Answer to Question #86601 in Physics for Jflows

Question #86601

5.The length of the laboratory cannot be measured by ____
a.ruler
b.tape rule
c.protractor
d.no idea

6.An object 2 cm long is placed 40 cm in front of a concave mirror of focal length 15cm. Find the size of image produced.
a.1.0cm
b.1.1cm
c.1.2cm
d.1.3cm

7.A small object is placed on the principal axis of a convex mirror of focal length 10cm. Determine the positon of the image when the object is 15 cm from the mirror?
a.4cm in front of mirror
b.6cm in front of mirror
c.4cm behind the mirror
d.6cm behind the mirror

8.What is the distance between centre of curvature and pole of a concave mirror?
a.radius of curvature
b.focal length
c.pole
d.halfprincipal focus

Expert's answer

5) c. protractor .

6) c. 1.2cm

7) d. 6cm behind the mirror

8) a. radius of curvature