SAT (Stage-1) Mock Test

Result

SAT (Stage-1) Mock Test - 21

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Two copper wires of lengths I and 2l have radii r and 2r, respectively. What is ratio of their specific resistances?

A
1 : 2

B
2 : 1

C
1 : 1

D
1 : 3

Solution

Since specific resistance or resistivity depends upon material of wire, so specific resistance wil be same for both the wires. Hence, ratio will be 1 : 1.
Question 2
1 / -0

A fish views obliquely, from under water, a fisherman who is standing on the bank of a lake. How will the man appear to that fish?

A
Taller than he actually is

B
Shorter than he actually is

C
Of the same height as he actually is

D
Depends on the obliquely

Solution

As the observer is in denser medium and the object is in rare medium, hence ray of light travelling from denser medium to rare medium will bend away from the normal.
Apparent height of the person = Refractive index × Actual height

So, the man will appear taller than he actually is.
Question 3
1 / -0

The following question has four choices, out of which ONLY ONE is correct.

A proton is projected horizontally eastwards in a uniform magnetic field which is horizontal and southwards in direction. The proton will be deflected

A
upwards

B
downwards

C
southwards

D
northwards

Solution

According to Fleming's left hand rule, if we stretch - the thumb, the first finger and the second finger - such that they are perpendicular to each other, then the first finger gives the direction of the magnetic field, the second finger gives the direction of the motion of the positive charge particle and the thumb gives the direction of the force exerted by the magnetic field on the positive charge particle. So, when a proton is projected horizontally eastwards in a uniform magnetic field, which is horizontal and southwards in direction, the proton will be deflected downwards.
Question 4
1 / -0

Raw material(s) required for the preparation of soaps is/are

A
vegetable oil

B
sodium hydroxide

C
sodium chloride

D
All of the above

Solution

Raw materials required for the preparation of soaps are vegetable oil, sodium hydroxide and sodium chloride.
Vegetable oil + NaOH → Soap + Glycerol
NaCl helps to precipitate out the soap once it is formed.