A semiconductor is formed by?

In order to view the sun, the most suitable instrument to use is?

An isotope has an initial activity of 120 Bq. 6 days later its activity is 15 Bq. The half-life is? 

The eclipse of the moon occurs when?

According to kinetic molecular model in gases,

A magnet relay is a device used for?

Water is not a good thermometric liquid because it?

What quantity of heat is required to convert 20 g of ice at 0 ºC to water at the same temperature? (Specific latent heat of ice = 336 Jg⁻¹)

Which of the following liquid is a poor conductor of electricity?

If an object just begins to slide on a surface inclined at 30º to the horizontal,the coefficient of friction is?

A cell whose internal resistance is 0.55Ω delivers a current of 4 A to an external resistor. The lost voltage of the cell is?

Which of these is a second-class lever?

In the formation of sea breeze, wind blows from?

A bar magnet is divided into two pieces, which of the following statement is correct?

The secondary pigments consist of?

A tuning fork having a frequency of 312 Hz emits a wave which has a wavelength of 1.10 m. Calculate the velocity of sound

When the plate area of a capacitor increases?

A car starts from rest and covers a distance of 40 m in 10 s. Calculate the magnitude of its acceleration

Which of these is a derived unit?

The amount of energy required to change a kilogram of ice block into water without a change in temperature is?

Consider the wave equation y = 5mm sin [1cm⁻¹x - 60s⁻¹t]. The wave number is?

For a pear-shaped conductor shown above, the concentration of charge on the outside is highest at?

An object 40 cm high is 30cm from the pin hole camera. If the height of the image formed is 20 cm. What is the distance of the image from the pin height?

A reservoir is filled with liquid of density 2000 kgm⁻¹. Calculate the depth at which the pressure in the liquid will be equal to 9100 Nm⁻² (g = 10 ms⁻²)

The mercury column in the barometer at notational  atmospheric pressure has a height of?

A bar magnet is placed near and lying along the axis of a solenoid connected to a galvanometer. The pointer of the galvanometer shows no deflection when?

One of the following is a scalar quantity?

The graph of pressure (P) against the reciprocal of the volume (I/V) in Boyles's law is a?

Which component of fiber-optic connector has a provision of entry for the fibre along with the fixation to connector housing?

A current of 0.5 A flows through a resistor when connected to a 40 V battery. How much energy is dispatched in 2 minutes?

Tyres are treaded to?

Which expression gives magnetic flux?

A train of mass 1600 kg attains a speed of 25 ms⁻¹ in 20 seconds. The power developed in the engine is?

The potential energy in an elastic string of force constant k, which has an extension X is?

The gravitational pull on the moon is 1/6 that of the earth. If a body weighs 6.0 N on the moon, what will be the weight on the earth?

The relationship between the coefficient of linear expansion \( \alpha \) and volumetric expansion \( \gamma \) is:

Which of the following is not a consequence of hydrogen bubbles covering the copper plate of a primary cell?

The vapour pressure?

A person standing waist-deep in a swimming pool appears to have short legs because of light?

The main factor which affects the speed of sound wave is the?