Worksheets10class Reflection Test 5
Total questions: 23
Worksheet time: 17mins
Name
Class
Date
1.
When we place an object between P and F of a concave mirror, the hight of the image consider as….
a)
Positive
b)
Negative
c)
Positive or Negative
d)
Neither positive nor negative
2.
Which formula is right for a concave mirror
a)
1/f=uv/u+v
b)
f=uv/(u+v)
c)
f=uv/u-v
d)
1/f=1/u-1/v
3.
Which mirror has the Focus and centre of curveture at the same point
a)
Concave
b)
Convex
c)
Plane mirror
d)
No mirror
4.
The shaving mirrors, dentists mirrors work on, when the object is at
a)
at C
b)
in between C and F
c)
at F
d)
in between f and p
5.
The mirror which has wide field of view is
a)
Concave mirror
b)
Convex mirror
c)
Plane mirror
d)
None of these
6.
The laws of reflection of light are valid for
a)
Plane mirrors only
b)
Concave mirrors pnly
c)
convex mirrors only
d)
all mirrors
7.
Which mirror is used by dentists
a)
Concave
b)
Convex
c)
Plane
d)
None
8.
Which mirrors are used as rear view mirrors
a)
Convex
b)
Concave
c)
Plane
d)
None
9.
Which type of mirrors are used in headlights of vehicles?
a)
Plane
b)
Convex
c)
Concave
d)
None
10.
Concave mirror is used
a)
by Dentists
b)
In car head lights
c)
In car head lights & by Dentists
d)
No answer
11.
Which mirrors were used by Archimedes to burn enemy ships(Convex, Concave, Plane, None)
a)
Convex
b)
Concave
c)
Plane
d)
None
12.
Magnification formula
a)
v/u
b)
v/-u
c)
-v/u
d)
-u/v
13.
For which mirror the magnification is always same?
a)
Plane
b)
Convex
c)
Concave
d)
None
14.
In the case of _____ mirror magnification is always positive
a)
Concave
b)
Convex
c)
Both
d)
None
15.
The image formed by Convex mirror is
a)
Always Erect
b)
Always Inverted
c)
Erect or Inverted
d)
None
16.
The image formed by Concave mirror is
a)
Always Erect
b)
Always Inverted
c)
Erect or Inverted
d)
None
17.
In case of ______________ mirror magnification is always constant
a)
Concave
b)
Convex
c)
Concave and Convex
d)
Plane
18.
In case of ______________ mirror magnification is always between 0 and 1
a)
Concave
b)
Convex
c)
Concave and Convex
d)
Plane
19.
In case of ______________ mirror magnification is always between
a)
Concave
b)
Convex
c)
Concave and Convex
d)
Plane
20.
In case of ______________ mirror magnification is always +1
a)
Concave
b)
Convex
c)
Concave and Convex
d)
Plane
21.
If magnification of concave mirror is <1 , the object was placed at
a)
at C
b)
at F
c)
between C and F
d)
beyond C
22.
When we place an object between P and F of a concave mirror, the hight of the image consider as….
a)
Positive
b)
Negative
c)
Positive or Negative
d)
Neither positive nor negative
23.
Which formula is right for a concave mirror
a)
1/f=uv/u+v
b)
f=uv/(u+v)
c)
f=uv/u-v
d)
1/f=1/u-1/v
100 %
