DAE PHY 132 Chapter 7 MCQs

COMMON WITH:

DAE IN COMPUTER INFORMATION TECHNOLOGY

Chapter:07 (Light)

Question 1:

The velocity of light is:

\(3 × {10^8} m/s\) \(330 km/s\) \(330 m/s\) \(3 × {10^5} m/s\)

Question 2:

Light waves are:

Mechanical waves Longitudinal waves Electromagnetic waves Matter waves

Question 3:

Corpuscular theory of light was propounded by:

Newton Huygens Einstein Maxwell

Question 4:

Wave theory of light was proposed by:

Newton Huygens Maxwell Einstein

Question 5:

The turning back of a part of light from the boundary of a medium is called:

Refraction Rarefaction Polarization Refraction

Question 6:

The bending of light when it enters from one medium to the other is called:

Reflection Refraction Dispersion Diffraction

Question 7:

The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant for all angles of incidence. This law is known as:

Snell’s law Hook’s law Lenz’s law Law of reflection

Question 8:

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

\(f = 2 r\) \(f = {\frac{r}{2}}\) \(f = 2{r^2}\) \(R = 2{f^2}\)

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

Question 15:

The least distance of distinct vision is:

20 cm 25 cm 15 cm 5 cm

Question 16:

A convex lens of short focal length is used as:

Simple microscope Compound microscope Simple telescope Sextant

Question 17:

Magnifying power ‘M’ of a simple microscope is equal to:

\(1 + \frac{q}{f}\) \(1 + \frac{d}{f}\) \(1 - \frac{d}{f}\) \(1 - \frac{q}{f}\)

Question 18:

The phenomenon of bending of incident light towards the geometrical shadow of a sharp wedge is called:

Dispersion of light Interference of light Polarization of light Diffraction of light

Question 19:

To measure the height of distant objects we use:

Camera Telescope Microscope Sextant

NOTE
If you find any mistake in them, do tell in the comment, so that it can be corrected.

If you face any issues feel free to contact me on WhatsApp
03129671316, 03085507292

If you want more improvement
Share feedback in the comment

INSTRUCTOR
MUHAMMAD BIN JAMEEL
BSC ENGG. CIVIL