Physical optics

The combination of two or more waves that result in a single wave

• A. diffraction
• B. resonance
• C. reflection
• D. interference

When a wave bends around a barrier or passes through an opening, it is called

• Diffraction
• Reflection
• Refraction
• Interference

Tags

NGSS.MS-PS4-2

To demonstrate the phenomenon of interference, we require two sources

• Of the same frequency and having a constant phase difference

• Of nearly the same frequency

• Of the same frequency

• Of different wavelengths

Tags

NGSS.HS-PS4-1

For Young's double slit experiment, the fifth dark fringe is equivalent to:

• m=4 maximum

• m=5 maximum

• m=4 minimum

• m=5 minimum

'Every points on the wave front of light are the sources of smaller waves called wavelets.' This is the statement of

• Huygen

• Hubble

• Davincci

• Izzat

Which of the following will increase the spacing of Young's double slit fringes

• A blue light is used instead of a red light
• the screen is moved closer to the slits
• the slits are moved closer together
• Each slit is made wider

A red light has a wavelength of 650nm.
It is shone through a double slit spacing 0.2mm onto a screen 2m away.
The fringe spacing is?

• 6.5 x 10 ^-6 m
• 1.6 x 10^-3 m
• 6.5 x 10^-3 m
• 1.6 x 10^-6 m

Tags

NGSS.HS-PS4-1

Extra distance travelled by one of waves compared with other is called

• path.

• displacement.

• phase difference.

• path difference.

Two light sources are said to be coherent if they

• are of the same frequency.

• are of the same frequency, and maintain a constant phase difference.

• are of the same amplitude, and maintain a constant phase difference.

• are of the same frequency and amplitude.

The top bright fringe order is?

• Fourth order minimum

• Third order minimum

• Fourth order maximum

• Third order maximum