Long-sight defect could be corrected by using
__________ lens.
A. concave
B. Convex
C. diverging
D. none of these » Read More…
Very High Frequency (VHF) have __________ wavelengths.
A. shorter
B. shortest
C. longer
D. longest
The density of water is __________.
A. 1 g/cm3
B. 1.5 g/cm3
C. 2 g/cm3
D. none of these » Read More…
Radioactivity was discovered by __________.
A. Kelvin
B. Thomson
C. Rutherford
D. Henri Becquerel » Read More…
Malaria is a disease which effects the___________.
A. Heart
B. Lungs
C. Spleen
D. Kidneys » Read More…