Discoveries Flashcards

1
Q

Who invented the atomic battery
in 1912?

A

Henry Moseley

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2
Q

Who is known as the ‘Father of Indian Nuclear Programme’?

A

Homi Jehangir Bhabha

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3
Q

The spectrum of light was first explained by____.

A

Isaac Newton

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4
Q

Who discovered radium?

A

Pierre and Marie Currie

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5
Q

The Wright brothers completed the world’s first successful controlled powered flight in:

A

1903

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6
Q

The names of Wright brothers credited with inventing the aeroplane were:

A

Wilbur and Orville

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7
Q

Name the physicist who is credited with the discovery of the Neutron. This 1932 discovery led to his winning the Nobel Prize?

A

James Chadwick

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8
Q

The American scientist Edwin Hubble’s name is associated with which of these theories?

A

The Big Bang Theory

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9
Q

Who among the following scientists invented the Cotton Gin?

A

Eli Whitney

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10
Q

Who among the following scientists invented Kevlar?

A

Stephanie Louise Kwolek

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11
Q

Who among the following scientists invented dynamite?

A

Alfred Nobel

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12
Q

What did Wilhelm Conrad Roentgen discover?

A

X-Rays

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13
Q

Which scientist won the Nobel
prize in Physics in 1918 for the
discovery of ‘Energy Quanta’?

A

Max Karl Ernst Ludwig Planck Explanation: Max Karl Ernst Ludwig Planck won the Nobel prize in Physics in 1918 for the discovery of ‘Energy Quanta’.

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14
Q

Superconductivity was discovered by ______, who was also awarded the Noble Prize for
Physics in 1911.

A

Heike Kamerlingh Onnes

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15
Q

The discovery and understanding of electromagnetic induction is based on a long
series of experiments carried out by ______.

A

Faraday and Henry

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16
Q

A nautical mile is equal to __________.

A

1852 meters

17
Q

Hertz is the SI unit of:

A

Freequency

18
Q

What is the SI unit of pressure?

A

Pascal

19
Q

Which of the following is the SI unit of temperature?

A

Kelvin

20
Q

Rutherford’sα-particlescattering experiment on thin gold foil was responsible for the discovery of

A

atomic nucleus

21
Q

Magnification is?

A

The ratio of the observed size of specimen by a spherical mirror to the actual size of the specimen