set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

A spherical body moves with a uniform angular velocity (w) around a circular path of radius r. Which one of the following statements is correct?

a) The body has a radial acceleration 2/5$ω^2$r directed away from the centre of the path

b) The body has no acceleration

c) The body has a radial acceleration $ω^2r$ directed toward centre of path

d) The body has an acceleration $ω^2$ tangential to its path

Question : 2

A parachutist jumps from a height of 5000 metre. The relationship between his falling speed, v and the distance fallen through d is best represented as :

a)

b)

c)

d)

Question : 3

Which one of the following pairs does not have the same dimension?

a) Focal length and height

b) Potential energy and kinetic energy

c) Density and specific gravity

d) Gravitational force and frictional force

Question : 4

Match List-I with List-II and select the correct answer using the code given below the lists.

a) 1 2 3 4

b) 2 1 3 4

c) 1 2 4 3

d) 2 1 4 3

Question : 5

Which one of the following is not correctly matched?

a) Agnstrom - Unit of wavelength of light

b) Knot - Measure of speed of ship

c) Nautical mile - Unit of distance used in navigation

d) Light year - Unit of measuring time

Question : 6

‘Joule’ is related to energy in the same way as ‘Pascal’ is related to

a) Density

b) Mass

c) Pressure

d) Purity