UPSC Prelims Full Length Test - 41

Consider the following statements regarding chlorophyll:

1. It helps in converting light energy to chemical energy in plants.
2. It absorbs green light in the region of visible spectrum.

Which of the above statements is / are correct?

Which of the following organisms obtain their energy primarily through photosynthesis?

1. Cyanobacteria
2. Fungi
3. Sea anemones

Select the correct option from the codes given below:

Consider the following pairs of instruments with what they measure:

1. Bolometer – Electromagnetic radiation
2. Pycnometer – Fluid density
3. Ellipsometer – Refractive index

Which of the above pairs is / are correctly matched?

Consider the following statements:

1. Waves with the shortest wavelengths have the highest frequencies
2. Red light has the longest wavelength, and violet the shortest

Which of the above statements is/are correct?

Consider the following statements regarding Bluetooth and Near Field Communication (NFC) technologies:

1. Bluetooth has a higher effective range in comparison to NFC.
2. NFC technology consumes less power as compared to standard Bluetooth technology.

Which of the above statements is/are correct?