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Quiz 225
Mdcat-past-papers Quiz
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4481. The wave that has the highest frequency & penetrating power is :
X-rays
Ultraviolet rays
Gamma rays
Microscopic
4482. According to First law of thermodynamics when heat flows into a system and no work is done the internal energy of the system must :
Increase
Decrease
Remains constant
Becomes zero
4483. If the length of the conductor is made 4 times its original length, its resistance becomes :
quarter
half
zero
4 times
4484. The unit of temperature coefficient of resistivity is :
1/C
1/K
1/A
1/omege
4485. The work done by the gravitational force on an object as it moves from a reference level to a higher point is:
Always positive
Always negative
Zero
Depends on the path taken
4486. If two speakers emit sound at same frequency and phase, maximum loudness occurs when:
Path difference = λ/2
Path difference = λ
Path difference = λ/4
Path difference = 3λ/4
4487. When an object attains terminal velocity, its acceleration is:
9.8 m/s2
Zero
1 m/s2
9.8 m/s2
4488. A 0.5 kg ball moving at 6 m/s has kinetic energy
9 J
18 J
6 J
3 J
4489. A fluid is flowing through a tube, to undergo transition from laminar to turbulent flow its velocity must be:
Slightly less than critical velocity
equal to critical velocity
greater than critical velocity
increasing gradually but less than critical velocity
4490. For two equal positive charges, the electric field weakest?
Midway between them
Along the perpendicular bisector
Close to either charge
At infinity
4491. A projectile is launched in air with certain angle; its velocity is maximum at:
Point of projection
Highest point
Between launching and highest point
At all points
4492. If the distance between two charges is halved and magnitude of charges are also doubled, then the force between these charges becomes:
two times
four times
eight times
sixteen times
4493. If a body having mass m1 (2 kg), moving with 5 m/s approaches another mass, m2 (3 kg) with speed of 1 m/s in same direction, relative speed of approach is 4 m/s. Relative speed of separation after collision will be:
4 m/s
2 m/s
6 m/s
depends on masses
4494. Which of the following sentences has correct subject verb agreement?
The teacher give the students homework.
The teacher gives the students homework.
The teachers gives the student homework.
The teachers given the student homework.
4495. The keys were found ______ the drawer where you left them last week.
under
in
on
beside
4496. Identify the sentence among the following, which is punctuated correctly?
The teaching staff asked the principal what time the meeting would start.
The teaching staff asked the principal: "What time would the meeting start?"
The teaching staff asked the principal, "What time would the meeting start?"
The teaching staff asked the principal: "What time would the meeting start?"
4497. "She was elated when she got first position in exams." What is the meaning of "elated" in this sentence?
Disappointed
Worried
Excited
Mad
4498. The board of directors expressed ______ disappointment with the financial results.
their
its
his or her
one's
4499. It rained all night; ______ the roads were flooded in the morning.
similarly
instead
as a result
in contrast
4500. The manager accepted the cashier's ______ for coming late.
explanation
explanation
explanation
explanation
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