Q:

A rocket is launched to travel vertically upward with a constant velocity of 20 m/s. After travelling for 35 seconds, the rocket develops a snag and its fuel supply is cut off. The rocket then travels like a free body. The height achieved by it is

A) 680 m	B) 720 m
C) 800 m	D) 700 m

Answer & Explanation Answer: B) 720 m

Explanation:

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Q:

What does the kinetic energy (KE) of a moving body depend upon?

A) Mass & its position	B) Weight & its position
C) Mass & acceleration	D) Mass & velocity

Answer & Explanation Answer: D) Mass & velocity

Explanation:

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Q:

Indian Government is hopeful of bringing at least one crore subscribers by March 2018 under the Atal Pension Yojana (APY). What is the age limit for APY?

A) 21 to 60 years	B) 18 to 40 years
C) 18 to 45 years	D) 21 to 70 years

Answer & Explanation Answer: B) 18 to 40 years

Explanation:

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Q:

A solar eclipse occurs when

A) moon comes in the middle of sun and earth	B) sun comes in the middle of moon and earth
C) earth comes in the middle of moon and sun	D) All of the above

Answer & Explanation Answer: A) moon comes in the middle of sun and earth

Explanation:

A solar eclipse happens when the moon gets in the way of the sun's light and casts its shadow on Earth. Solar eclipses happen when the New Moon comes between the Sun and Earth and blocks out the Sun's rays.

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Q:

One step in the production of hydroelectric power involves _____.

A) falling water that turns a turbine	B) electric current flowing across a dam
C) hot water from under the ground	D) tides that pour through a barrier dam

Answer & Explanation Answer: A) falling water that turns a turbine

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Q:

The acceleration due to gravity at the surface of the earth (mass M and radius R) is proportional to ___.

A) MR	B) M/R2
C) M2/R	D) M/R

Answer & Explanation Answer: B) M/R2

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Q:

What is the heat generated (in J) in a heating element of resistance 800 Ω when a current of 0.2 A passes through it for 40 seconds?

A) 6400	B) 1280
C) 640	D) 3200

Answer & Explanation Answer: B) 1280

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Q:

Mirages are formed primarily due to ___ of light.

A) Reflection	B) Diffusion
C) Refraction	D) Scattering

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