Biophysics - Questions and Answers for Competitive Exams | GkSeries

1. Who invented mass spectrometers?

• [A] J.J. Thompson
• [B] Goldstein
• [C] Nikola Tesla
• [D] Aston

Answer: Option [A]

2. Dynamic property of liquids causing internal friction

• [A] Impulse
• [B] Attractive energy
• [C] Relative energy
• [D] Viscocity

Answer: Option [D]

3. Concerns of heat measurement and methods of heat amount measurement

• [A] Viscosity
• [B] Themometry
• [C] Calorimetry
• [D] Elecricity

Answer: Option [C]

4. Wavelength of light is represented as

• [A] lambda
• [B] alpha
• [C] beta
• [D] gamma

Answer: Option [A]

5. The Emission of energy in form of emitted particles, the action known to be

• [A] Emulsification
• [B] Ionization
• [C] Reaction
• [D] Radiation

Answer: Option [D]

6. The lens in the human eye is

• [A] plano convex
• [B] concave convex
• [C] biconcave
• [D] biconvex

Answer: Option [D]

7. Sound is

• [A] electromagnetic wave motion with low frequency
• [B] electromagnetic wave motion with high energy
• [C] mechanical wave motion
• [D] best audible in a vacuum

Answer: Option [C]

8. Phytochrome is a pigment and photoreceptor that plants use to detect

• [A] Dark
• [B] Light
• [C] Temperature
• [D] Heat

Answer: Option [B]

9. Which of the following wavelengths of light is most effective for photosynthesis

• [A] 100 nm to 200 nm
• [B] 200 nm to 300 nm
• [C] 400 nm to 700 nm
• [D] 700 nm to 900 nm

Answer: Option [C]

10. The absorption of ink by blotting paper involves

• [A] viscosity of ink
• [B] capillary action phenomenon
• [C] diffusion of ink through the blotting
• [D] siphon action

Answer: Option [B]

11. Nuclear sizes are expressed in a unit named

• [A] Fermi
• [B] angstrom
• [C] tesla
• [D] none of the above

Answer: Option [A]

12. Stars appears to move from east to west because

• [A] all stars move from east to west
• [B] the earth rotates from west to east
• [C] the earth rotates from east to west
• [D] the background of the stars moves from west to east

Answer: Option [B]