A black hole has a very strong _______?
A. Electric Field
B. Magnetic Field
C. Electromagnetic Feild
D. Gravitational field
First artificial satellite was launched on——–
A. 4 Oct 1957
B. 4 Nov 1957
C. 4 Dec 1957
D. None of these
Which of the following planets has maximum number of Satellites.
A. Jupiter
B. Saturn
C. Uranus
D. Venus
The Sun’s mass is mainly consist of which of the following?
A. Hydrogen
B. Nitrogen
C. Carbon dioxide
D. Silicon » Read More…
Which instrument is used for viewing the sun?
A. Stroboscope
B. Helioscope
C. Solograph
D. None of these
In general, Comets have _____ orbits.
A. Elliptical
B. Highly elliptical
C. Circular
D. Parabolic