5 public questions tagged with this topic.
τ = r×F = |i^j^k^−210730| = k^((−2)×3−1×7) = k^(−6−7) = −13k^Nm. Magnitude = 13Nm. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 13 Nm. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
X = (3×1)+(7×9)3+7 = 3+6310 = 6.6. Y = (3×4)+(7×2)3+7 = 12+1410 = 2.6. Distance = (6.6)2+(2.6)2 = 43.56+6.76 = 50.32≈7.09m. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 7.09 m. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
X = (8×0)+(2×10)8+2 = 2010 = 2. Y = (8×5)+(2×0)8+2 = 4010 = 4. Distance = (2)2+(4)2 = 4+16 = 20≈4.47m. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 4.47 m. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.
Unfertilized sea urchin egg is surrounded by vitelline membrane, thin extracellular coat containing sperm receptors, overlaid by thick jelly coat. Upon calcium-triggered cortical granule exocytosis, structural proteins and enzymes detach vitelline membrane and harden it via cross-linking by transglutaminase and ovoperoxidase using hydrogen peroxide from respiratory burst. Elevated hardened coat becomes fertilization envelope. Plasma membrane remains beneath, zona pellucida is mammalian equivalent not present in urchins, egg jelly dissolves. Thus fertilization envelope originates directly from modified vitelline membrane repurposed as protective barrier essential for embryonic development.
Ref: Alberts, Molecular Biology of the Cell, Chapter: Fertilization envelope derived from vitelline membrane sea urchin.
Rivers originating from Deccan Plateau are primarily peninsular east-flowing rain-fed systems sourced in Western Ghats escarpment forming western boundary of Deccan. Godavari originates near Trimbakeshwar Nashik, Krishna at Mahabaleshwar, Cauvery at Talakaveri Brahmagiri, all draining basalt plateau into Bay of Bengal forming fertile deltas. These contrast with Himalayan rivers Ganga, Yamuna, Brahmaputra originating from Himalayan glaciers perennial. Deccan rivers ephemeral dependent on monsoon 600-1500 mm rainfall, essential for irrigation agriculture in semi-arid plateau despite seasonal flow variation. Such details are high-yield for NEET and CUET as they link morphological classification with modern molecular phylogeny insights.
Ref: NCERT Drainage System Deccan Rivers Origin Western Ghats; Godavari Basin Map Western Ghats Source
