Explore topic-wise InterviewSolutions in .

Army tanks are provided with caterpillar tracks.what is the reason for this???

Calculate the time period of tuning fork having frequency 25 Hz.

24.An inductor and a capacitor are joined in series to an ac source. The frequency of AC is gradually increased then current in the circuit is 1. Increases continuously 2. Decreases continuously 3. First increases then decreases 4. First decreases then increases

Name the object (or part) which vibrates to produce sound in the following musical instruments: (a) Sitar (b) Dholak (c) Flute (d) Cymbals (e) Veena (f) Tabla

Explain why we always see the same side of the moon.

A particle A of charge q placed near a uniformly charged infinite plane sheet with surface charge density experiences a force f1. When this particle is placed near an infinite metal plate with surface charge density, it experiences a force f2. Then

A string of length l is fixed at both ends.It is vibrating in it third overtone with maximum amplitude 'a'.The amplitude at a dis†an ce l/16 from one end is.

64. Find the roots of following equation by completing the square method. Root 2xsquare + 7x + 5root2 = 0

Describe with the help of a diagram an instrument which can be used to detect a charged body. [5 MARKS]

At 27^°C , the osmotic pressure of a non- volatile , non-electrolyte solute is 47.7 mm hg.The soln is dil and heated upto 127^°C,when the osm pressured comes 19 mm Hg.Then Molality of soln becomes? Extent of dilution is?

An object starts from rest and moves with uniform acceleration. The displacement of the object is proportional to ___ of time.

What effect do the two kinds of charges have on each other?

40 millitre of CO was mixed with 100 ml of O2 and the mixture was exploded . On cooling the rection mixture was shaken with KOH . What volume of g

Where are the poles of a disc magnet located?

A cubical block of mass M and side a is placed on a rough horizontal plane . A force F is acting on the block at height 3a/4 from the bottom. The minimum value of coefficient of friction(μ) such that block topples without sliding will be-1) 2/3, 2)1/2, 3)3/4, 4)1/3

A gas can be taken from A to B via two different processes, ACB and ADB. When path ACB is used, 60 J of heat flows into the system and 30 J of work is done by the system. If path ADB is used, work done by the system is 10 J. The heat flow into the system in path ADB is:

17.A helicopter moving vertically upwards, releases a packet when it is at a certain height above the ground. The packet initially moves upwards for a time t1 and then falls downward for a time t2 until it reaches the ground. Then 1.t1 t2 4. Data insufficient

How does the force of attraction between twoobjects change, when the distance between themis reduced to quarter?

The approximate depth of an ocean is 2700 m. The compressibility of water is 45.4 x 10-11 Pa-1 and density of water is 103 kg/m3. What fractional compression of water will be obtained at the bottom of the ocean?

A particle is dropped from the top of tower . During its motion it covers 9/25 Part of height of tower in the last 1sec .find height of tower

A lead bullet of mass 2 Kg, traveling with a velocity of 20 m/s, comes to rest after penetrating 20m in a still target. Find the resistive force applied by the target and acceleration of the bullet.

When the chalk is converted to powdered chalk, what type of change occurs?

Point having maximum electric field intensity due to the charge carrying ring?

The least distance of distinct vision for a young adult with normal vision is about: (a) 25 m (b) 2.5 cm (c) 25 cm (d) 2.5 m

41.AN ELECTRIC APPLIANCE IS RATED 200W,250V.THIS APPLIANCE IS CONNECTED TO 250V MAINS. CALCULATE (A) current drawn (B) electrical energy consumed in 60 hrs (C) if cost of electricity is 2 per commercial unit .find the cost of electricity in above part

Which of the following are not electromagnetic waves?

A piece of wood of mass 150 g has a volume of 200cm^3. Find the density of wood in : (a) C.G.S unit. (b) S.I. unit.

Explain the following : A.Why are the tyres of vehicles treaded? B. Why do we use spiked shoes while playing sports? [ 3 MARKS ]

The the ratio velocity of two object A and B is 1 ratio 3 if the position time graph a graph of object is inclined to time Axis at 30^° and the position time graph of object be is inclined to time Axis at

A(4)a V2h29 A light cylindrical vessel is kept on a horizontalsurface. Its base area is A. A hole of crossAis made on side wall just at itssectional areabottom. Minimum coefficient of friction such that itdoes not slide due to impact force of emergingliquid is1(1) H(2 ) μ = 4(3) H1(4) Hade of1/2

The position-time graph for two particles A and Bmoving along positive x-axis and positive y-axisrespectively are straight lines inclined at angle of 30^° and 60^° respectively with the time axis. The magnitudeof velocity of particle B w.r.t.particle A will be

will Sn1 reaction always leads to racemisation?

How does the density of a liquid (or gas) vary with temperature?

Why should we call density as density?Why not mass as density and density as mass???

What are the different types of thermometers?

THE FRICTION COEFFICIENT BETWEEN TWO BLOCKS AS SHOWN IN THE FIGURE IS (MU) AND THE HORIZONTAL PLANE IS SMOOTH IF BLOCKS ARE SLIGHTLY DISPLACED BY DISTANCE x FROM THE MEAN POSITION AND THEN RELEASED MAXIMUM AND MINIMUM(IF EXIST) FRICTION FORCE ACTING BETWEEN THEM IN FURTHER MOTION

graivitational force isa weakest force and its range is long but nuclear force is astrongest force but its range is short why?

The electrical discharge from clouds to building or a tree is called

A fly starts from rest attains a velocity of 200 m/s in 5 second . Then the acceleration of the fly in this time ( in metre per second square)is _______

The phenomenon of multiple reflections is the working principle of which object?

An iron tyre is to be fitted onto a wooden wheel 1 m in diameter. The diameter of tyre is 6 mm smaller than that of the wheel. The tyre should be heated so that its temperature (in∘ C) increases by a minimum of (Given : coefficient of volume expansion of iron is 3.6×10−5/∘ C)

Why is the sound of school bell heard over a long distance while that of a blow by hand on a wooden desk remains limited to the room?

About reverberator furnace

A bullet comes out of the barrel of gun of length 2 m with a speed 20 ms-1. The average acceleration of the bullet is?

A bullet comes out of the barrel of gun of length 2 m with a speed 20 ms-1. The average acceleration of the bullet is?

which metal is used in eletorode jj thomson mod

What is friction

19.What is the reason for the rainbow colors in the sky

Which of the following statements are correct for a round trip along the circular route?

A bullet comes out of the barrel of gun of length 2 m with a speed 20 ms^-1. The average acceleration of the bullet is?