Maharashtra State Board
- Characteristics of Fungi. The organisms which are placed in kingdom Fungi are multicellular, heterotrophic, non-green, and eukaryotic in nature. Most of the fungi are... 1
- Explain merits and demerits of Whittaker’s classification. I. Merits of Whittaker’s classification: The classification system that Whittaker has adapted is totally based on scientific foundation. Pro... 1
- Which criteria were considered for classification method of Whittaker? The criteria considered for classification by Whittaker are as follows: 1. Complexity of cell structure: Whether the cells of the organisms... 1
- Three organs of locomotion in Protista Pseudopodia Cilia Flagella 2
- Question 3. Microbes Size 1. Virus (a) 1 μm to 10 μm 2. Algae MicrobesSize 1. Virus(d) 10 nm to 100 nm 2. Algae(c) 10 μm to 100 μm 3. Protozoa(b) 200 μm 4. Bacteria(a) 1 μm to 10 μm Name the following/... 1
- Question 2. Living organism Group 1. Clostridium titani (a) Heterotrophic Protista 2. Paramoecium Living organismGroup 1. Clostridium titani(c) Bacteria belonging to Monera 2. Paramoecium(a) Heterotrophic Protista 3. Chlamydomonas(d) Alga... 1
- Find out my partner ScientistPattern of classification 1. Carl Linnaeus (e) 2 kingdoms of living organisms 2. Haeckel(d) 3 kingdoms – Protista, Plants and Anima... 1
- Which living organisms are included in the kingdom Monera? All the living organisms belonging to Kingdom Monera are unicellular. The mode of nutrition in them is either autotrophic or heterotrophic.... 1
- Explain the nutrition in fungi. Most of the fungi are saprophytic in their nutrition. They absorb the nourishment from dead and decaying matter. By taking the organic matte... 1
- Write the characteristics of viruses. 1. Viruses are extremely minute of the size range of 10 nrn to 100 nm. They are on the borderline of living and non-living. They are 10 to 1... 1
- Use Whittaker method to classify bacteria, protozoa, fungi, algae, prokaryotic, eukaryotic, microbes. Bacteria: Kingdom Monera Protozoa: Kingdom Protista Fungi: Kingdom Fungi Algae: If unicellular, Kingdom Protista. If multicellular, Kingdom... 1
- An electric iron of 600 W is operated for 1 hrs daily. What will be the electrical consumption expenses Sure, here is the complete solution with the given information, calculation steps, and final answer: Given: Power of electric iron = 600 W T... 2
- A 100 µF capacitor is charged with a 50 V source supply. Then source supply is removed and the capacitor Data: C = 100 µF = 100 × 10⁻⁶ F = 10⁻⁴ F, V = 50V, i = 5A The energy stored in the electric field in the capacitor = 1/2 CV² The energy stor... 1
- Compare resistance and reactance. Resistance Reactance It is a property of a material or component that opposes the flow of current through it. It is a property of a material... 1
- What is the natural frequency of L C circuit ? What is the reactance of this circuit at this frequency The natural frequency of LC circuit is 1/2 π √(L C) , where L is the inductance and C is the capacitance. The reactance of this circuit at t... 2
- What is wattless current ? The current that does not lead to energy consumption, hence zero power consumption, is called wattless current. In the case of a purely indu... 1
- For very high frequency AC supply, a capacitor behaves like a pure conductor. Why ? The reactance of a capacitor is XC = 1/2 π f C , where f is the frequency of the AC supply and C is the capacitance of the capacitor. For ve... 1
- The total impedance of a circuit decreases when a capacitor is added in series with L and R. Explain why ? For an LR circuit, the impedance, Z_LR = sqrtR²+X_L² , where X_L is the reactance of the inductor. When a capacitor of capacitance C is adde... 1
- An electric lamp is connected in series with a capacitor and an AC source is glowing with a certain brightness. Answer: The lamp glows more brightly when the capacitance is increased. For the lamp (resistance R) in series with a capacitor C on an AC su... 1
- A toroidal ring, having 100 turns per cm of a thin wire is wound on a nonmagnetic metal rod of length 1 m and diameter Data : l = 1 m, d = 1 cm, n = 100 cm⁻¹ = 10⁴ m⁻¹, I = 100 A, µ₀ = 4π × 10⁻⁷ H/m The radius of cross section, r = d/2 = 0.5 cm = 5 × 10⁻³ m (... 2
- The primary and secondary coil of a transformer each have an inductance of 200 × 10-6H. Data: L_P = L_S = 2 × 10⁻⁴ H, M = 4 × 10⁻⁶ H M = K sqrtL_P L_S The coupling coefficient is K = fracMsqrtL_P L_S=frac4 × 10⁻⁶sqrt(2 × 10⁻⁴)²=... 1
- A long solenoid of length l, cross-sectional area A and having N1 turns (primary coil) has a small coil of N2 We assume the solenoid to be ideal and that all the flux from the solenoid passes through the outer coil C. For a steady current Is through... 1
- An emf of 96.0 mV is induced in the windings of a coil when the current in a nearby coil is increasing Data: |e₂| = 9.6 × 10⁻² V, dI₁/dt = 1.2 A/s |e₂| = M fracd I₁d t Mutual inductance, M = frac|e₂|d I₁ / d t=frac9.6 × 10⁻²1.2 = 8 × 10⁻² H =... 1
- The value of mutual inductance of two coils is 10 mH. If the current in one of the coil changes Data: M = 10 mH = 10⁻² H, I₁i = 5A, I₁f = 1 A, ∆t = 0.2s The mutually induced emf in coil 2 due to the changing current in coil 1, e₂₁ = -M... 1