Q. What is the local time at 150 degrees East when it is 12:00 noon GMT?
A.
6:00 AM
B.
8:00 AM
C.
9:00 AM
D.
10:00 AM
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Solution
150 degrees East is 150/15 = 10 hours ahead of GMT. Therefore, 12:00 noon + 10 hours = 10:00 PM.
Correct Answer:
D
— 10:00 AM
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Q. What is the local time at 15°E when it is 6:00 PM at 0° longitude? (2021)
A.
7:00 PM
B.
6:00 PM
C.
5:00 PM
D.
4:00 PM
Show solution
Solution
The time difference is (15° / 15°) = 1 hour. Therefore, it is 6:00 PM + 1 hour = 7:00 PM.
Correct Answer:
A
— 7:00 PM
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Q. What is the local time at 45°E if it is 12:00 noon at GMT?
A.
3:00 PM
B.
4:00 PM
C.
5:00 PM
D.
6:00 PM
Show solution
Solution
45°E corresponds to 45 / 15 = 3 hours ahead of GMT, so it will be 12:00 noon + 3 hours = 3:00 PM.
Correct Answer:
B
— 4:00 PM
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Q. What is the local time at 45°E longitude when it is 6:00 PM GMT?
A.
9:00 PM
B.
10:00 PM
C.
11:00 PM
D.
12:00 AM
Show solution
Solution
45°E is 45 * 4 = 180 minutes ahead of GMT, which is 3 hours. Therefore, 6:00 PM + 3 hours = 9:00 PM.
Correct Answer:
B
— 10:00 PM
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Q. What is the local time at 75°W when it is 3:00 PM GMT? (2020)
A.
10:00 AM
B.
11:00 AM
C.
12:00 PM
D.
1:00 PM
Show solution
Solution
At 75°W, the time is 75° / 15° = 5 hours behind GMT. Therefore, 3:00 PM GMT - 5 hours = 10:00 AM.
Correct Answer:
A
— 10:00 AM
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Q. What is the local time at 90 degrees East longitude when it is 6:00 AM at the Prime Meridian? (2023)
A.
3:00 AM
B.
9:00 AM
C.
12:00 PM
D.
6:00 PM
Show solution
Solution
90 degrees East is 6 hours ahead of GMT, so 6:00 AM + 6 hours = 12:00 PM.
Correct Answer:
B
— 9:00 AM
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Q. What is the magnetic field around a straight conductor carrying current?
A.
Uniform
B.
Concentric circles
C.
Radial lines
D.
None of the above
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Solution
The magnetic field around a straight conductor carrying current forms concentric circles around the wire.
Correct Answer:
B
— Concentric circles
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Q. What is the magnetic field around a straight current-carrying conductor? (2023)
A.
Uniform
B.
Concentric circles
C.
Radial lines
D.
None of the above
Show solution
Solution
The magnetic field around a straight current-carrying conductor forms concentric circles around the wire, as described by Ampère's circuital law.
Correct Answer:
B
— Concentric circles
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Q. What is the magnetic field strength at the center of a circular loop of radius 0.1 m carrying a current of 3 A?
A.
0.03 T
B.
0.1 T
C.
0.15 T
D.
0.2 T
Show solution
Solution
The magnetic field (B) at the center of a circular loop is given by B = (μ₀ * I) / (2 * R). Using μ₀ = 4π x 10^-7 Tm/A, B = (4π x 10^-7 * 3) / (2 * 0.1) = 0.1 T.
Correct Answer:
B
— 0.1 T
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Q. What is the magnetic field strength at the center of a circular loop of radius 0.1 m carrying a current of 5 A?
A.
0.1 T
B.
0.2 T
C.
0.5 T
D.
1 T
Show solution
Solution
The magnetic field at the center of a circular loop is given by B = (μ₀ * I) / (2 * R). Using μ₀ = 4π x 10^-7 Tm/A, B = (4π x 10^-7 * 5) / (2 * 0.1) = 0.1 T.
Correct Answer:
B
— 0.2 T
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Q. What is the magnetic field strength at the center of a circular loop of radius r carrying a current I?
A.
μ0I/2r
B.
μ0I/r
C.
μ0I/4r
D.
μ0I/πr
Show solution
Solution
The magnetic field at the center of a circular loop is given by B = (μ0I)/(2r).
Correct Answer:
B
— μ0I/r
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Q. What is the magnification produced by a concave lens if the object is placed at a distance of 30 cm and the focal length of the lens is 15 cm? (2022)
A.
-0.5
B.
-1
C.
-2
D.
-3
Show solution
Solution
Using the lens formula and magnification formula, we find the magnification m = -v/u = -1.
Correct Answer:
B
— -1
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Q. What is the magnification produced by a concave mirror if the object is placed at a distance of 15 cm and the focal length is 5 cm?
Show solution
Solution
Using the mirror formula, 1/f = 1/v + 1/u, we find v = -7.5 cm. Magnification (m) = -v/u = 7.5/15 = 0.5.
Correct Answer:
C
— 3
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Q. What is the magnitude of the vector C = 5i - 12j?
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Solution
Magnitude |C| = √(5^2 + (-12)^2) = √(25 + 144) = √169 = 13.
