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8 months ago

Humanities & Social Sciences B.A

How to choose the best colleges offering BA courses?

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Rashmi Srivastava

Contributor-Level 9

Students interested in pursuing BA courses need to shortlist colleges on various factors like entrance exams accepted, specialisation, fees, scope, placements and pay packages. The table below includes the name of colleges on the basis of the exams they accept. It will give an idea to the aspirants and help them in making their choice.

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8 months ago

Projectile Motion Physics Motion in Plane

A ball of mass m is thrown vertically upwards. Another ball of mass 2 is thrown at an angle q with vertical. Both the balls stay in air for the same period of time. The ratio of the heights attained by the two balls respectively is $\frac{1}{x} .$ The value of x is _______.

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Payal Gupta

Contributor-Level 10

$T_{1} = \frac{2 u}{g} T_{2} = \frac{2 V s i n θ}{g}$

$A s, T_{1} = T_{2} \Rightarrow \frac{2 u}{g} = \frac{2 V s i n θ}{g} \Rightarrow u = v s i n θ$ - (i)

$\frac{H_{1}}{H_{2}} = \frac{u^{2}}{2 g} \times \frac{2 g}{v^{2} s i n^{2} θ} = {(\frac{u}{v s i n θ})}^{2} = 1$

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8 months ago

Torque and Angular Momentum Physics System of Particles and Rotational Motion

A pulley of radius 1.5m is rotated about its axis by a force F = (12t – 3t²)N applied tangentially (while t is measured in seconds). If moment of inertia of the pulley about its axis of rotation is 4.5 kg m², the number of rotation made by the pulley before its direction of motion is reversed, will be $\frac{K}{π} .$ The value of K is ________.

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Payal Gupta

Contributor-Level 10

r = 1.5 m

F = 12t – 3t2 N

l = 4.5 kgm²

$α = \frac{T}{l} = \frac{\frac{2}{3} (12 t - 3 t^{2})}{4.5} = \frac{1}{3} (12 t - 3 t^{2})$

$\Rightarrow α = 4 t - t^{2}$

$\Rightarrow \frac{d w}{d t} = u t - t^{2} = \int_{0}^{0} d w = \int {(4 t - t^{2})}_{0}^{t} d t$

No. of rev = $\frac{36}{2 π} = \frac{18}{π} = \frac{k}{π} \Rightarrow k = 18$

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8 months ago

Physics Mechanical Properties of Solids Physics

A square aluminium (shear modulus is 25 × 10⁹ Nm^-2) slab of side 60 cm and thickness 15 cm is subjected to a shearing force (on its narrow face) of 18.0 × 10⁴ N. The lower edge is riveted to the floor. The displacement of the upper edge is ________ $μ m .$

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Payal Gupta

Contributor-Level 10

Shear modulus = 25 × 109 N/m2

$\frac{F}{A} = τ \frac{Δ x}{h} \Rightarrow Δ x = \frac{F h}{A τ} = \frac{18 \times 1 0^{4} \times 0.15}{3600 \times 1 0^{- 4} \times 25 \times 1 0^{9}}$

$= \frac{15 \times 1 0^{2}}{200 \times 25 \times 1 0^{5}}$

$= \frac{3 \times 1 0^{2}}{5 \times 200} \times 1 0^{- 5}$

$= \frac{60}{200} \times 1 0^{- 5} = 3 μ m$

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8 months ago

Physics Oscillations Physics

A mass 0.9kg, attached to a horizontal spring, executes SMH with an amplitude A₁. When this mass passes through its mean position, then a smaller mass of 124 g is placed over it both masses move together with amplitude A₂. If the ratio $\frac{A_{1}}{A_{2}} i s \frac{α}{α - 1},$ then the value of a will be______.

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Payal Gupta

Contributor-Level 10

$m_{1} = 900 g m, w_{1} = \sqrt[]{\frac{k}{. 9}}$

$m_{2} = 1024 g m, ω_{2} = \sqrt[]{\frac{k}{1.024}}$

$m_{1} v_{1} = m_{2} V_{2}$

$\Rightarrow m_{1} ω_{1} A_{1} = m_{2} ω_{2} A_{2}$

$\Rightarrow \frac{A_{1}}{A_{2}} = \sqrt[]{\frac{1024}{900}} = \frac{32}{30} = \frac{16}{15} = \frac{16}{16 - 1}$

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8 months ago

Electric Charge and Field Physics Electric Charge and Field

A long cylindrical volume contains a uniformly distributed charge of density $ρ C m^{- 3} .$ The electric field inside the cylindrical volume at a distance $x = \frac{2 ε_{0}}{ρ} m$ from its axis is_________Vm^-1.

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Payal Gupta

Contributor-Level 10

$x = \frac{2 ε_{0}}{ρ}$

$E 2 π x l = \frac{ρ π x^{2} l}{ε_{0}}$

$E_{x} = \frac{ρ x^{2}}{2 x ε_{0}} = \frac{ρ x}{2 ε_{0}}$

$= \frac{ρ}{2 ε_{0}} \times \frac{2 ε_{0}}{ρ} = 1 v / m$

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8 months ago

Overview Physics Current Electricity

A 1 m long copper wire carries a current of 1 A. If the cross section of the wire is 2.0mm² and the resistivity of copper is 1.7 × 10^-8 $Ω m,$ the force experienced by moving electron in the wire is _______× 10^-23N.

