General Science Page-11

101) Video camera is used to convert
(A) Heat into x-rays
(B) Sound into electrical signals
(C) Electrical signals into pictures
(D) Picture into electrical signals

102) The range of a 100 meter high T.V. transmitter ariel is about
(A) 10 km
(B) 20 km
(C) 30 km
(D) 50 km

103) The waves used for sending signals to the satellite from ground station are
(A) X-rays
(B) Sound waves
(C) Micro waves
(D) Ultraviolet rays

104) A mobile phone sends and receives messages through
(A) Sound waves
(B) Micro waves
(C) Ultraviolet waves
(D) Radio waves

105) The procedure of crushing the gallstones and kidney stone by laser is called
(B) Kidney surgery
(C) Angiography
(D) Lithotripsy

106) Three dimensional image formed by laser is called
(A) Photograph
(B) Hologram
(C) Two dimensional sketch
(D) Photocopy

107) Optical fibres are the fine strands of
(A) Glass
(B) Iron
(C) Calcium
(D) Mercury

108) The satellites which revolves in such an orbit, so that they move with earth rotation are called
(A) Geo satellites
(B) Stationary satellites
(C) Earth-space satellites
(D) Geo-stationary satellites

109) Radar transmits short pulses of high frequency, which are called
(A) Infrared waves
(B) Radio waves
(C) Ultraviolet waves
(D) Sound waves

110) The ray with high penetrating power is
(A) α rays
(B) β rays
(C) γ rays
(D) x-rays

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