light

light

10th Grade

11 Qs

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light

light

Assessment

Quiz

Physics

10th Grade

Practice Problem

Hard

Created by

sunaina Shabeer

Used 6+ times

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11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A point object is placed at a distance of 20 cm from a convex mirror of focal length 20 cm. The image will form at:

at infinity

at focus

at the pole

behind the mirror

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

If the power of a lens is – 2 D, what is its focal length?

+50 cm

-100 cm

-50 cm

+100 cm

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

If the magnification produced by a lens has a negative value, the image will be

virtual and inverted

virtual and erect

real and erect

real and inverted

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A ray of light is travelling from a rarer medium to a denser medium. While entering the denser medium at the point of incidence, it

goes straight into the second medium

bends towards the normal

bends towards the normal

does not enter at all

5.

FILL IN THE BLANK QUESTION

1 min • 1 pt

The angle of incidence for a ray of light having zero reflection angle is

6.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

An object at a distance of 30 cm from a
concave mirror gets its image at the same point. The focal length of the mirror is

7.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

A concave mirror of focal length 20 cm forms an image having twice the size of object. For the virtual position of object, the position of object will be at

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