Find A: C, if A:B = 7:8 and B:C = 16:21

 Solution:-

A:B = 7:8   is written as   A/B = 7/8

B:C = 16:21 is written as  B/C = 16/21

We have to find A:C = ? 

A:C is written as  A/C

A/C = A/B × B/C

A/C = 7/8 × 16/21

A/C = 2/3

A:C = 2:3

Ans:- A:C = 2:3

Add the following terms -2mm, 4 mn, - 6 mn

=  mn - 2mm + 4mn - 6mn

=  -2mm + mn (1 + 4 - 6)

=  -2mm + mn (-1)

=  -2mm - mn

Ans:-  -2mm - mn

The product of the place value of 5 and 6 in 70560

Option:

1) 30

2) 300

3) 3000

4) 30000

Ans:- 4) 30000

Explanation:- Place value of 5 = 500

         

                      Place value of 6 = 60

                      Product of Place value = 500 × 60

                                                   

                                                        Ans   = 30000

Write true or false. Correct and rewrite the statement if false

 Write true or false. Correct and rewrite the statement if false: 

a) Oxygen produced during photosynthesis comes from Carbon dioxide:- True

b) Connective tissue provides insulation to the animal body:- True

c) Adding iodine solution to the leaf removes chlorophyll from it:- True

d) In a dicot leaf, both upper and lower epidermis contains stomata:- False

Statement:- Becausce in dicot leaf the stomata are found only on the underside of the leaf

e) Spongy mesophyll cells perform the maximum amount of photosynthesis:- False 

Statement:- Becausce spongy mesophyll cells do not contain as many chloroplasts as those found in palisade cells.

Find out the mis –match in the following

 A) Nemathelminthes – Pesudocoel

B) Arthropoda –Haemocoel

C) Chordata – Enterocoel

D) Platyhelminthes – True coelom

Ans: C) Chordata – Enterocoel

Did animals emit radio waves just like humans emit infrared ?

 Of course yes ! As we like emit infrared radiation same as animal also emit.

Why animal also emit radiation like human ?

first of all we try to know that what is the difference between animal and human.!

i)  Human is intelligent than animals.

ii) Animals are so stronger than human.

But both have physical body like 1) Bones

                                                     2) Blood

                                                     3) Cell

                                                     4) Skin

                                                     5) Brain...etc

So thats why animals also emits radio waves just like humans emit infrared radiation.

What media should be used instead of radio waves for constant video conferencing facility?

 Yes ! It is possible instead of radio waves, constant video conferencing facility is possible.

with the help of FOC (Fiber Optic Cable).

Today, fiber optic technology widely used to transmit high quality videos. Fiber optic cables are made up of thin optical fiber strands.

Fiber transmit data from one location to another location in form of light waves.

Optical fiber uses light signal for transmitting data.

Light wave is transmitted through the optical fiber by a principle called total internal reflection.

Which FM Waves are available in pimpalner Maharashtra?

 Analog FM waves is available in pimpalner maharashtra.

FROM 29 STATIONS ON PAN INDIA BASIS where Air Broadcasting in Digital standard –i) AHMEDABAD,

 AJMER,

 BARMER,

 BENGALURU,

 BIKANER, 

CHENNAI,

 DELHI,

 DHARWAD, 

DIBRUGARH, 

GUWAHATI,

 ITANAGAR, 

JABALPUR, 

JALLANDHAR, 

JAMMU, 

KOLKATA, 

LUCKNOW,

MUMBAI, 

PANAJI, 

PASSIGHAT,

 PATNA, 

PUNE, 

RAJKOT, 

RANCHI,

 SILIGURI, 

SURATGARH, 

TWANG, 

VARANSI, 

VIJAYVADA AND TIRUCHIRAPALLI.

20 watt LED tube light AC or DC

 It is AC LED tube light bulb.

Because in AC LED tube light, there is small circuit is fitted inside LED tube light. 

As we know that all bulb and tube light is glow, when it gets directs current its means DC current or DC voltage.

But in our 230V AC (Alternate Current) is supplied from power house.

So therefore when AC current or voltage come in LED or tube light its rectifies into DC current or voltage with the help of rectifier circuit which present in the LED.

   So simply when AC is input Rectifier circuits presents inside LED bulb which convert AC to DC.