Which of the following is a scalar quantity?

Which of the following energy conversions takes place when we use an electric iron?

A soldier who fires a bullet from a gun has the tendency to move backwards as the bullet flies forward.

This observation can be explained by:

The air resistance experienced by a moving car can be reduced by:

Which of the following instruments can be used to measure the excess pressure of a trapped mass of gas?

A body falling in air experiences terminal velocity when its:

Which of the following surfaces absorbs heat best?

A liquid-in-glass thermometer is graduated in mm instead of degrees Celsius. The interval between the lower fixed point (0^oC) and the upper fixed point (100^oC) is 150 mm.

When the thermometer is in contact with an unknown liquid the interval between the lower fixed point and the head of the liquid column is 15 mm.

The temperature of the unknown liquid is:

Which of these can be used as a rectifier in electric circuits?

The image of an object produced by a diverging (concave) lens is always:

The acceleration due to gravity on earth is 10 ms⁻² while on the moon it is 1.6 ms⁻².

If a person whose weight on earth is 500 N goes to the moon.

His weight on the moon will be:

Which of the following is very important property for a liquid used in a liquid in glass thermometer?

Which statement is true for an intrinsic semiconductor?

Which of the following pairs of forces are both contact forces?

Water was fetched from a tap and heated till it boiled.

Which of the graphs in the figure represents the variation of temperature (Y) with time (X) for the water?

The unit of pressure is:

Birds can perch safely on high tension electric cables without being electrocuted because:

A machine raises a load of 600 N through a distance of 2.5 m when an effort of 100 N moves through a distance of 20 m.

The efficiency of this machine is:

If a particle experiences a deflection in a magnetic field, the particle is most likely:

Which of the following are both renewable energy sources?

Which of the following radioisotopes is used to monitor the functioning of the thyroid gland?

The unit of specific heat capacity is:

A current of 0.6 A flows through a point in a circuit for 5 minutes. The quantity of charge that has passed that point is:

We hear sound round corners because sound can be easily:

Cloud chamber tracks for alpha particles are thick and straight because alpha particles:

An object of mass 50 kg is pulled with a force of 100 N on a smooth runway.

It acceleration is:

Which of the graphs in the figure best represents the variation of count rate from a radioactive substance (Y) with time (X):

On a hydraulic jack a force of 60 N is applied on the smaller piston with area 0.05 m².

The force exerted on the larger piston with area 0.6 m² will be:

Which of the graphs in the figure best represents the variation of acceleration (Y) of a small ball dropped from the first floor of a storey building with time (X)?

An atom is represented by ¹⁷₈X. Which of the nuclides below is an isotope of this atom?

A transformer has 3000 turns in the primary coil and 500 turns in the secondary coil.

If the input voltage is 240 V, the output voltage is:

Which of these electromagnetic waves has the longest wavelength?

Water for tea is heated in a pot. Heat is transferred from the bottom of the pot into the pot by method of:

Total internal reflection can only occur when the:

The activity of a radioactive sample drops from 800 counts/seconds to 200 counts/second in 24 hours.

The half life of the sample is:

Which of the following materials can be used to make the needle of a navigating compass?

“The EMF is induced across a coil acts such as to oppose the change that produces it.”

This is a statement of:

The neutron to proton ratio for ¹³¹₅₄I

A freely suspended bar magnet comes to rest in an approximately north-south direction.

This shows that the:

Which graphs in the figure best represents the variation of pressure on an object immersed in a liquid(Y) and the depth of the object (X):

A body is said to be in mechanical equilibrium when the:

A soft magnetic material is one which:

A temperature of 27^oC converted to Kelvin gives:

The set up in the figure is used to study the relationship between current (I) and potential difference (V) for a wire X.

The ammeter is connected as shown because it has:

The set up in the figure is used to study the relationship between current (I) and potential difference (V) for a wire X.

If the material X is a copper wire, the relationship between V and I when the switch is closed at constant temperature is:

The set up in the figure is used to study the relationship between current (I) and potential difference (V) for a wire X.

The rheostat Y is used to:

The set up in the figure is used to study the relationship between current (I) and potential difference (V) for a wire X. The most likely shape of the graph of the potential difference (Y) against current (X) for the copper wire is:

The figure shows an arrangement which is used to investigate collisions between two trolleys.

Trolley AB is initially stationary and the end of Y of the is closer to trolley A.

The runway is inclined to:

The figure shows an arrangement which is used to investigate collisions between two trolleys. Trolley B is initially stationary and the end of Y of the tape is closer to trolley A.

A ticker tape produced from this experiment will likely be:

The figure shows an arrangement which is used to investigate collisions between two trolleys. Trolley B is initially stationary and the end of Y of the tape is closer to trolley A. The experiment could be used to verify the: