The mass of a ⁷₃ Li nucleus is 0.042 u less than the sum of the masses of all its nucleons
The mass of a ⁷₃ Li nucleus is 0.042 u less than the sum of the masses of all its nucleons. The binding energy per nucleon of ⁷₃ Li nucleus is nearly
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AIPMT2010
The energy of a hydrogen atom in the ground state is – 13.6 eV. The energy of a He⁺ ion
The energy of a hydrogen atom in the ground state is -13.6 eV. The energy of a He⁺ ion in the first excited state will be
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(a) – 13.6 eV (b) – […]
An alpha nucleus of energy 1/2 mv² bombards a heavy nuclear target of charge Ze
An alpha nucleus of energy 1/2 mv² bombards a heavy nuclear target of charge Ze. Then the distance of closest approach for the alpha nucleus will be proportional to
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(a) 1 / […]
A 220 volts input is supplied to a transformer. The output circuit draws
A 220 volts input is supplied to a transformer. The output circuit draws a current of 2.0 ampere at 440 volts. If the efficiency of the transformers is 80%, the current drawn by the primary […]
An engine pumps water through a hose pipe. Water passes through the pipe
An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of 2 m/s. The mass per unit length of water in the pipe is 100 kg/m. […]
A ball moving with velocity 2 m/s collides head on with another stationary ball
A ball moving with velocity 2 m/s collides head on with another stationary ball of double the mass. If the coefficient of restitution is 0.5, then their velocities (in m/s) after collision will be:
A man of 50 kg mass is standing in a gravity free space at a height
A man of 50 kg mass is standing in a gravity free space at a height of 10 m above the floor. He throws a stoneof 0.5 kg mass downwards with a speed 2 m/s. […]
A ball is dropped from a high rise platform at t = 0 starting from rest
A ball is dropped from a high rise platform at t = 0 starting from rest. After 6 seconds another ball is thrown downwards from the same platform with a speed v.The two balls meet […]
A particle moves a distance x in time t according to equation x = (t + 5)⁻¹
A particle moves a distance x in time t according to equation x = (t + 5)⁻¹. The acceleration of particle is proportional to
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(a) (velocity)^3/2 (b) (distance)^2 (c) (distance) ^ –2 […]
Algae have cell wall made up of
Algae have cell wall made up of
Options
(a) cellulose,galactans and mannas (b) hemicellulose,pectins and proteins (c) pectins, cellulose and proteins (d) cellulise,hemicellulose and pectins
Correct Answer:
cellulose,galactans and mannas
Explanation:
Algae possess a […]