Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons? A. 1.8 km, 0.15 km B. 2.2 km, 0.20 km C. 2.8 km, 0.25 km D. 3.3 km, 0.30 km | General Knowledge | Funtimejokes.net

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Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons? A. 1.8 km, 0.15 km B. 2.2 km, 0.20 km C. 2.8 km, 0.25 km D. 3.3 km, 0.30 km

Question:- Intensity of sound at a point is ____ its distance from the source. A. directly proportional to B. inversely proportional to C. directly proportional to square of D. inversely proportional to square of

Answer:- Option D

Question:- Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open A. at sea level B. at the top of Mt. Everest C. at a place in a valley below sea level D. in an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level

Answer:- Option C

Question:- Radio telescopes are better than optical telescopes because A. they can detect faint galaxies which no optical telescope can B. they can work even in cloudy conditions C. they can work during the day and night D. All of the above

Answer:- Option D

Question:- Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit A. X-rays B. ultraviolet light C. visible light D. radio waves

Answer:- Option C

Question:- Mercury is commonly used as a thermometric fluid rather than water because A. specific heat of mercury is less than water B. specific heat of mercury is more than water C. mercury has greater visibility than water D. density of mercury is more than the water

Answer:- Option C

Question:- Optical fibre works on the A. principle of refraction B. total internal reflection C. scattering D. interference

Answer:- Option B

Question:- Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in A. 4.2 seconds B. 42 seconds C. 4.2 years D. 42 years

Answer:- Option C

Question:- Supersonic plane fly with the speed A. less than the speed of sound B. of sound C. greater than the speed of sound D. of light

Answer:- Option C

Question:- Mach number is used in connection with the speed of A. sound B. aircraft C. spacecraft D. ships

Answer:- Option B

Question:- On a stationary sail boat, air is blown from a fan attached to the boat. The boat A. moves in opposite direction in which the air is blown B. does not move C. moves in the same direction in which air blows D. spins around

Answer:- Option B

Question:- Rainbow is due to A. absorption of sunlight in minute water droplets B. diffusion of sunlight through water droplets C. ionisation of water deposits D. refraction and reflection of sunlight by water droplets

Answer:- Option D

Question:- Stars which appear single to the naked eye but are double when seen through a telescope are A. novas and supernovas B. binaries C. asteroids D. quasars

Answer:- Option B

Question:- ML2T-2 is the dimensional formula for A. moment of inertia B. pressure C. elasticity D. couple acting on a body

Answer:- Option D

Question:- Solar eclipse will take place when A. the sun is between the moon and the earth B. the earth is between the moon and the sun C. the moon is between the sun and the earth D. the moon does not lie on the line joining the sun and the earth

Answer:- Option C