Physics MCQs:

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"It is not a lack of love, but a lack of friendship that makes unhappy marriages."

― Friedrich Nietzsche

Science-Physics-Multiple Choise Questions & Answers

প্রতিটি প্রশ্নের জন্য চারটি করে উত্তর থাকবে যার একটি সঠিক, বামদিকে A, B, C এবং D এর উপর ক্লিক করে সঠিক উত্তরটি দেখতে পারেন। যদি উত্তর সঠিক হয় তবে অপশনটির ডান দিকে টিক () আর উত্তর ভূল হলে ক্রস () চিনহ প্রদ্ররশিত হবে।

#: 61. Who discovered natural radioactivity?

A.

Marie Skłodowska-Curie

B.

Antoine Henri Becquerel

C.

Wilhelm Röntgen

D.

Nicolaus Copernicus

#: 62. Difference in speed of light in air and in denser medium is____________.

A.

reflective index

B.

density index

C.

transactional index

D.

refractive index

#: 63. Who was discovered the prism?

A.

Johannes Kepler

B.

Nicolaus Copernicus

C.

Isaac Newton

D.

Galileo Galilei

#: 64. A piece of glass with curved surface is called__________.

A.

prism

B.

mirror

C.

biconcave mirror

D.

lens

#: 65. Which of the following color does not reflect light?

A.

White color

B.

Red color

C.

Black color

D.

Green color

#: 66. Which of the following is a non-luminous object?

A.

Star

B.

Earth

C.

Tube-Light

D.

Fire

#: 67. Whcih objects exhibit light in thier own, what are them called ?

A.

Non-luminous objects

B.

Transparent objects

C.

Opaque objects

D.

Luminous objects

#: 68. Light travels slowest in which substance?

A.

Glass

B.

Air

C.

Diamond

D.

Vacuum

#: 69. Which one is wrong in four of the following?

A.

The light-emitting diode (LED) is particularly bright.

B.

A light-emitting diode (LED) is a semiconductor device.

C.

A light-emitting diode (LED) is monochromatic.

D.

A light-emitting diode (LED) is at a single wavelength.

#: 70. When light bounces of an object is called__________.

A.

reflection of light

B.

reflex of light

C.

referance of light

D.

refraction of light

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