SAT (Stage-2) Mock Test

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SAT (Stage-2) Mock Test - 47

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements is/are false?

a. Germany fought the First World War against the Allies alongside the Austrian empire.
b. The Allies won in November 1918, defeating Germany and the Central Powers.
c. After the establishment of democracy, the deputies were elected to the Reichstag on the basis of universal votes by only adult males.

A
Only a

B
Only b

C
Only c

D
b and c

Solution

After the establishment of democracy, the deputies were elected to the Reichstag on the basis of universal votes by all adults, including women, this s called Universal suffrage. It gives the right to vote to all adult citizens, regardless of wealth, income, gender, social status, race, ethnicity, or any other restriction, subject only to relatively minor exceptions.
Question 2
1 / -0

On which of the following days did the Fire Decree indefinitely suspend civic rights?

A
28^th February, 1933

B
30^th January, 1933

C
3^rd March, 1933

D
24^th October, 1929

Solution

The Reichstag Fire Decree is the common name of the Decree of the Reich President for the Protection of People and State issued by German President Paul von Hindenburg on the advice of Chancellor Adolf Hitler on 28 February 1933 in immediate response to the Reichstag fire.
Question 3
1 / -0

Which of the following statements is correct?

A
In the late nineteenth century, Shangai became the hub of the new print culture.

B
The oldest Japanese book, printed in AD 868, is the Bible.

C
Isaac Newton proclaimed, "Tremble, therefore, tyrants of the world! Tremble before the virtual writer!"

D
Hafiz was a sixteenth-century poet whose collected works are known as Diwan.

Solution

The print technology was first developed in China, Japan and Korea. Western printing techniques and mechanical presses were imported in the late nineteenth century as Western powers established their presence in China and Shanghai became the hub of the new print culture, catering to the Western-style schools.
Question 4
1 / -0

Who among the following supported the Weimer Republic?

I. Socialists
II. Catholics
III. Democrats

A
Only I and III

B
Only I and II

C
Only II and III

D
I, II and III

Solution

The Weimar Republic was the federal republic and semi- presidential representative democracy established in 1919 in Germany to replace the German Empire.
1. Socialists
2. Catholics
3. Democrats supported the Weimer Republic.
Question 5
1 / -0

Which of the following is/are the characteristic feature(s) of the 1905 revolution?

I. The incident known as `Bloody Sunday`, started a series of events.
II. By 1905, Socialists and Trade Unionists formed a labour party in Britain.
III. The Tsar changed the voting laws and packed the third Duma with conservative politicians.

A
Only I

B
I and III

C
Only III

D
I and II

Solution

Statements I and III are correct.
Question 6
1 / -0

When an electric heater is switched on, the current (i) flowing through it is plotted against time (t). Taking into account the variation of resistance with temperature, which of the following best represents the resulting curve?

A

B

C

D

Solution

The filament of the heater reaches its steady resistance when the heater reaches its steady temperature, which is much higher than the room temperature The resistance at room temperature is than much lower than the resistance at its steady state When the heater is switched on it draws a larger current than its steady state current As the filament heats up, its resistance increases and current falls to steady state value.
Question 7
1 / -0

Which of the following scientists first concluded that a current carrying conductor is associated with a magnetic field?

A
Oersted

B
Faraday

C
Maxwell

D
Biot-Savart

Solution

Danish physicist Hans Christian Oersted discovered the relationship between electric current and magnetism. He concluded that a magnetic field can be associated with a current carrying conductor. This field strength depends on the current strength in the conductor.
Question 8
1 / -0

Three cells of EMF 1.5 volts each and internal resistance of 1 ohm are connected in parallel. This combination is used to send current through an external resistance of 0.001 ohm. What is the value of the current?

A
1.5 A

B
0.5 A

C
4.5 A

D
3.0 A

Solution

The three cells are connected in parallel. Voltage remains the same in a parallel combination. Hence, voltage will be the same across all the cells and the external resistance. Current passing through the external resistance, i = 1.5/1.001 = 1.499 A ≈ 1.5 A
Question 9
1 / -0

A 20 kg monkey slides down a vertical rope with a constant acceleration of 7.0 ms^-2. If g = 10 Nkg^-1, the tension in the rope will be

A
60 N

B
70 N

C
140 N

D
200 N

Solution

T = tension in the string.
The weight of monkey acting downwards, W = mg = 20 ×10 = 200 N
The acceleration of monkey (a) = 7 m/s²
Net force on monkey = W - T
W - T = m a
200 - T = 20(7)
T = 200 - 140 = 60 N
Question 10
1 / -0

A rifle bullet loses 1/10th of its velocity in passing through a plank. What is the least number of such planks required just to stop the bullet?

A
5

B
7

C
6

D
8

Solution

Let the thickness of plank be d.
Using the equation of motion,
v² - u² = 2as
The bullet stops finally, so equation can be written as
0 - u² = 2as
Now, let the number of planks required be n, then the equation can be written as
-u² = n2as
u = v_o and s = d
-v_o² = 2nad
Question 11
1 / -0

To see a full size image of ourselves, we should use a plane mirror of ____ times the height of ourselves.

A
3

B
2

C
1/2

D
1/4

Solution

To see the full size image of the man, the man needs a mirror with height 1/2 of the height of the man.
Question 12
1 / -0

We always get real image in a convex lens if the object is situated beyond

A
optical centre

B
focus

C
centre of curvature

D
None of the above

Solution

We always get real image in a convex lens if the object is situated beyond focus. Ray tracing gives the position of the images by drawing one ray perpendicular to the lens that passes through the focal point, and a second ray that passes through the center of the lens. The intersection of the two rays gives the position of the image which is inverted and larger than the object.
Question 13
1 / -0

The value of g at a particular point is 9.8 m/s². Suppose, the Earth suddenly shrinks uniformly to half its present size without losing any mass. The value of 'g' at the same point (assuming that the distance of the point from the centre of the Earth does not shrink) will now be

A
4.9 m/s²

B
9.8 m/s²

C
3.1 m/s²

D
19.6 m/s²

Solution

Consider a point A outside the Earth where value of g = 9.8 m/s², as shown in the figure

Let height of the point from the surface of the Earth be h.
Let radius of the Earth be R.
Acceleration due to gravity at height h from the surface of the Earth is
Question 14
1 / -0

A person travels along a straight road for the first half-length with a constant speed v₁ and the second half-length with a constant speed v₂. The average speed v is

A
(v₁ + v₂)/2

B
2v₁v₂/(v₁ + v₂)

C
(v₁v₂)^1/2

D
(v₂/v₁)^1/2

Solution

A person travels along a straight road.
Question 15
1 / -0

The acceleration due to gravity on the Moon is one-sixth that on the Earth. A high-jumper can jump 2 m on Earth. What distance can he jump on the Moon?

A
2 m

B
1/3 m

C
12 m

D
3 m

Solution

The initial potential energies on both the Earth and the Moon will be same. So, by equating the energies, we get,
mgh = mg'h'
g × 2 = g/6 × h'
h' = 12 m