The instrument which i specially design for recording earth quake wave is called seismograph which measure earth quake waves on a ____________
(A) Diatonic scale
(B) Fahrenheit Scale
(C) Richter scale
(D) Celsius Scale
(D) None of these
Myopia is a defect of Human eye it can be corrected by using a lens called
(A) Convex lens
(B) Concave lens
(C) Cylindrical lens
(D) Plano convex lens
(D) None of these
Night vision is possible with the help of ___________
(A) Red light
(B) Violet light
(C) Infrared Rays
(D) Ultra violet Light
(D) None of these
A body can escape the gravitational pull of the earth if it is thrown up with a velocity of
(A) 25 miles per sec
(B) 60 miles per sec
(C) 7 miles per sec
(D) 10 miles per sec
(D) None of these
A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect
(A) Current
(B) Voltage
(C) Nuclear Radiation
(D) power
(D) None of these
Magnifying power of a simple microscope can be increased by
(A) increasing focal length of the lens
(B) Decreasing focal length of the lens
(C) Lens of large aperture
(D) lens of short aperture
(D) None of these
Twinkling of stars is caused by
(A) Reflection of light
(B) Polarization of light
(C) refraction of light
(D) Interference of light
(D) None of these
The deepest place on earth is ____________
(A) Trench
(B) Mariana Trench
(C) Mangrove
(D) Groove
(D) None of these
Lactometer is a type of Hydrometer which is used to measure the specific gravity of _________
(A) Honey
(B) Water
(C) Milk
(D) olive oil
(D) None of these