How much time does the earth take to move 1° longitude?
(A) 24 hours
(B) one hour
(C) 4 minutes
(D) 4 hours
1 Answers
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Two places A and B on the same longitude are h km apart along the surface of the earth, A is at the equator. The shadow of a vertical pole is zero at
Correct Answer - `R=(h)/(tan^(1)(1)/(2))`
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How much times does the second hand of a clock take to complete an angle equal to 270°?
Correct option is: (B) 45 seconds
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Light travels a certain distance in water in `3 mu` s . How much time it would take for light for travel the same distance in air ? Refractive index o
Correct Answer - `2.2 mu` s
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…….. longitude is Standard Meridian of India.
82°30’E longitude is Standard Meridian of India.
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0° longitude is known as
(A) Prime Meridian
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The longitude taken as Indian Standard Time is:
(B) 82\(\frac{1}{2}\)° E
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A man standing on a moving escalator, completes a certain distance in time `t_(1)`. If the escalator does not move then man covers this distance in ti
Correct Answer - (i)`(t_(1)t_(2))/(t_(1)+t_(2))`, (ii)`(t_(1)t_(2))/(|t_(1)-t_(2)|)`
2 Answers 3 views
If R is the radius of the Earth and g is the acceleration due to gravity on the Earth’s surface, the mean density of the Earth is
Correct option is: (D) \(\frac{3g}{4\pi RG}\)
2 Answers 1 views
A body weighs 200 N on the surface of the Earth. How much will it weigh half way down to the centre of the Earth?
(B) 100 N Acceleration due to gravity at depth d, gd = g (1 – \(\frac{d}{R}\)) = g(1 – \(\frac{1}{2}\)) …(∵ d = \(\frac{1}{2}\)) ∴ gd = \(\frac{g}{2}\) Weight of the body at depth d = R/2, Wd = mgd = m × g/2 = \(\frac{1}{2}\) ×...
2 Answers 1 views
Carbon burried under the ocean floor might take this much of time to return to the atmosphere
D) 10 Million
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