A SCUBA diver takes a deep breath at a depth of 30 m and then shoots to the surf

Question

A SCUBA diver takes a deep breath at a depth of 30 m and then shoots to the surface without exhaling. What happens to the lung volume on the way back to the surface? a) It doubles b) It tripples c) It quadruples d) It quadruples e) It stays the same Blood in an artery Bows from a wider to a narrower region. What can you say about the local blood pressure? (a) it increases b) it decreases c) it stays the same Which of the following can not be used as magnifying glass? (a) plano-convex lens (b) concave mirror (c) convex mirror (d) meniscus lens You compress a gas in a closed contained isothermally. Which of the following is NOT true? (a) The internal energy does not change (b) Heat is transferred out of the gas (c) You perform work on the gas from the outside (W>0) (d) There is no heat exchange since the temperature does not change. A blue laser beam travels from glass to water and is incident at the interface exactly at the critical angle for total internal

Explanation / Answer

11)

option (d) It stays same

12)

pressure decreases

13)

convex mirror , it always forms diminished images

14)

In isothermal temperature is constant heat exchanges

option (d)

15)

option (a)

16)

option (b)

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