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Payal Gupta

Contributor-Level 10

i = 1 A $j = σ E$

A = 2mm²

$ρ = 1.7 \times 1 0^{- 8} Ω m$ $F = e E = \frac{e j}{σ} = \frac{e i}{A σ} = \frac{e i ρ}{A}$

= $\frac{1.6 \times 1 0^{- 19} \times 1.7 \times 1 0^{- 8}}{2 \times 1 0^{- 6}}$

= 136 × 10^-23 N

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8 months ago

Physics Class 12th

To light, a 50 W, 100 V lamp is connected, in series with a capacitor of a capacitance $\frac{50}{π \sqrt[]{x}} μ F,$ with 200V, 50Hz AC source. The value of x will be________.

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Payal Gupta

Contributor-Level 10

$R = \frac{v_{2}}{P} = \frac{10000}{50} \Rightarrow R = 200 Ω$

$V = \sqrt[]{V_{C}^{2} + V_{R}^{2}}$

$\Rightarrow 200 = \sqrt[]{V_{C}^{2} + {(100)}^{2}}$

$x_{c} = \frac{1}{ω_{c}} = \frac{π \sqrt[]{x}}{100 π \times 50} = \frac{\sqrt[]{x}}{5000 \times 1 0^{- 6}} = \frac{\sqrt[]{x} \times 1 0^{3}}{5}$

$= 200 \sqrt[]{x}$

$V_{C} = i x_{C}$

$\Rightarrow \sqrt[]{3} . \sqrt[]{1 + x} = 2 \sqrt[]{x}$

$\Rightarrow 3 (1 + x) = 4 x \Rightarrow x = 3$

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8 months ago

Physics Wave Optics Physics

Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the two beams are p/2 and p/3 at points A and B respectively. The difference between the resultant intensities at the two points is xI. The value of x will be________.

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Payal Gupta

Contributor-Level 10

$?_{A} = \frac{π}{2}, ?_{B} = \frac{π}{3}$

$I_{A} = I_{1} + I_{2} + 2 \sqrt[]{l_{1} l_{2}} c o s ? = l + 4 l + 2 \sqrt[]{l \times 4 l} c o s \frac{π}{2} = 5 l$

$I_{B} = I + 4 I + 2 \sqrt[]{l . 4 l} c o s \frac{π}{3} = 5 l + 2 l = 7 l$

$Δ l = 7 l - 5 l = 2 l \Rightarrow x = 2$

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8 months ago

physics ncert solutions class 11th Units and Measurements

The one division of main scale of Vernier calipers reads 1mm and 10 divisions of Vernier scale is equal to the 9 divisions on main scale, When the two jaws of the instrument touch each other, the zero of the Vernier lies to the right of zero of the main scale and its fourth division coincides with a main scale division. When a spherical bob is tightly placed between the two jaws, the zero of the Vernier scale lies in between 4.1 cm and 4.2cm and 6^th Vernier division coincides with a main scale division. The diameter of the bob will be ________× 10^-2 cm.

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Payal Gupta

Contributor-Level 10

1 msD = 1mm

10 vsD = 9msD

1vsD = 0.9 MsD

L.C. = 1MSD – 1VSD = 1 – 0.9 = 0.1 mm

Zero error = 4LC = 0.4 mm

Reading = MSR + VSR + correction

= 4.1 cm + 6 * .01 cm + (-0.04 cm) = (4.1 + 0.06 – 0.04) cm

= 4.12 cm = 412 * 10^-² cm

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8 months ago

T.D. Medical College, Alappuzha Medicine & Health Sciences

What is the latest cutoff information for Bachelor of Cardio Vascular Technology at T.D. Medical College, Alappuzha?

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8 months ago

Humanities & Social Sciences B.A

Can I pursue BA in Psychology without having psychology subject in 12th?

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Asma

Beginner-Level 2

Yes, of course you can pursue B.A Psychology without having psychology in 12th. Many colleges like DU provide psychology courses.

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8 months ago

Physics Current Electricity Wheatstone Bridge

In a meter bridge experiment, for measuring unknown resistance ‘S’, the null point is obtained at a distance 30cm from the left side as shown at point D. If R is 5.6 $k Ω$ , then the value of unknown resistance ‘S’ will be ___________ $Ω .$

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Payal Gupta

Contributor-Level 10

$\frac{30}{70} = \frac{S}{5.6 k Ω} \Rightarrow S = \frac{3}{7} \times 5.6 k Ω = 3 \times 0.8 k Ω$

= 2.4k $Ω$ = 2400 $Ω$

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8 months ago

Delhi University (DU) Colleges in India

I have 50 marks in CUET. Are seats available in Delhi University for MA in geography?

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Avik Gumasta

Beginner-Level 3

A score of 50 marks in cuet will not help you secure a college seat in Delhi University (DU) it is unlikely to get admission in MA geography in delhi university. As cutoff in institutions like delhi university is high.

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8 months ago

Humanities & Social Sciences Economics

Which Economics courses after graduation can I opt for?

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Gunjan Dhawan

Contributor-Level 9

After graduation, you have two options for further studies: either you can opt for a full-fledged postgraduate degree course for 2 years, or you can go for a PG Diploma or certificate course. A Diploma or certificate will be shorter than a PG programme and will provide you with the same industry relevant skills, but in a specific area of study.

Meanwhile, a PG course will provide an in-depth understanding of the whole subject.

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8 months ago

Humanities & Social Sciences Economics

How can I get admission to an Economics course online?

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Lalit Rastogi

Contributor-Level 9

Hello, getting admission to an Economics course online is more simpler and you won't even need to prepare for any entrance exams, because most online courses are offered a merit basis.

You just need to apply online, upload your documents, wait for the college to verify your application, if you get shortlisted, the college with send you a confirmation email.

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Economics Course Admission

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8 months ago

SAM Global University SAM Global University Admission Process

How to get into Sam University Bhopal for BPharma?

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