Fill in the blanks:
a. An image that cannot be obtained on a screen is called ____________.
b. Image formed by a convex _______ is always virtual and smaller in size.
c. An image formed by a _________ mirror is always of the same size as that of the object.
d. An image which can be obtained on a screen is called a _____ image.
e. An image formed by a concave _______ cannot be obtained on a screen.
Mark ‘T’ if the statement is true and ‘F’ if it is false:
a. We can obtain an enlarged and erect image by a convex mirror. (T/F)
b. A concave lens always form a virtual image. (T/F)
c. We can obtain a real, enlarged and inverted image by a concave mirror. (T/F)
d. A real image cannot be obtained on a screen. (T/F).
e. A concave mirror always from a real image. (T/F)
Match the items given in Column I with one or more items of Column II.
a. A plane mirror
i. Used as a magnifying glass.
b. A convex mirror
ii. Can form image of objects spread over a large area.
c. A convex lens
iii. Used by dentists to see enlarged image of teeth.
d. A concave mirror
iv. The image is always inverted and magnified.
e. A concave lens
v. The image is erect and of the same size as the object.
vi. The image is erect and smaller in size than the object.
Choose the correct option in question
The rear-view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m/s. The driver sees in his rear-view mirror the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be
i. 1m/s ii. 2m/s
iii. 4m/s iv. 8ms/