Physics related questions and answers

DoThe Best
By DoThe Best October 21, 2015 14:43

1. Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this? Diffusion Refraction Internal reflection

A.I, II and III
B.I and II
C.II and III
D.I and III

Answer: Option D

2. Natural radioactivity was discovered by

A.Marie Curie
B.Ernest Rutherfor
C.Henry Baquerel
D.Enrico Fermi

Answer: Option C

3. Planets are

A.luminous heavenly bodies revolving around a star
B.non-luminous heavenly bodies
C.luminous heavenly bodies that twinkle
D.luminous heavenly bodies that do not twinkle

Answer: Option D

4. Supersonic plane fly with the speed

A.less than the speed of sound
B.of sound
C.greater than the speed of sound
D.of light

Answer: Option C

5. Mach number is used in connection with the speed of

A.sound
B.aircraft
C.spacecraft
D.ships

Answer: Option A

DoThe Best
By DoThe Best October 21, 2015 14:43
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