Class-10 ,Light Reflection and Refraction

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Name of Student *

Contact No. *

Q1) The magnification of plane mirror is: *

1 point

Infinite

1.0

0.0

2.0

Q2) Virtual, erect and diminished image are the characteristic features of a: *

1 point

Convex mirror

Plane mirror

Concave mirror

Biconcave mirror

Q3) How does the frequency of a beam of ultra-violet light change when it goes from air into glass? *

1 point

Remains the same

Frequency increases

Frequency decreases

None of these

Q4) Where will the image be formed if the object is at the focus of the concave mirror? *

1 point

At C

Between C and F

Infinity

Beyond C

Q5) A convex lens has a focal length of 40 cm. Calculate its power. *

1 point

2.5 D

6.6 D

4.5 D

3.5 D

Q6) A convex lens is: *

1 point

Thicker at the middle than at the edges.

Called a diverging lens.

Of uniform thickness everywhere.

Thicker at the edges than at the middle.

Q7) Which type of mirror is used in ophthalmoscope to examine throat and ear? *

1 point

Concave

Convex

Plane mirror

Reflecting mirror

Q8) When two prism, one up and one down in contact receive white light. What is the colour of light that will emerge out? *

1 point

Blue colour

Green colour

White colour

Red colour

Q9) What colour will we get while mixing blue with green? *

1 point

Yellow

Black

Pink

Cyan

Q10) Which colour in the visible region has the greatest speed in a optically denser medium? *

1 point

Red

Orange

Violet

Green

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