SINDH MDCAT 2017 PAPER MDCAT 2017 ( PART 3 ) 1. Incident rays of light parallel to the principal axis of a convex lens, after refraction by the lens, will: Diverge as long as they are close to the lens Converge outside the principal focus Converge at the center of curvature Converge inside the principal focus Converge at the principal focus 2. If two sounds have the same wavelength in air at the same temperature, what other property must they also have in common? I. Intensity II. Amplitude III. Frequency II and III only I only I and II only III only I, II and III 3. Which unit expresses work per unit charge? Watt Hertz Volt Joule Half-life 4. The time of one vibration of a simple pendulum may be decreased by: Decreasing the length of the pendulum Using a heavier bob Using a lighter bob Increasing the length of the pendulum 5. The sum of all forms of molecular energies in a thermodynamic system is known as: Entropy Internal energy Red shift Enthalpy 6. ____ is also known as anti-electron Proton Nucleon Photon Positron 7. When describing the isotopes of the same element, the most accurate statement is that they have: A coexistence limit, that is, no element can have more than three isotopes The same spin The same atomic number but different atomic masses The same atomic mass but different atomic numbers The same chemical properties and therefore can not be separated 8. In Nuclear reactions, we have the conservation of: Mass, energy and momentum Momentum only Mass only Energy only 9. The lightest element which exhibits radioactivity is: Helium Deuteron Tritium Hydrogen 10. Nucleus with an excess of neutrons may decay radioactivity with the emission of: A positron A proton A neutron An electron Loading … Pages: 1 2 3 4 5 6 7 8 9 10
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