Correct Answer:
A
— 13
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Q. What is the main aim of the Pradhan Mantri Ujjwala Yojana? (2016)
A.
To provide free electricity to rural households
B.
To provide LPG connections to women from Below Poverty Line (BPL) households
C.
To promote solar energy usage
D.
To enhance rural sanitation
Show solution
Solution
The Pradhan Mantri Ujjwala Yojana aims to provide LPG connections to women from Below Poverty Line (BPL) households to promote clean cooking fuel.
Correct Answer:
B
— To provide LPG connections to women from Below Poverty Line (BPL) households
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Q. What is the main cause of ocean currents? (2020)
A.
Wind patterns
B.
Earth's rotation
C.
Temperature differences
D.
All of the above
Show solution
Solution
The main cause of ocean currents is a combination of wind patterns, Earth's rotation, and temperature differences.
Correct Answer:
D
— All of the above
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Q. What is the main characteristic of a black body in terms of radiation? (2019)
A.
Reflects all radiation
B.
Absorbs all radiation
C.
Transmits all radiation
D.
Scatters all radiation
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Solution
A black body absorbs all radiation incident on it, making it an ideal emitter of thermal radiation.
Correct Answer:
B
— Absorbs all radiation
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Q. What is the main component of the Earth's atmosphere? (2022)
A.
Oxygen
B.
Nitrogen
C.
Carbon Dioxide
D.
Argon
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Solution
Nitrogen is the main component of the Earth's atmosphere, making up about 78% of it.
Correct Answer:
B
— Nitrogen
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Q. What is the main component of the Earth's mantle? (2019)
A.
Silicate minerals
B.
Iron
C.
Nickel
D.
Water
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Solution
The Earth's mantle is mainly composed of silicate minerals, which include olivine and pyroxene.
Correct Answer:
A
— Silicate minerals
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Q. What is the main concept of quantum mechanics that distinguishes it from classical mechanics? (2023)
A.
Determinism
B.
Wave-particle duality
C.
Conservation of energy
D.
Newton's laws
Show solution
Solution
Wave-particle duality is a fundamental concept of quantum mechanics, indicating that particles exhibit both wave and particle properties.
Correct Answer:
B
— Wave-particle duality
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Q. What is the main difference between a gas and a plasma?
A.
Density
B.
Temperature
C.
Ionization
D.
Volume
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Solution
Plasma is ionized gas, meaning it has free electrons and ions, while gas does not.
Correct Answer:
C
— Ionization
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Q. What is the main difference between a liquid and a gas?
A.
Shape
B.
Volume
C.
Density
D.
All of the above
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Solution
Liquids have a definite volume and take the shape of their container, while gases have neither a definite shape nor volume.
Correct Answer:
D
— All of the above
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Q. What is the main factor that affects the climate of a region? (2022)
A.
Altitude
B.
Latitude
C.
Longitude
D.
Population
Show solution
Solution
Latitude is the main factor that affects the climate of a region.
Correct Answer:
B
— Latitude
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Q. What is the main factor that determines the climate of a region?
A.
Altitude
B.
Latitude
C.
Longitude
D.
Proximity to water bodies
Show solution
Solution
Latitude is the main factor that determines the climate of a region.
Correct Answer:
B
— Latitude
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Q. What is the main factor that drives ocean currents?
A.
Wind
B.
Salinity
C.
Temperature
D.
Gravity
Show solution
Solution
Wind is the primary factor that drives ocean currents, influencing their direction and speed.
Correct Answer:
A
— Wind
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Q. What is the main factor that influences climate in a region?
A.
Altitude
B.
Latitude
C.
Longitude
D.
Population
Show solution
Solution
Latitude is the main factor that influences climate in a region.
Correct Answer:
B
— Latitude
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Q. What is the main factor that influences ocean currents?
A.
Wind
B.
Salinity
C.
Temperature
D.
All of the above
Show solution
Solution
All of the above factors influence ocean currents.
Correct Answer:
D
— All of the above
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Q. What is the main factor that influences the climate of a region?
A.
Altitude
B.
Latitude
C.
Longitude
D.
Population density
Show solution
Solution
Latitude is the main factor that influences the climate of a region.
Correct Answer:
B
— Latitude
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Q. What is the main feature of the Atal Pension Yojana? (2015)
A.
To provide loans to farmers
B.
To offer a guaranteed pension to workers in the unorganized sector
C.
To promote digital payments
D.
To enhance women's savings
Show solution
Solution
The Atal Pension Yojana offers a guaranteed pension to workers in the unorganized sector, ensuring financial security in old age.
Correct Answer:
B
— To offer a guaranteed pension to workers in the unorganized sector
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Q. What is the main focus of the Beti Bachao Beti Padhao scheme?
A.
To promote women's entrepreneurship
B.
To improve the sex ratio and promote education for girls
C.
To provide financial aid for women's health
D.
To enhance women's political participation
Show solution
Solution
The Beti Bachao Beti Padhao scheme focuses on improving the child sex ratio and promoting education for girls.
Correct Answer:
B
— To improve the sex ratio and promote education for girls
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