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- Question
Light travels in a straight line (rectilinear propagation of light). This statement does hold if the medium of travel for light is
Options- A. of variable refractive index
- B. made up of slabs of different refractive indices
- C. homogeneous and transparent
- D. inhomogeneous and transparent
- Correct Answer
- homogeneous and transparent
ExplanationIn vacuum and in homogeneous, transparent media, such as air, water, and glass, light moves in a straight line. When light encounters a boundary between two different transparent media, some light is reflected and some moves from the first into the second medium.
- 1. 'The Vedas contain all the truth was interpreted by
Options- A. Swami Vivekananda
- B. Swami Dayananda
- C. Raja Rammohan Roy
- D. None of the above Discuss
- 2. The only state in India that produces saffron is
Options- A. Assam
- B. Himachal Pradesh
- C. Jammu and Kashmir
- D. Meghalaya Discuss
- 3. The office of the prime minister of India
Options- A. has a constitutional basis
- B. has a statutory basis
- C. has conventional basis
- D. None of the above Discuss
- 4. Of the gross tax revenue of the Union Government the indirect taxes account for nearly
Options- A. 70 per cent
- B. 75 percent
- C. 65 percent
- D. 60 percent Discuss
- 5. The president convenes and prorogues all sessions of Parliament in consultation with
Options- A. the speaker
- B. the prime minister
- C. the prime minister and the leader of the Opposition in Lok Sabha
- D. None of the above Discuss
- 6. The ratio of the weight of water vapour to the total weight of air (including the water vapor) is called
Options- A. specific humidity
- B. mixing ratio
- C. relative humidity
- D. absolute humidity Discuss
- 7. Who invented fuel cells in 1839?
Options- A. Buckminster Fuller
- B. Sir William Grove
- C. Sylvester Graham
- D. Joyce Hall Discuss
- 8. How many wickets Kapil Dev had taken in Test matches when he retired?
Options- A. 450
- B. 430
- C. 435
- D. 434 Discuss
- 9. Isotopes are separated by
Options- A. crystallisation
- B. sublimation
- C. distillation
- D. filtration Discuss
- 10. Who said 'Man is a political animal'?
Options- A. Dante
- B. Aristotle
- C. Socrates
- D. Plato Discuss
More questions
Correct Answer: Swami Dayananda
Correct Answer: Jammu and Kashmir
Correct Answer: has a constitutional basis
Correct Answer: 65 percent
Correct Answer: the prime minister
Correct Answer: specific humidity
Correct Answer: Sir William Grove
Explanation:
Fuel cells were invented in 1839 by Sir William Grove.
Correct Answer: 434
Explanation:
Kapil Dev was the greatest pace bowler India had produced, and their greatest fast-bowling all-rounder.
Correct Answer: distillation
Correct Answer: Aristotle
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