SAT (Stage-1) Mock Test

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SAT (Stage-1) Mock Test - 16

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements is/are false?

a. The process of diffusion is a slow process.
b. Xylem and phloem are present in all parts of the plant body.
c. Movement of minerals and water takes place from the leaves to the other parts of plants.

A
Only a

B
Both a and b

C
Only c

D
Only b and c

Solution

This is the correct option as this statement is false. Movement of minerals and water does not take place from the leaves to the other parts of plants.
Question 2
1 / -0

How many meiotic divisions are required to produce 10024 pollen grains?

A
2506

B
5012

C
10024

D
256

Solution

As one microspore mother cell produces four pollen grains after undergoing one meiotic division, 2506 MMC will produce 2506 x 4 = 10024 pollen grains after undergoing 2506 meiotic divisions.
Question 3
1 / -0

Which of the following statements is incorrect?

A
The radius of curvature of a concave mirror is twice its focal length.

B
When a ray of light passes from an optically denser medium to an optically rarer medium, the angle of refraction is greater than the angle of incidence.

C
The radius of curvature of a plane mirror is infinity.

D
Power of a convex lens is negative and that of a concave lens is positive.

Solution

Power is defined as the ability to converge the parallel beam of light. For a converging lens (convex lens), power is positive. Power of the diverging lens (concave lens) is taken as negative.
Question 4
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An object is placed at the centre of curvature of a concave mirror of focal length 16 cm. If the object is shifted by 8 cm towards the focus, then the nature of the image would be

A
real and magnified

B
virtual and magnified

C
real and diminished

D
virtual and diminished

Solution

An object is placed at the centre of curvature of a concave mirror of focal length 16 cm, i.e. at 32 cm from the pole. If the object is shifted by 8 cm towards the focus, then the object will be at 24 cm from the pole, i.e. between centre of curvature and focus. So, real, inverted and magnified image is produced.
Question 5
1 / -0

If two parallel conductors A and B of equal lengths carry currents I and 10I, respectively in the same direction, then

A
A and B will repel each other with the same force

B
A and B will attract each other with the same force

C
A will attract B, but B will repel A

D
A and B will attract each other with different forces

Solution

Force between two straight current carry conductors in same direction is attractive in nature and force between two straight current carry conductors in opposite directions is repulsive in nature. Each conductor exerts equal and opposite force on each other.