Exploring Atomic Spectra Through Diffraction Grating Demonstrations

The video tutorial demonstrates atomic spectra using a diffraction grating. It covers the continuous spectrum of an incandescent bulb and the discrete spectra of mercury, nitrogen, neon, and hydrogen. The hydrogen spectrum is highlighted for its importance in labs and astronomy. The tutorial explains how a diffraction grating works and shows the spectral lines of each element, emphasizing the Balmer series in hydrogen.

What is the purpose of using a diffraction grating in observing atomic spectra?

• To increase the brightness of the light source

• To focus the light into a single beam

• To magnify the image of the light source

• To separate light into its component wavelengths

What type of spectrum does an incandescent bulb produce?

• Absorption spectrum

• Emission spectrum

• Continuous spectrum

• Discrete spectrum

What color lines are predominantly seen in the mercury spectrum with a diffraction grating?

• Orange and violet

• Turquoise and pink

• Red and yellow

• Green and blue

What is used to energize the mercury discharge tube to emit spectral lines?

• A magnetic field

• A heat source

• A laser beam

• A voltage

Which colors are visible in the nitrogen spectrum with a diffraction grating?

• Red, green, and blue

• Blue, indigo, and violet

• Yellow, orange, and pink

• Red, orange, yellow, green, and violet

What is the primary color seen in the neon spectrum?

• Orange

• Blue

• Green

• Purple

What is the significance of the hydrogen alpha line in astronomy?

• It helps in determining the age of galaxies

• It is a prominent line in many nebulae

• It is used to identify black holes

• It is used to measure the temperature of stars

Which series do the hydrogen beta and gamma lines belong to?

• Paschen series

• Balmer series

• Lyman series

• Brackett series

What is the final energy level for the electron transitions in the Balmer series?

• First energy level

• Second energy level

• Third energy level

• Fourth energy level

What is the color of the hydrogen gamma line?

• Red

• Yellow

• Green

• Violet