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An ant completes moving along a circle in time 5s. How much time will it take to travel along the diameter and come back?

Let the internal circuit of a torch contain a cell, key and a bulb connected with wires. What happens when the torch is switched on?

The precession of the Moon's nodes means that

The diagram shows the use of a lever. This is a ___ order lever.

Which of the following is not a valid evidence to establish the fact that the Moon revolves around the Earth?

The rod connecting the wheels in any vehicle is called a/an:

Mechanical advantage of an inclined plane is always:

Pick the correctly punctuated form of the given sentence.

dear god what a fool i am

Hope you paid attention to the question! Now tell us in which of these cases will current flow in the circuit?

Unlike poles of magnets ___ each other.

All planets, including Earth, revolve around the Sun. The Sun is

Which of the following forces can be used to pick up scattered iron pins?

There are various types of galaxies in the Universe. Analyse the pictures in the options given below and identify which of the images is of the "Barred Spiral" type galaxy?

Two formula one cars in a race have the same mass but their kinetic energies are different. The ratio of their kinetic energies is 1:16. What would be the corresponding ratio of their velocities?

One water molecule constitutes of:

In the solution to this problem "A machine has a velocity ratio of 4. It is used to raise a load of 200N by 4m using an effort 20kgf. Find the work done on the machine. Take g = 10 m/s2​." effort is calculated as 200. Please explain how this was calculated & the formula for this. Also do explain the unit kgf of effort (what does f stand for).

The lengths of four pencils are measured using a large scale. Which of them is longest if head and tip of the pencil is at:

An electric bell uses ________.

Which of the following options illustrate the positive effects of friction?

You are given a transparent glass sheet. Suggest any two ways to make it translucent without breaking it.​

Which of the following situations involves a person using a simple machine to get a work done?

At home you must have seen switch boards. When you press a button on the switch board, you see that the bulb, fan or fridge gets powered. Through that button, the circuit is attached that helps in switching them on and off. This component used for making and breaking a circuit is known as ________.

Name the instrument used to find out main directions.

Classify the following as good conductors and insulators:

Wood, plastic, copper, rubber, silver, iron, glass, steel, distilled water, tap water, sea water

John and Sam were playing with empty bottles, John took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.

(i)Water did not enter the bottle when it was in inverted position.
(ii)Bubbles of air came out from the bottle as soon as it was tilted.
(iii)Some water entered the bottle
(iv)No bubbles formed, only water entered the bottle.

Which observations is/are correct?

A piece of a thread is used to measure lengths and distances in ______ objects.

Two friends Alexa and Siri are sitting inside a train which is moving at a constant speed. With respect to Alexa, Siri

Change the units of the following measures into the measures given below. [3 MARKS]

$\begin{array}{ccc}\text{Measure}& \text{Change trom}& \text{Change to}\\ 7& \text{Kilograms}& \text{Grams}\\ 274& \text{Millimeters}& \text{Centimeters}\\ 145& \text{Paise}& \text{Rupees}\end{array}$

_________friction is acting between wheels of a running vehicle and ground.

Objects that emit their own light are called?

Which of the following is the example of transverse wave

[CPMT 1999]

Look at the figure given below:

Without which of the following forces given below, the person would not be able to climb the wall?

A compass is generally used to indicate _________.

The variation in the kinetic energy (K.E.) and the potential energy (P.E.) of a particle moving along the x-axis are shown in the graphs below. Which one of the following graphs violates the law of conservation of energy?

It is easy to move our finger in honey than in water because

Which of the following should be the proper position of the eye for taking the reading?

10 coins are placed upon each other. If total height of the stack is $5cm$, what is the thickness of one coin?

A vibrating body is known to generate:

1 mile = __ kilometer.

What action does a person apply while hanging upside down from a rope?

When your mom holds a papad with tongs for roasting it, what kind of machine is she using?

If a car does not change its position with time then it is said to be __________.

Which of the following is a luminous body?