1. Which of the following is incorrectly matched -
1. Archimedes Principle of buoyancy;
2. Galileo Galilei Law of inertia
3. Christiaan Huygens Wave theory of rays
4. Isaac Newton Universal Law of gravitation
Answer - 4
2. Consider the following statements regarding Radiocarbondating, which of the following is untrue?
1. Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon (14C), a radioactive isotope of carbon.
2. The method was developed by Willard Lullaby
3. In nature, carbon exists as two stable, nonradioactive isotopes: carbon-12 (12C), and carbon-13 (13C)
4. Carbon-14 (14C), is also known as "radiocarbon".
Answer - 2
3. The modulus of rigidity is the ratio of -
1. longitudinal stress to longitudinal strain
2. volume stress to volume strain
3. shearing stress to shearing strain
4. tensile stress to tensile strain
Answer - 3
4. Consider the statements regarding the simple harmonic motion
1. It is a type of periodic motion where the restoring force is directly proportional to the displacement and acts in the direction opposite to that of displacement.
2. Faraday's law has stated the definition of simple harmonic motion
3. For one-dimensional simple harmonic motion, the equation of motion, which is a second-order linear ordinary differential equation with constant coefficients, can be obtained by means of Newton's second law.
4. The common example of SHM is Mass on spring.
Answer - 2
5. Why a t-shirt keeps us warm than a sweater along with a t-shirt in winters, which of the following is an effect?
1. Due to transmission of heat
2. Due to conduction
3. Due to viscosity
4. None of these
Answer - 4
6. Optical fibres are based on the phenomenon of -
1. interference
2. dispersion
3. diffraction
4. total internal reflection
Answer - 4
7. A current carrying conductor is associated with -
1. a magnetic field
2. an electric field
3. an electro-magnetic field
4. an electrostatic field
Answer - 1
8. X-rays region lies between -
1. ultraviolet and visible region
2. visible and infrared region
3. gamma-rays and ultraviolet region
4. short radio waves and long radio waves
Answer - 3
9. Energy is continuously created in the sun due to -
1. nuclear fusion
2. nuclear fission
3. radioactivity
4. artificial radioactivity
Answer - 1
10. Negative feedback in amplifiers -
1. increase in bandwidth and decrease in noise
2. decrease in bandwidth and decrease in noise
3. increases bandwidth and increase in noise
4. decrease bandwidth and increases noise
Answer - 1
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