A ray of light strikes a plane mirror at an angle of incidence (i). Determine in terms of (i) the angle of deviation of the ray after reflection from the mirror.
A. i B. 2i C. 90° − i D. 90° + i E. 180° − 2i Correct Answer: Option E = 180° − 2i
Which of the following instruments is used to measure relative humidity?
A. Hydrometer B. Barometer C. Manometer D. Hypsometer E. Hygrometer Correct Answer: Option E – Hygrometer
Which of the following best explains why a person suffers a more severe burn when his skin is exposed to steam than when boiling water pours on his skin?
A. Steam is at a higher temperature than boiling water B. Steam possesses greater heat energy per unit mass than boiling water C. Steam spreads more easily over a wider area of the skin man boiling water D. Steam penetrates more deeply into the skin than boiling water...A gas which obeys Charles’ law exactly has a volume of 283 cm³ at 10°C. What is its volume at 30°C?
A. 142cm³ B. 293cm³ C. 303cm³ D. 566cm³ E. 849cm³ Correct Answer: Option C – 303cm³Products
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