The weight of a body is zero when it is MCQ with Answer and Explanation

Question Report Error

The weight of a body is zero when it is

A. At poles

B. On moon

C. At centre of Earth

D. In orbit

Answer: Option C

Solution (By JKExamLibrary)

g=0 at centre, so weight zero.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

Dispersion of white light through a prism occurs because

A. Different colours have same speed in glass

B. White light is composed of seven colours

C. Prism absorbs colours

D. Refractive index is different for different colours

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Correct Answer: Option D

Explanation:
Dispersion is splitting of light into constituent colours due to variation of refractive index with wavelength. Violet deviates most, red least. Prism doesn't absorb but disperses. Rainbow formation is due to dispersion, refraction, reflection in water droplets.

This question belongs to: Science Physics

Question #2 Report Error

Who invented the electric bulb?

A. Alexander Graham Bell

B. Thomas Edison

C. Nikola Tesla

D. Michael Faraday

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Correct Answer: Option B

Explanation:
Thomas Alva Edison invented the practical incandescent light bulb in 1879. He also invented phonograph. Tesla contributed to AC system. Faraday electromagnetic induction. Bell telephone.

This question belongs to: Science Physics