Q:

An object of 1.2 cm height is placed 30 cm before a concave mirror of focal length of 20 cm toget a real image at a distance of 60 cm from the mirror. What is the height of the image formed?

A) -3.6 cm	B) -2.4 cm
C) 1.2 cm	D) 2.4 cm

Answer & Explanation Answer: B) -2.4 cm

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Q:

Mechanical energy is the sum of

A) kinetic energy + heat energy	B) kinetic energy + potential energy
C) potential energy + heat energy	D) chemical energy + electrical energy

Answer & Explanation Answer: B) kinetic energy + potential energy

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Q:

The SI unit of weight is a

A) Kg	B) Newton
C) Gram	D) Dyne

Answer & Explanation Answer: B) Newton

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Q:

Which of the following is NOT an example of potential energy?

A) Running water	B) Water stored in a dam
C) A raised hammer	D) A compressed spring

Answer & Explanation Answer: A) Running water

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Q:

If a ball is thrown vertically upwards with a velocity of 40 m/s, then what will be the magnitude of its displacement after 6 s?

A) 80 m	B) 40 m
C) 60 m	D) 20 m

Answer & Explanation Answer: C) 60 m

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Q:

A lens has a power +2.0 D. The type of lens and its focal length will be

A) Concave, -0.5 m	B) Convex, 0.5 m
C) Concave, 0.5 m	D) Convex, -0.5 m

Answer & Explanation Answer: B) Convex, 0.5 m

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Q:

WIMAX stands for

A) Wireless Interoperability for Microwave Access	B) Wired Interoperability for Microwave Access
C) Worldwide Interoperability for Microwave Access	D) Worldwide Infrastructure for Microwave Access

Answer & Explanation Answer: B) Wired Interoperability for Microwave Access

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Q:

In Indian parliamentary system, the leader of the largest opposition party having not less than _______ seats of total strength of the house is recognized as the leader of the opposition in that House.

A) 1/10 th	B) 1/9 th
C) 1/8 th	D) 1/7 th

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