Which of the following are the affects of 'Solar Storms' on earth?
1. Generation of the
Northern Lights.
2. It can affect
compass readings.
3. It can affect
airlines.
Select the correct
answer using the codes given below.
a) 1 and 3 only
b) 2 and 3 only
c) 1 and 2 only
d) 1, 2 and 3
Correct
Answer: D
Explanation
What is a solar
Storm?
It is an eruption of
mass and energy from the solar surface mainly in the form of magnetic
plasma and hot gases
of electrically charged particles; and in addition, more dangerous gamma,
ultraviolet and X
rays, out into space.
Solar Flaries, Cronal
Mass ejection, and sunspot activities are the indicators of solar storm.
Solar storms can
happen at any time but tend to become more severe and more frequent in
roughly 11-year
cycles.
How does Solar Storm
affect the Earth?
The collision of
charged particles of solar storm with earth’s magnetospheres generates the
shimmering Northern
Lights, the aurora borealis, and aurora australis in southern hemisphere.
Some charged
particles can modify the Earth's magnetic field and affect compass readings.
The changing magnetic
fields can also induce electricity in long pipelines, or produce electrical
surges in our power
grids leading to brown outs and black outs.
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It can affect the
space programme, trade communications (stockexchange), broadcast
communications,
airlines and navigation.
Consider the following regarding the recently tested 'Ashwin'
missile:
1. It is an
interceptor missile.
2. It travels at
Supersonic speed.
3. It is solid rocket
propelled.
Which of the
statements given above is/are correct?
a) 1, 2 and 3
b) 1 and 3 only
c) 3 only
d) 1 only
Correct
Answer: A
Explanation
*DRDO has come up
with a new indigenously produced Advanced Air Defence (AAD) interceptor
missile, Ashwin.
*The missile was
tested on the newly named Abdul Kalam Island located in the Balashore
district off the
Odisha coast.
*The test involved
the launch of the single-stage Ashvin Advanced Defense interceptor missile
from a mobile
launcher and the successful destruction of an incoming target.
Salient Features
*7.5-metre-long,
single stage solid rocket propelled, guided, supersonic missile.
*It is capable of
destroying any incoming hostile ballistic missile.
TIKDAM: Statement 2:
Supersonic speed means speed greater than sound. And we all know
that even a jet plane
travels with the speed of sound. So, it is a simple fact that missiles travel
with greater speed
than aircrafts. Therefore, we can easily guess, option (a) is correct, which is
the only option with
statement 2.
Which of the following India missile/missiles is/are correctly
matched with their respective description?
PRITHVI: Short range
surface to surface ballistic missile
NAG: Short Range low
level surface to air missile
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TRISHUL: Third
generation anti tank missile
Select the correct
answer using the codes given below.
a) 1 and 2 only
b) 1 only
c) 2 and 3 only
d) 1, 2 and 3
Correct
Answer: B
Explanation
Short range surface
to surface ballistic missile - PRITHVI
Intermediate range
surface to surface ballistic missile - AGNI
Short Range low level
surface to air missile - TRISHUL
Medium range surface
to air missile - AKASH
Third generation anti
tank missile – NAG
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