The energy received by the surface during time span of 1 minute is : Light with an average flux of 20 W/cm 2 falls on a non-reflecting surface at normal incidence having surface area 20 cm 2.
For which one of the following, Bohr model is not valid ?ħ. The magnetic field at the centre of the solenoid is :Ħ. A long solenoid of 50 cm length having 100 turns carries a current of 2.5 A. If instead C is removed from the circuit, the phase difference is again between current and voltage. When L is removed from the circuit, the phase difference between current and voltage is. A series LCR circuit is connected to an ac voltage source. Select the correct option from the following:ġ. Match the organism with its use in biotechnology. Match the following columns and select the correct option.ġ0. (4) Heart wood does not conduct water but gives mechanical supportĩ. (3) Due to deposition of tannins, resins, oils etc., heart wood is dark in colour (2) Sapwood is the innermost secondary xylem and is lighter in colour (1) Sapwood is involved in conduction of water and minerals from root to leaf Experimental verification of the chromosomal theory of inheritance was done by Match the following columns and select the correct option.ħ. The QRS complex in a standard ECG representsĦ. Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?ĥ. Match the following columns and select the correct option.Īdult with radial symmetry and larva with bilateral symmetryĤ.
Bilaterally symmetrical and acoelomate animals are exemplified byģ. If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 10 9 bp, then the length of the DNA is approximatelyĢ.
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