SAT (Stage-1) M...

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.

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

In the network shown below, the ring has zero resistance. The equivalent resistance between the points A and B is

Two bulbs rated 200 W, 220 V and 100 W, 220 V are connected in series. Combination is connected to a 220 V supply. Power consumed by the circuit is

In the circuit show below, the voltmeter is of large resistance. The emf of the cell is E. The reading of the voltmeter is

The current in a simple series circuit is 5.0 A. When an additional resistance of 2.0 Ω is inserted, the current drops to 4.0 A. The original resistance of the circuit in ohms was

In the network shown below, each resistance is equal to R. The equivalent resistance between diagonally opposite corners is

If the density of a small planet is the same as that of Earth, while the radius of the planet is 0.2 times that of Earth, then the gravitational acceleration near the surface of that planet is

An underwater fish views obliquely a fisherman standing on the bank of a lake. To the fish, the man looks

Two thin equiconvex lenses, each of focal length 0.2 m, are placed coaxially with their optic centres 0.5 m apart. What is the focal length of the combination?

A plane glass slab is kept over various colour letters. The letter which appears least raised is

Which of the following statements is incorrect?

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

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

A charged particle moves along the line AB, which lies in the same plane of a circular loop of conducting wires as shown in the figure. Then,