Q:

What is the reason for formation of Mirage in desert?

A) Refraction of light	B) Reflection of light
C) Total internal reflection of light	D) Both Refraction and Total internal reflection of light

Answer & Explanation Answer: D) Both Refraction and Total internal reflection of light

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Q:

What will be the value of the kinetic energy (Ek) of a moving body with mass m, if its speed is doubled from v to 2v?

A) 1/2 Ek	B) 4 Ek
C) There will be no change in Ek	D) 2 Ek

Answer & Explanation Answer: B) 4 Ek

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Q:

When a compressed slinky is released it converts potential energy into

A) Heat energy	B) Mechanical energy
C) Chemical energy	D) Kinetic energy

Answer & Explanation Answer: D) Kinetic energy

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Q:

While releasing the arrow from a stretched bow, the PE of the bow is converted into?

A) chemical energy	B) kinetic energy
C) sound energy	D) heat energy

Answer & Explanation Answer: B) kinetic energy

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Q:

Which of the following is the largest mammal?

A) Whale	B) Rhinoceros
C) Elephant	D) Human

Answer & Explanation Answer: A) Whale

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Q:

_____________ is the number of deaths in the population during a given period.

A) Natality	B) Mortality
C) Immigration	D) Emigration

Answer & Explanation Answer: B) Mortality

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Q:

Which of the following is man-made fibre?

A) Cotton	B) Wool
C) Silk	D) Nylon

Answer & Explanation Answer: D) Nylon

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Q:

Find the wrong number in the series. 225, 206, 188, 176, 165, 158, 153

A) 225	B) 188
C) 176	D) 153

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