)400 m

Velocity, Acceleration & Variable Motion

• (a)$\frac{a}{3b}$
• (b)zero
• (c)$\frac{2a}{3b}$
• (d)$\frac{a}{b}$

Biot-Savart Law & Circular Coils

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

Force on Current-Carrying Conductors

• (a)$2 \times 10^{-4}\text{ N}$, repulsive
• (b)$2 \times 10^{-7}\text{ N}$, repulsive
• (c)$2 \times 10^{-4}\text{ N}$, attractive
• (d)$2 \times 10^{-7}\text{ N}$, attractive

Magnetic Field of Straight Wires

• (a)one-quarter of the earlier value
• (b)one-half of the earlier value
• (c)twice the earlier value
• (d)same as the earlier value

Moving Charge in a Magnetic Field

• (a)can never reach the pole
• (b)can never reach the equator
• (c)require greater kinetic energy to reach the equator than pole
• (d)require less kinetic energy to reach the equator than pole.

Moving Charge in a Magnetic Field

• (a)move in a circular path with a decreased speed
• (b)move in a circular path with a uniform speed
• (c)get deflected in vertically upward direction
• (d)move in circular path with an increased speed

Nuclear Fission & Fusion

• (a)cadmium
• (b)plutonium
• (c)uranium
• (d)heavy water.

Radioactive Decays: Alpha, Beta, Gamma

• (a)$\beta$-rays
• (b)$\gamma$-rays
• (c)X-rays
• (d)$\alpha$-rays.

Damped, Forced Oscillations & Superposition

• (a)straight motion
• (b)elliptical motion
• (c)circular motion
• (d)none of these

Simple Pendulum

• (a)increases by $1\%$
• (b)decreases by $1\%$
• (c)increases by $2\%$
• (d)decreases by $2\%$

Optical Instruments & the Eye

• (a)$44\text{ cm}$
• (b)$440\text{ cm}$
• (c)$4\text{ cm}$
• (d)$40\text{ cm}$

Prism, Dispersion & Scattering

• (a)$f_v < f_r$
• (b)$f_g > f_r$
• (c)$f_v = f_g$
• (d)$f_g < f_r$

Refraction, Glass Slab & Apparent Depth

• (a)$n,\ 2\lambda$ and $\frac{v}{\mu}$
• (b)$\frac{2n}{\mu},\ \frac{\lambda}{\mu}$ and $v$
• (c)$\frac{n}{\mu},\ \frac{\lambda}{\mu}$ and $\frac{v}{\mu}$
• (d)$n,\ \frac{\lambda}{\mu}$ and $\frac{v}{\mu}$

Torque, Couple & Equilibrium of Rigid Bodies

• (a)$-21\hat{i}+4\hat{j}+4\hat{k}$
• (b)$-14\hat{i}+34\hat{j}-16\hat{k}$
• (c)$14\hat{i}-38\hat{j}+16\hat{k}$
• (d)$4\hat{i}+4\hat{j}+6\hat{k}$

Torque, Couple & Equilibrium of Rigid Bodies

• (a)linear and rotational motion
• (b)no motion
• (c)purely linear motion
• (d)purely rotational motion

Intrinsic & Extrinsic Semiconductors

• (a)indium
• (b)phosphorus
• (c)arsenic
• (d)antimony

Junction Transistor

• (a)$\alpha = \frac{\beta}{1 + \beta}$
• (b)$\alpha = \frac{1 + \beta}{\beta}$
• (c)$\beta = \frac{\alpha}{1 + \alpha}$
• (d)$\beta = \frac{\alpha}{\alpha - 1}$

Logic Gates

• (a)XOR
• (b)NOR
• (c)OR
• (d)NAND

P-N Junction Diode

• (a)$6.76\ \Omega$
• (b)$20\ \Omega$
• (c)$5\ \Omega$
• (d)$5.6\ \Omega$

Heat Engines, Refrigerators & Second Law

• (a)$\frac{373 + 250}{373}$
• (b)$\frac{373 - 250}{373}$
• (c)$\frac{100 + 23}{100}$
• (d)$\frac{100 - 23}{100}$

Thermodynamic Processes

• (a)adiabatic
• (b)equal in all cases
• (c)isothermal
• (d)isobaric

Organ Pipes & Resonance Tube

• (a)$f/2$
• (b)$3f/4$
• (c)$2f$
• (d)$f$

Stationary Waves & Vibrating Strings

• (a)$5\text{ Hz}$
• (b)$10\text{ Hz}$
• (c)$2\text{ Hz}$
• (d)$4\text{ Hz}$

Conservation of Energy

• (a)$\frac{K}{\sqrt{2}}$
• (b)$\frac{K}{2}$
• (c)$2K$
• (d)$K$

Kinetic Energy & Momentum

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

Work by a Constant Force

• (a)$60^\circ$
• (b)$75^\circ$
• (c)$30^\circ$
• (d)$45^\circ$