999+ Physics Questions Answers Explanation MCQ

Q:

The spring balance works on the principle of __________

A) Boyle's Law	B) Hooke's Law
C) Bernoulli's principle	D) Pascal's Law

Answer & Explanation Answer: B) Hooke's Law

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Q:

The value of universal gravitation constant (G) was determined by

A) Henry Cavendish	B) Antoine L Lavoisier
C) Isaac Newton	D) John Dalton

Answer & Explanation Answer: A) Henry Cavendish

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Q:

Bubbles of air rise up through liquids due to

A) Surface tension and adherence	B) viscosity and buoyancy
C) air current over the liquid and buoyancy	D) Up thrust and surface tension

Answer & Explanation Answer: B) viscosity and buoyancy

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Q:

Which of the following is an example of thermoplastics?

A) Bakelite	B) Melamine
C) PVC	D) No option is correct

Answer & Explanation Answer: C) PVC

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Q:

Which of the following is NOT an application of Fiber optics?

A) Power Generation	B) Computer Networking
C) Sensors	D) Power Transmission

Answer & Explanation Answer: A) Power Generation

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Q:

A broadcasting station transmits waves with a frequency of $71 x 10^{4}$ Hz and a speed of $3 x 10^{8}$ m/s. The wavelength of the wave is

A) 324.6 m	B) 422.5 m
C) 208.4 m	D) 418.8 m

Answer & Explanation Answer: B) 422.5 m

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Q:

Weight (W) of a body can be given by the formula

A) W = mv	B) W = mf
C) W = ms	D) W = mg

Answer & Explanation Answer: D) W = mg

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Q:

In the equation of motion $2 as = v^{2} - u^{2}$ , s represents _________________.

A) speed	B) displacement
C) velocity	D) acceleration

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