Question
Which of the following constitutes a food chain
?Solution
A simple food chain involves producers (grass), primary consumers (goat), and secondary consumers (human).
The resistance of a wire is 10 Ω. What will be its resistance if its length is tripled? (Assume uniform cross-sectional area)
Smog is a combination of –
A 220 V, 100 W bulb is connected to a 110 V source. Calculate the power consumed by the bulb
Two bodies of masses m and 4m are separated by a distance d. Where will the gravitational field be zero along the line joining them?
What type of lens is used to correct myopia (nearsightedness)?
A body is thrown vertically upward with a velocity of 20 m/s. What will be its velocity at the highest point? Â
A sugar solution in a tube of length 2.0 dm produces optical rotation of 12°. Then, the sugar solution is diluted to one half of its initial concentra...
Which instrument is used to measure the moisture content in the air?
The energy emitted by the Sun is due to
A plane mirror is placed on a wall. A man walks directly toward the mirror at 2 m/s. The speed at which his image approaches him is: