General Knowledge
PHYSICS MCQs
Total Questions : 1565
| Page 3 of 157 pages
Answer: Option A. -> Fossils
Radiocarbon dating technique is used to estimate the age of fossils.
Radiocarbon dating technique is used to estimate the age of fossils.
Answer: Option A. -> Gamma ray
Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.
Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.
Answer: Option A. -> Nuclear Physics
Particle physics studies the nature of particles, while nuclear physics studies the atomic nuclei.
Particle physics studies the nature of particles, while nuclear physics studies the atomic nuclei.
Answer: Option A. -> Electron
In beta decay what is emitted electron.
In beta decay what is emitted electron.
Answer: Option B. -> Neutron
Nuclear Fission is caused by the impact of neutron.
Nuclear Fission is caused by the impact of neutron.
Answer: Option A. -> Atmospheric pressure
The boiling point of water depends upon the atmospheric pressure.
The boiling point of water depends upon the atmospheric pressure.
Answer: Option A. -> Gravitational force
Gravitation is by far the weakest of the four interactions at the atomic scale, where electromagnetic interactions dominate.
Gravitation is by far the weakest of the four interactions at the atomic scale, where electromagnetic interactions dominate.
Answer: Option A. -> 0.1 N
Mass = 10 g = 0.01 kg
Length = 10 cm = 0.1 m
Time = 0.1 s
Force = mass × length/ time ^2
= > Force = 0.01 × 0.1 × 0.1-2 = 0.1 N
Mass = 10 g = 0.01 kg
Length = 10 cm = 0.1 m
Time = 0.1 s
Force = mass × length/ time ^2
= > Force = 0.01 × 0.1 × 0.1-2 = 0.1 N
Answer: Option C. -> Higher temperature is attained for cooking
Food is cooked more quickly in a pressure cooker because at the higher pressure (1 bar/15 psi), the boiling point of water rises from 100°C (212°F) to 121°C (250°F). Since less water or liquid has to be heated, the food reaches its cooking temperature faster.
Food is cooked more quickly in a pressure cooker because at the higher pressure (1 bar/15 psi), the boiling point of water rises from 100°C (212°F) to 121°C (250°F). Since less water or liquid has to be heated, the food reaches its cooking temperature faster.
Answer: Option C. -> 105 Pa
One bar is equal to 105 Pa.
One bar is equal to 105 Pa.
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