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Question 1

A ball is thrown vertically upwards from the ground with an initial velocity of 50m/s. what is the total time spent by the ball in the air?

Options

A) 2.5s

B) 5.0s

C) 10.0s

D) 15.0s

E) 20.0s

Comments (4)

Question 2

A body of mass 60g appears to have a mass of 39g when totally immersed in oil and appears to have mass of 36g when totally immersed water. Calculate the relative density of oil.

Options

A) \(\frac{8}{7}\)

B) \(\frac{13}{12}\)

C) \(\frac{12}{13}\)

D) \(\frac{7}{8}\)

E) \(\frac{13}{20}\)

Comments (6)

Question 3

Two resistors R\(_1\), and R\(_2\) are connected in parallel, R\(_2\) being greater than R\(_1\) the combined resistance is

Options

A) Less than R\(_1\)

B) greater than R\(_2\)

C) The sum of R\(_1\)

D) The difference of R\(_1\), and R\(_2\)

E) greater than R\(_1\) but less than R\(_2\)

Comments (5)

Question 4

Two capacitance of 6\(\mu f\) and 8\(\mu f\) are connected in series. What additional capacitance must be connected in series with this combination to give a total of 3\(\mu f\)?

Options

A) 3\(\mu f\)

B) 16\(\mu f\)

C) 24\(\mu f\)

D) 30\(\mu f\)

E) 14\(\mu f\)

Comments (1)

Question 5

The upper and lower fixed points of the thermometer are 90 and 10 respectively. Determine the temperature on the Kelvin scale when the reading on T is 30\(^{\circ}\).

Options

A)
25K
B)
298K
C)
80K
D)
303K
E)
293K
Comments (5)

Question 6

If a copper has a heat capacity of 80J/\(^{\circ}\)C and specific heat capacity of 400J/Kg, calculate its mass.

Options

A) 0.20kg

B) 320kg

C) 20.0kg

D) 0.02kg

E) 5kg

Comments (1)

Question 7

An object of height 12.0cm is placed 240cm from 3 pinhole camera. If the image distance from the pinhole is 10.0cm, calculate the image height.

Options

A) 12.0cm

B) 5.0cm

C) 120.0cm

D) 120.0m

E) None of the above

Comments (2)

Question 8

Calculate the minimum value of the refractive index of a 45\(^{\circ}\) prism which used to tum a beam of light by total internal reflection through 90\(^{\circ}\).

Options

A)
1.67
B)
1.50
C)
1.41
D)
1.20
E)
4.11
Comments (3)

Question 9

A wave of frequency 75Hz form a stationary pattern in a medium where the distance between adjacent nodes is 2.0m. what is the velocity of the wave?

Options

A) 3m/s

B) 30m/s

C) 300m/s

D) 0.3m/s

E) 150m/s

Comments (3)

Question 10

The half-life of a nuclide is 5 days, what fraction of the initial sample will remain after 30 days.

Options

A) \(\frac{1}{8}\)

B) \(\frac{1}{16}\)

C) \(\frac{1}{32}\)

D) \(\frac{1}{36}\)

E) \(\frac{1}{64}\)

Comments (1)