Explore topic-wise InterviewSolutions in Current Affairs.

Out put characteristics of n - p - n transistor in CE configuration is shown. From the characteristics curve determine the current gainatV_("CE") = 1 V.

(a) A 900 pF capacitor is charged by 100 V battery [Fig. 2.31(a)]. How much electrostatic energy is stored by the capacitor? (b) The capacitor is disconnected from the battery and connected to another 900 pF capacitor [Fig. 2.31(b)]. What is the electrostatic energy stored by the system?

Waves of same amplitude and same frequency from two coherent source overlap at a point. The ratio of the resultant intensity when they arrive in phase to that when they arrive with 90^(@) phase difference is

वह स्थान जहाँ बीजाण्ड , बीजाण्डवृन्त से जुड़ता है कहलाता है :

In the circuit shown in the fig the equivalent resistance between a and b is R_(ab) and the equivalent between a and c is R_(ac). find the ratio R_(ab) : R_(ac).

If M,m_n and m_p are masses (in kg) of nucleus X_z^A, neutron and proton respectively, then mass defect(Deltam) is equal to

Nehru often known as

Let there be a spherically symmetric charge distribution with charge density varying as rho (r) = rho_0((5)/(4) - (r)/(R) ) upto r = R, and rho (r) = 0 for r >R, where r is the distance from the origin. The electric field at a distance r (r

A block of mass 10 kg is released from top of rough inclined plane as shown in the figure if coefficient of friction between the block and inclined plane is then total work done on the block by all the forces acting on it till it reaches the bottom s = 10 ms

Match the corresponding entries of column 1 with column 2. [Where m is the magnification produced by the mirror. {:("Column 1","Column 2"),((A)m=-2,"(a) Convex mirror"),((B)m=-(1)/(2),"(b) Concave"),((C)m=+2,"(c) Real image"),((D)m=+(1)/(2),"(d) Virtual image"):}

An artificial satellite is moving in a circular orbit around the earth, with a speed which is equal to half the magnitude of the escape velocity from the earth. What is the height of the satellite above the- surface of earth

What does the poet mean by body of "clay"?

कौन से राज्य के पास गांव में लोगों ने 1200 हेक्टेयर वन भूमिभैरोंदेव डाकव अभ्यारण्य को घोषित कर दी हैं?

Define normal shift. Obtain an expression for normal shift when an object in a denser medium is viewed from a rarer medium.

Long sightedness or ______can be cured by use of convex lens.

A device which can operate in the reverse breakdown voltage region continuously without being damaged is called_____.

Is the expression n=(sin((A+D)/(2)))/(sin(A//2)) true for all the positions of the prism?

A nuclear transformation is denoted by X(n,alpha), ""_(3)^(7)Li. Which of the following is X nucleus ?

A bar with a crack at its centre buckles as a result of temperature rise of 32^(@)C. If the fixed distacne L_(0) is 3.77 m and the coefficient of linear expansion of the bar is 25xx10^(6)//""^(@)C find the rise (in metre) of the centre.

The figure shows a diagonal symetric arrangement of capacitors and a battery.The value of charge q_(1),q_(2) and q_(3)as shown in the figure are

Two short bar mangets of length 1 cm each have magnetic moments 1.20and 1.00 am^(2)respectivelythey have a commonmagnetic value of the resultant horizontal magnetic induction at the mid point O of the line joining their centreis closeto

A wire carrying a current i is first bent in the form of a square of side a and placed at right angle to a uniform magnetic field of induction B. The work done in changing its shape into a circle is

No net force acts on a rectangular loop carrying a steady current when suspended freely in a uniform magnetic field. Is the statement correct or wrong? Justify your an swer.

How does Dalton's hypothesis explain the Gay-Lussac's law?

For writer it was hard to believe that his grandmother was young and pretty?

An alpha- particle and a proton of the same kinetic energy are in turn allowed to pass through a magnetic field vecB, acting normal to the direction of motion of the particles. Calculate the ratio of radii of the circular paths described by them.

A polarized light of intensity I_(0) is passed through another polarizer whose pass axis makes an angle of 60^(@) with the pass axis of the former.What is the intensity of emergent polarized light from second polarizer ?

A plane with a wing span of 18 m flies horizontally at a speed of 800 km/h. The vertical component of the Earth's magnetic field strength is about 40 A/m. Find the voltage across the tips of the wings. Will a light bulb connected to the wing tips glow?

Calculate the volume at 273K, 1 atm occupied by 1.5 moles of carbon dioxide

Across a metallic conductor of non-uniform cross section a constant potential difference is applied. The quantity which remains constant along the conductor is :

A. The wavelength of microwaves is greater than that﻿ of UV-rays.﻿ B. The wavelength of IR rays is lesser than that of UV-﻿ rays.﻿ C. The wavelength of microwaves is lesser than that﻿ of IR rays. D. Gamma rays has shortest wavelength in the electromagnetic spectrum.

A concave mirror and a concave lens are held in water. The focal length of both mirror as well as lens gets changed.

State ohem's law mathematically .

Explain transducer.

For what angle between the two vectors, their resultant is maximum?

Where electromagnetic waves are used ?

Two cells of emfs E_(1) and E_(2) are connected together in two ways shown here. The 'balance points' in a given potentiometer experiment for these two combinations of cells are found to be at 351.0 cm and 70.2 cm respectively. Calculate the ratio of the emfs of the two cells.

Light from two coherent sources of same amplitude and same wavelength illuminates the screen. The intensity of the central maximum is I. If the sources were noncoherent, the intensity at the same point will be

Name the reaction responsible for energy production in the Sun.

The amount of heat radiated pr unit time, per unit area by perfectly black body at 27^@C is (sigma = 5.6 xx 10^(-8) J/m^2 sk^(4))

Draw the energy band diagram of a n-type semiconductor. Deduce an expression for conductivity of a n-type semiconductor.

A. The wavelength of microwaves is greater than that of UV-rays. B. The wavelength of IR rays is lesser than that of UV- rays. C. The wavelength of microwaves is lesser than that of IR rays. D. Gamma rays has shortest wavelength in the electromagnetic spectrum.