Q8. Myopia, or shortsightedness, occurs when distant objects get focussed slight

Question

Q8. Myopia, or shortsightedness, occurs when distant objects get focussed slightly in front of your retina. This must mean the curvature of the lens in your eye
A) has too small a curvature
B) has too large a curvature

C) is concave
D) is perfectly flat

Q9. If the temperature of a gas in a fixed volume container is increased from 0° C to 300° C the pressure

A) stays the same
B) approximately doubles
C) becomes 300 times greater D) becomes infinite

Q10. A beam of light travelling through a vacuum enters a glass block. Which of the following is true?

A) Its velocity remains constant B) Its velocity increases
C) Its velocity decreases
D) Its velocity approaches zero

Q11. Superconductors conduct A) electrons

B) protons
C) photons
D) microwaves

Q12. A whole-body dose of radiation of 2.5 Sv
A) would kill you within an hour
B) is completely safe
C) increases your chances of a fatal cancer by 50%
D) is the total dose we receive in a year from natural radiation

Q13. High temperature superconductors operate at approximately: A) room temperature
B) 4 K
C) 92 K

D) 2000 K

Q14. If the Earth warms by 2.5 degrees on average, and neglecting the effects of melt ice, the average depth of the oceans

E) increases

F) decreases

G) stays the same

H) increases in the northern hemisphere and decreases in the southern

hemisphere

Explanation / Answer

8) D

9) C

10) C

11) A

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.