Practice Physics gk set 3 - general science mcq Online Quiz (set-1) For All Competitive Exams
Q-1) Which is not a primary colour?
(a)
(b)
(c)
(d)
Q-2) Sound above what level (in decibel) is considered hazardous noise pollution?
(a)
(b)
(c)
(d)
Q-3) If the length of second’s pendulum is increased by 2%, how many seconds will it lose per day?
(a)
(b)
(c)
(d)
Q-4) Which of the following has the longest wavelength?
(a)
(b)
(c)
(d)
Q-5) In which of the following option sound may not be across travel?
(a)
(b)
(c)
(d)
Q-6) Consider the following statements. - Light of longer wavelength is scattered much more than the light of shorter wavelength.
- The speed of visible light in water is 0.95 times the speed in vacuum.
- Radio waves are produced by rapidly oscillating electrical currents.
- To detect the overspeeding vehicles, police use the Doppler effect of reflected short radio waves.
Which of these statements are correct?
(a)
(b)
(c)
(d)
Q-7) A radio station broadcast at 30 metre band. The frequency of the carrier wave transmitted by this station is
(a)
(b)
(c)
(d)
Q-8) The fastest mode of transfer of heat is
(a)
(b)
(c)
(d)
Q-9) Waves used for telecommunication are
(a)
(b)
(c)
(d)
Q-10) Which of the following is not close to a black body?
(a)
(b)
(c)
(d)