Faraday law of electrolysis indirectly shows

• quantisation of charge

• quantisation of angular momentum

• quantisation of current

• quantisation of viscosity

In old age arteries carrying blood in the human body become narrow resulting in an increase in the blood pressure. This follows from

• Pascal's law

• Stoke's law

• Bernoulli's principle

• Archimede's principle

In an adiabatic change , the pressure and temperature of a monoatomic gas are relted as P ∝ T^C, where C equals

• $\frac{2}{3}$

• $\frac{5}{2}$

• $\frac{3}{5}$

• $\frac{5}{3}$

14.

A large horizontal surface moves up and down in S.H.M with an amplitude of 1 cm. If  a mass of 10 kg ( which is placed on the surface) is to remain continuously in contact 

• 5 Hz

• 0.5 Hz

• 1.5 Hz

• 10 Hz

A siren emitting sound of frequency 800 Hz is going away from a static listener with a speed of 30 m/s. The frequency of sound heard by listener is ( velocity of sound = 300 m/s )

• 727.3 Hz

• 481.2 Hz

• 644.8 Hz

• 286.5 Hz

Which of the following physical quantities do not have same dimensions?

• pressure and stress

• tension and surface tension

• strain and angle

• energy and work

Work of 3.0 × 10^-4 joule is required to be done in increasing the size of a soap film from 10 cm ×  6 cm to 10 cm ×  11 cm. The surface tension of the film is

• 5 ×  10^-2 N/m

• 3 ×  10^-2 N/m

• 1.5 ×  10^-2 N/m

• 1.2 ×  10^-2 N/m

If the water falls from a dam into a turbine wheel 19.6 n below, then the velocity of water ar turbines  is ( Take g = 9.8 m/s )

• 9.8 m/s

• 19.6 m/s

• 39.2 m/s

• 98.6 m/s

Assertion: Ferro magnetic substances become paramagnetic above Curie temperature.

Reason: Domains are destroyed at high temperature.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false

Assertion:  A hollow metallic closed container maintained at a uniform temperature can act as a source of black body radiation. 

Reason:  All metals act as black bodies.

• If both assertion and reason are true and reason is the correct explanation of assertion 

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false