A camera uses a __________ to form an image.

1. A camera uses a __________ to form an image.

A. convex lens

B. concave lens
C. condenser lens
D. none of these

2. Which from the following is NOT a conductor? 

A. Aluminium
B. Silicon
C. Graphite

D. All are conductors

3. CNG stands for? 

A. Converted Natural Gas
B. Conduced Natural Gas
C. Conducted Natural Gas

D. Compressed Natural Gas