DAE PHY 143 Chapter 9 MCQs

COMMON WITH:

DAE IN PRINTING & GRAPHIC ARTS TECHNOLOGY

Chapter:09 (Spherical Mirrors And Lenses)

Question 1:

The principal focus of a concave mirror is:

virtual real Both a and b none of these

Question 2:

Which type of image is formed by a convex lens on a screen?

Inverted and real Inverted and virtual Upright and real Upright and virtual

Question 3:

Which type of image is produced by the converging lens of human eye if it views a distant object?

Real, erect, same size Real, inverted, diminished Virtual, erect, diminished virtual, inverted, diminished

Question 4:

An object is placed at the center of curvature of a concave mirror. The image produced by the mirror is located:

Between the center of curvature and the focal length At the center of curvature Out beyond the center of curvature At the focal point

Question 5:

If p = 10, q = 30 cm, then magnification will be:

3 5 10 30

Question 6:

The formula for focal length is:

f=R/2 f=R/4 f=R/3 f=R/5

Question 7:

The magnification formula for compound microscope is:

M=q/p M=1+q/p L/f L/f(1+d/f)

Question 8:

The relationship between focal length ‘f’ and radius of curvature ‘r’ of a spherical mirror is:

\(f=2r\) \(f=r/2\) \(f=2{r^2}\) \(f=2{f^2}\)

Question 9:

If an object is placed at C of the concave mirror, then the image formed will be:

At F Behind the mirror At C In between C and F

Question 10:

If an object is placed within the focal length of a concave mirror then the image formed will be:

Real and erect Virtual and inverted Real and behind the mirror Virtual and behind the mirror

Question 11:

The radius of curvature of a concave mirror is 40 cm, its focal length will be equal to:

80 cm 20 cm 40 cm 4 cm

Question 12:

The unit for the power of lens is:

Watt cm meter dioptre

Question 13:

The focal length of a lens is 20 cm; its power in dioptre will be equal to:

20 D 0.5 D 2 D 5 D

Question 14:

If an object is placed in front of a convex lens in between its F and 2F then the image will be:

Virtual Erect Real and inverted Real and erect

NOTE
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INSTRUCTOR
MUHAMMAD BIN JAMEEL
BSC ENGG. CIVIL