Model Questions for Scientific Assistant (IMD) Exam (Paper-2) PHYSICS - Set 43
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Answer with Q.No in Comment Box at the Bottom of Post.
1. Period of simple harmonic motion of a spiral spring or elastic thread is
given by
A. T = 2p
× (extension produced/gravitational field strength)
B. T = 2p
× (extension produced/”(gravitational field strength))
C. T = 2p
× (Ö(extension
produced)/gravitational field strength)
D. T = 2p
× Ö(extension
produced/gravitational field strength)
2. In order to slip one surface over another, maximum frictional force has
to be overcome, this maximum frictional force between two surfaces is also known
as
A. kinetic frictional force
B. maximal frictional force
C. limiting frictional force
D. resisting force
3. Van der Waals derived an expression for ‘pressure defect’, if observed
pressure is denoted as ‘p’ and volume is denoted as ‘V’, gas pressure in bulk of
gas is equal to:
A. p + a/V; where a: constant for particular gas
B. p + a/(V²); where a: constant for particular gas
C. p + (a × V); where a: constant for particular gas
D. p + (a × V²); where a: constant for particular gas
4. “Upthrust = Weight of liquid displaced” is known as
A. Bernoulli’s Principle
B. Archimedes’ Principle
C. Pascal’s Law
D. Coulomb’s law
5. Assuming uniform density of core, acceleration due to gravity below
Earth’s surface is
A. inversely proportional to square of distance from center of Earth
B. inversely proportional to distance from center of Earth
C. directly proportional to square of distance from center of Earth
D. directly proportional to distance from center of Earth
6. When a gas or a liquid is subjected to an increased pressure, substance
contracts, bulk strain is defined as
A. final volume D original volume
B. final pressure D original pressure
C. change in volume D original volume
D. original volume D change in volume
7. Tensile stress is equal to
A. Force per unit area
B. Force per unit volume
C. Extension per unit length
D. Extension per unit area
8. Dimensions of relative density are
A. mass × length-3
B. mass × length3
C. It has no dimensions, since it’s a ratio of two densities
D. length3 × mass-1
9. Dimensions of gravitational constant ‘G’ are:
A. [M]-1 [L]3 [T]-2
B. [M] [L]3 [T]-2
C. [M]-1 [L]2 [T]-1
D. [M] [L]-1 [T]2
10. A person of mass ‘m’ kg jumps from a height of ‘h’ meters, he will land
on ground with a velocity equal to:
A. Ö(2
× g × h)
B. 1/h ×
Ö(2 × g)
C. 2gh
D. 2Ö(g
× h)
