Describe The Alimentary Canal Of A Cockroach And Its Interaction
The Alimentary canal has been divided into three main parts: Foregut The alimentary canal starts with the foregut which comprises... View Article
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One end of a thermally insulated rod is kept at a temperature T1 and the other at T2. The rod is composed of two sections of lengths l1 and l2 and thermal conductivities k1 and k2 respectively as shown in the figure. The temperature at the interface of the two sections is :
\(\begin{array}{l}\frac{Q_{1}}{t} = \frac{(T_{1} – T)k_{1}}{l_{1}}A\end{array} \) \(\begin{array}{l}\frac{Q_{2}}{t} = \frac{(T – T_{2})k_{2}}{l_{2}}A\end{array} \) \(\begin{array}{l}\frac{Q_{1}}{t} = \frac{Q_{2}}{t}\end{array} \) \(\begin{array}{l}(T_{1} – T)K_{1}l_{2} =... View Article
Magnetic flux linked with a stationary loop resistance R varies with respect to time during the time period T as follows: ϕ = at(T−t) The amount of heat generated in the loop during that time (inductance of the coil is negligible) is ?
Sol: Given: \(\begin{array}{l} \Phi = at (T – t) \end{array} \) The emf is,\(\begin{array}{l} \varepsilon = – \frac{d\Phi}{dt} = -at... View Article
Find The Least Count Of A Milliammeter In Which There Are 20 Divisions Between 500 mA and 600 mA Marks
The least count of a milliammeter \(\begin{array}{l} \Rightarrow \frac{Range}{Number of divisions} \end{array} \) \(\begin{array}{l} \Rightarrow \frac{600-500}{20} \end{array} \) \(\begin{array}{l} \Rightarrow... View Article
The Wavelength Of The First Member Of The Balmer Series In Hydrogen Spectrum Is Λ. Calculate The Wavelength Of The First Member Of Lyman Series In The Same Spectrum.
Given the wavelength of the first member of the Balmer series in Hydrogen, the spectrum is λ. \(\begin{array}{l} Rydberg’s equation... View Article
Light Takes ′T1′ Sec To Travel A Distance ′X′ In A Vacuum And The Same Light Takes ′T2′ Sec To Travel 10Cm In A Medium. The Critical Angle For The Corresponding Medium Will Be:
\(\begin{array}{l}c = \frac{x}{t_{1}}, v = \frac{10}{t_{2}} \end{array} \) \(\begin{array}{l}sin i_{c} = \frac{1}{\mu} = \frac{v}{c} = \frac{10}{t_{2}} * \frac{t_{1}}{x} \end{array} \)... View Article
Which One Is An Antitranspirant Hormone?(A) Auxin.(B) Cytokinin.(C) Gibberellin.(D) Abscisic Acid.
The correct answer is (D) Abscisic Acid. Explore more such questions and answers at BYJU’S.
If Sin X + Sin2X + Sin3X = 1 Then Cos6X – 4Cos4X + 8Cos2X Is Equal To
\(\begin{array}{l}sin x + sin^{2} x + sin^{3} x = 1 \end{array} \) \(\begin{array}{l}sin x (1 + sin^{2} x) = 1... View Article
Gold Crystallises In Ccp Structure. The Total Number Of Voids Present In 197 G Of Gold Will Be________.
Weight of gold = 197g The molecular mass of gold = 197 g The number of atoms present in gold... View Article
How Many Types Of Zygotic Combinations Are Possible Between A Cross Aabbccdd×aabbccdd?
The number of gamete possible in a parent is\(\begin{array}{l} 2^{n} \end{array} \)(where n- number of a heterozygous allele in parent... View Article
_______Is The Process Of Finding Errors In Software Code
The answer is Debugging Debugging is the process of finding errors in software code. Explore more such questions and answers... View Article
A swiss watch is being shown in a museum which has a very peculiar property. It gains as much in the day as it loses during the night between 8 pm to 8 am. In a week how many times will the clock show the correct time?
Sol: Let us assume the watch loses x minutes between 8 pm to 8 am. So, in the day it... View Article
Elements In The Same Group Have Equal Valency Comment On It
Elements In The Same Group Have Equal Valency. This is because these elements comprise the same number of electrons in... View Article
ABCD Is A Parallelogram. Show That 2DC – DB = AC
Let AB = a = DC BC = b = AD AC and DB be the diagonals {a,b are vectors}... View Article
Commercial 11.2 Volume Of H2O2 Solution Has A Molarity Of______
The expression for the molarity is \(\begin{array}{l}\frac{x volume}{11.2}\end{array} \) \(\begin{array}{l}\Rightarrow \frac{11.2}{11.2}\end{array} \) \(\begin{array}{l}\Rightarrow 1\end{array} \) Therefore, the commercial 11.2 volume... View Article
A Vertical Stick 20 M Long Casts A Shadow 10 M Long On The Ground, At The Same Time A Tower Casts A Shadow 50 M Long On The Ground, The Height Of The Tower Is ?(A) 25m (B) 100m (C) 120m (D) 200m
The correct answer is (B) 100m In \(\begin{array}{l} \Delta ABC and \Delta ADE \end{array} \), \(\begin{array}{l}\angle BCA = \angle DEA... View Article
In an elementary reaction, A + 2B → 2C +D. If the concentration of A is increased four times and B is decreased to half of its initial concentration, then the rate becomes? (A) Half. (B) Twice (C) Unchanged (D) None of these
The correct answer is (C) Unchanged The given reaction is A + 2B → 2C + O The rate of... View Article
A Sector Of A Circle Of Radius 12 Cm Has An Angle 120 . By Coinciding Its Straight Edges A Cone Is Formed. Find The Volume Of Cone.
Given the radius of the circle 12cm This becomes the slant height of the cone The angle of sector \(\begin{array}{l}120^{\circ}... View Article
Tangents Are Drawn From (4,4) To The Circle X2 + Y2 – 2x – 2y – 7 = 0 To Meet The Circle At A And B. What Is The Length Of The Chord Ab
\(\begin{array}{l} r = \sqrt{(1)^{2} + (1)^{2} – (-4)} = \sqrt{4} = 3 \end{array} \), \(\begin{array}{l} CD = \sqrt{(4-1)^{2} + (4-1)^{2}}... View Article
When A Person Throws A Meter Stick It Is Found That The Centre Of The Stick Is Moving With A Speed Of 10 M/S Vertically Upwards & Left End Of Stick With A Speed Of 20 M/S Vertically Upwards. Then The Angular Speed Of The Stick Is:
Let the distance between the endpoint and centre of the stick be r \(\begin{array}{l} r = \frac{1}{2} = \frac{1}{2}m \end{array}... View Article
