Worksheets1st 2nd chapter of 10th class
Total questions: 13
Worksheet time: 7mins
What reaction has the following general formula:
AB --> A + B
Combination
Decomposition
Single Replacement
Double Replacement
Combustion
Identify the following chemical reaction.
3 HBr + 1 Al(OH)3 ----> 3 H2O + 1 AlBr3
Synthesis (or combination)
Decomposition
Single displacement
Double displacement
A full length image of a distant tall building can definitely be
seen by using
concave mirror
convex mirror
plane mirror
both concave and plane mirror
Under which of the following conditions a concave mirror can form an image larger than the actual object?
When object is kept at a distance greater than its radius of
curvature
When object is placed between the focus and centre of curvature
When object is kept at a distance less than its focal length
When the object is kept at a distance equal to its radius of
curvature
Magnification produced by a rear view mirror fitted in vehicles
is less than one
is more than one
is equal to one
can be more than or less than one depending upon the position of the object in front of it
Real image is always
Erect
Real
Inverted
Virtual
Which type of image formed by plane mirror?
Same size
Erect
Virtual
All of the above
When an obj is placed at focus then which type of image is formed?
Real
Virtual
Inverted
Both (1)and (3)
Which mirror has a wider field of view?
Convex
Concave
Plane
If an object is placed at a distance of 10 cm in front of a plane mirror how far would it be from its image.
10cm
20cm
30cm
40cm
____ is one of the best reflectors of light.
Gold
Silver
Brass
Aluminium
