13/09/2024
PAF initial test experience from all centers (13-9-2024)
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Value of Rydberg constant? (most repeated)
Ans:
10,973,731.6 per meter
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Einstein won Nobel prize in 1921 for : (also remember year)
Ans:
photoelectric effect
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If pressure is increased, then speed of liquid will be?
Ans:
decreases
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If the shape of the substance is changed due to stress, what is it called?
Ans:
Deformation
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If length is changed by stress, then it is called?
Ans:
Tensile strain
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A meter is to distance and a clock is to time. (repeat)
Ans:
shoot
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i.i=j.j=k.k=?
Ans:
1
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What is the voltage meter used for?
Ans:
measuring the electric potential difference
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Our eye can see max close?
Ans:
11 cm
but it is age dependent
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Impulse is a product of? (most repeated)
Ans:
force and time
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In micro, which lens is used?
Ans:
Convex lens
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1 joule=
Ans:
1 N x 1 m
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Charge on electron was studied by?
Ans:
Robert Millikan
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Example of photo electric ? (Repeated)
Ans:
electric eye
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Which waves travel in medium? (Repeat)
Ans:
Mechanical Wave
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Frequency of second pendulum?
Ans:
0.5 Hz
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Formula for refractive index? (Repeat)
Ans:
n=c/v
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Distance between two anti-nodes?
Ans:
λ/2
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Which pair have same dimensions? (most Repeated)
Ans:
Momentum and impulse
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What happens to kinetic energy if the mass is doubled?
Ans:
double
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Noble price 1979? (most repeated, also remember year)
Ans:
Dr Abu's Salam
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If the cost of 15 eggs is Rs. 75, then what is the cost of 4 dozens of eggs?
Ans:
The cost of 15 eggs is RS.75
Cost of 4 dozen=?
So, 15 eggs = 75
1egg=75÷15=5/1
4dozen=15×4=48
48×5=240
Therefore, the cost of 4 dozen is Rs. 240.
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