Q:

Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?

A) -4.33 diopters	B) 12.33 diopters
C) -12.33 diopters	D) 4.33 diopters

Answer & Explanation Answer: B) 12.33 diopters

Explanation:

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Q:

Humidity is a measure of the _______________.

A) pressure in the air	B) viscosity of the air
C) air resistance	D) moisture in air

Answer & Explanation Answer: D) moisture in air

Explanation:

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Q:

In a transformer the tappings are generally provided on

A) Primary side	B) low voltage side
C) High voltage side	D) Secondary side

Answer & Explanation Answer: C) High voltage side

Explanation:

Tappings are provided in order to maintain the terminal voltage across the loads within the permissible specified limits with respect to load variations.

Generally tappings are preferred on HV side, because the HV side is low current side, tap changer involves low current interruption and large variations or small steps are possible due to more no of turns.

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Q:

Which of the following glows with special colour depending on the nature of gas in the fluorescent tube?

A) Plasma	B) Hydrogen
C) Helium	D) Bose-Einstein condensate

Answer & Explanation Answer: A) Plasma

Explanation:

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Q:

Which company developed 'Swift' Programming Language?

A) Google	B) Microsoft
C) Facebook	D) Apple

Answer & Explanation Answer: D) Apple

Explanation:

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Q:

In Microsoft Word, under paragraph formatting ___________ is used to align paragraph on right, left and center.

A) Font style	B) Indentation
C) Alignment	D) Spacing

Answer & Explanation Answer: C) Alignment

Explanation:

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Q:

Which country hosted the 'Bodhi Parva : BIMSTEC Festival of Buddhist Heritage' from 8-10 December 2017 as part of BIMSTEC's 20th anniversary celebrations?

A) Nepal	B) China
C) Bhutan	D) India

Answer & Explanation Answer: D) India

Explanation:

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Q:

The commonly used thermometric substance is _____.

A) mineral oil	B) Alcohol
C) Mercury	D) Petrol

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