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Jiptesh answered 2 year(s) , 5 month(s) ago

ADVANTAGES OF FRICTION Friction plays a vital role in our daily life. Without friction we are handicap. 1. It is becomes difficult to walk on a slippery road due to low friction. When we move on ice, it  ...

Jun 4

• 63 Likes
• 206992 Views

Jun 4

Syeda answered 2 year(s) , 9 month(s) ago

What is the difference between convex and concave mirrors and lens ?

MIRRORS
(1) The reflecting surface of the concave mirror is bulged inwards. But the reflecting surface of the convex mirror is bulged outwards.
(2) Concave mirror produces real and inverted imag...

Nov 27

• 29 Likes
• 189580 Views

Nov 27

Syeda answered 2 year(s) , 9 month(s) ago

What is difference between 'g' and 'G'

G stands for Newton's universal gravitational constant, whereas g stands for the acceleration due to gravity at a certain point.
G = 6.67300 × 10-11 N.m2.kg-2, G is a c

...

Sep 20

• 61 Likes
• 159217 Views

Sep 20

Priyanshu answered 2 year(s) , 7 month(s) ago

what is the derivation of mirror formula of concave and convex mirror?

Consider the shown figure where O is a point object and I is corresponding image.
CB is normal to the mirror at B.
By laws of reflection,

For small aperture...

Nov 16

• 29 Likes
• 118047 Views

Nov 16

Syeda answered 2 year(s) , 9 month(s) ago

An electric bulb is rated 220V and 100W. when it is operated on 110V, what will be the power consumed?

P = V 2/R
If V = 220 V we have

100 W = 220 2/R
R = 220 2/100 Ω = 484 Ω. This is the resistance of the bulb.

When V = 110 V,...

Jun 24

• 6 Likes
• 117323 Views

Jun 24

Syeda answered 2 year(s) , 9 month(s) ago

What is difference between speed and velocity?

SPEED                     VELOCITY 1. It is defined as the rate of change of distance. It is defined as the rate of change o...

May 18

• 17 Likes
• 115553 Views

May 18

Syeda answered 2 year(s) , 9 month(s) ago

Difference between luminous and non luminous objects.

Luminous Objects:
Luminous Objects are objects which exhibit light in their own.
Examples: - Sun, flame of a burning candle

Non- Lu...

Sep 20

• 15 Likes
• 105414 Views

Sep 20

Syeda answered 2 year(s) , 9 month(s) ago

Define the following:- (a) Center of curvature (b) Radius of curvature (c) Pole (d) principal axis (e) Principal focus (f) Focal length

(a) Centre of curvature is the centre of the sphere of which the spherical mirror is a part.

(b) Radius of curvature is the linear distance between the pole and the cen

...

Sep 24

• 17 Likes
• 105135 Views

Sep 24

Manoharan commented 4 year(s) , 8 month(s) ago

Derivation of equations of motion

Derivation of The Equations of Motion

Derivation of S = ut + ½ at2

Derivation of v2 - u2<...

Jun 28

• 19 Likes
• 100567 Views

Jun 28

Syeda answered 2 year(s) , 9 month(s) ago

a farmer moves along the boundary of a square field of side 10 m in 40 seconds.what will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position?

Total distance 40m in 40 sec.
Total time taken by the farmer = 2 min 20 sec. =140 seconds.
Total rounds completed= 140/40=3.5 rounds
That mean...

May 21

• 6 Likes
• 95394 Views

May 21

Anand answered 2 year(s) , 2 month(s) ago

What is the difference between a virtual image and a real image?

The following are the main differences between a real image and virtual image.

1.A real image can be caught on a screen whereas a virtual image cannot be caught on a screen.
2. A real i...

Dec 3

• 23 Likes
• 94250 Views

Dec 3

Sai Vijay answered 2 year(s) , 6 month(s) ago

What is the difference between clinical and labratory thermometer?

Clinical thermo meter:  This thermometer is used in Clinics to measure the temperature of human body.
A clinical thermometer has a temperature range of only 35ºC to 42°C.
...

Aug 7

• 28 Likes
• 83221 Views

Aug 7

Nagender commented 2 year(s) , 10 month(s) ago

brief summary of novel the three men in a boat 1st term

SUMMARY OF THREE MEN IN A BOAT -

Three friends named Jerome, George, and Harris smoke together in their apartment in London. They are all hypochondriacs and discuss their illnesses. After researchin

...

Jan 12

• 59 Likes
• 81298 Views

Jan 12

Priyanshu answered 2 year(s) , 3 month(s) ago

what is the uses of convex lens in daily life

Uses of convex lens are:
1) Convex lens is used in microscopes and magnifying glasses to subject all the light to a specific point.
2) Convex lens is used as a camera lens in cameras as they foc...

Jan 19

• 10 Likes
• 78070 Views

Jan 19

Syeda answered 2 year(s) , 9 month(s) ago

Find the dimensions of constant a and b occurig in van der Waal's equation . [p+a/vsq.][v-b]=RT

(P + a/V 2) (V - b) = RT
P is pressure, V is volume and T is temperature.
[P] = [F/A]  = [MLT −2/L 2] = [ML −1T −2]
[V] = [L...

Jul 12

• 13 Likes
• 74988 Views

Jul 12

Syeda answered 2 year(s) , 9 month(s) ago

Examples of periodic and non-periodic motions

thanks

Nov 6

• 15 Likes
• 72557 Views

Nov 6

Syeda answered 2 year(s) , 9 month(s) ago

What is the difference between resistance and resistivity of a conducter? Please Explain?

May 7

• 4 Likes
• 70722 Views

May 7

Syeda answered 2 year(s) , 9 month(s) ago

Derive the expression kinetic energy, potential energy

Derivation for the equation of Potenstial Energy:
Let the work done on the object against gravity = W
Work done, W = force × displacement...

Dec 24

• 7 Likes
• 70542 Views

Dec 24

Amandeep answered 2 year(s) , 1 month(s) ago

What are the applications of Archimedes principle?

Applications of Archimedes principle:-
1. Archimedes principle is used to determining the relative density of the substance.
2. Archimedes principle is used in designing ships and submarines.

Feb 1

• 9 Likes
• 69926 Views

Feb 1

Priyanshu answered 2 year(s) , 9 month(s) ago

I want all the formulas used in chapter electricity

The formulas used in class X are-
1- I,current=Q,charge/T,time
2- V,potential differnce=W,work done/Q,charge
3-V,potential difference=I,current*R,resistance
4-Resisitivity=(R,res...

Jul 9

• 4 Likes
• 62748 Views

Jul 9

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