Tag: math & puzzles

Questions Related to math & puzzles

What type of lens is a magnifying glass?
general knowledge math & puzzles

  1. Plano-Concave

  2. Plane Glass

  3. Convex

  4. Concave

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Correct Option: C

When a spring is released, its potential energy is converted to
general knowledge math & puzzles

  1. Electrical Energy

  2. Magnetic Energy

  3. Light Energy

  4. Kinetic Energy

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Correct Option: D

How much heat is required to raise the temperature of 1g of water by 1 degree C.
general knowledge math & puzzles

  1. 100 Joules

  2. 100 Calories

  3. 1 Calorie

  4. 1 Joule

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Correct Option: C

The presence of charge on a substance can be confirmed by a
general knowledge math & puzzles

  1. Thermometer

  2. Ammeter

  3. Gold Leaf Electroscope

  4. Electrodes

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Correct Option: C

What is the speed of sound in air in meters per second (at a pressure of one atmosphere and temperature of 25 degree C)?
general knowledge math & puzzles

  1. 110

  2. 330

  3. 230

  4. 490

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Correct Option: B

The SI unit of electric current is
general knowledge math & puzzles

  1. Mho

  2. Farad

  3. Ohm

  4. Ampere

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Correct Option: D

The wire of an electric bulb is known as the
general knowledge math & puzzles

  1. Luminous Wire

  2. Radiator

  3. Heating Element

  4. Filament

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Correct Option: D

Which of the following is not a good heat insulator?
general knowledge math & puzzles

  1. Wood

  2. Wool

  3. Feathers

  4. Iron

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Correct Option: D

What is the name of the point where light rays from infinity coverge after passing through a lens?
general knowledge math & puzzles

  1. Focus

  2. Parabola

  3. Center

  4. Infinity

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Correct Option: A

Nuclei of atoms that make up a newborn baby were made in:
general knowledge math & puzzles

  1. In the mother's body

  2. Ancient stars

  3. The food the mother eats before giving birth

  4. The earth

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Correct Option: B