A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be

Physics
A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be

P

< P

> P

2P

P

< P

> P

2P

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Physics
A radioactive substance does not undergo any change (in mass or charge) during

Oxidation

Beta-emission

Gamma-emission

Alpha-emission

Oxidation

Beta-emission

Gamma-emission

Alpha-emission

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Physics
The strength of an electromagnet can be increased by

Increasing the length of the coiled wire

Increasing current supply

Increasing the number of turns

All of these

Increasing the length of the coiled wire

Increasing current supply

Increasing the number of turns

All of these

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Physics
For Gamma radiation, what stops its penetrating abilities?

Concrete

All of these

Lead

Steal

Concrete

All of these

Lead

Steal

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Physics
The apparent weight of a man in a lift is less the real weight when :

The lift is going down with uniform speed

The lift is going down with an acceleration

The lift is going up with uniform speed

The lift is going up with an acceleration

The lift is going down with uniform speed

The lift is going down with an acceleration

The lift is going up with uniform speed

The lift is going up with an acceleration

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Physics
Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open

in an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level

at a place in a valley below sea level

at sea level

at the top of Mt. Everest

in an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level

at a place in a valley below sea level

at sea level

at the top of Mt. Everest

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Physics

Physics A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be

Physics A radioactive substance does not undergo any change (in mass or charge) during

Physics The strength of an electromagnet can be increased by

Physics For Gamma radiation, what stops its penetrating abilities?

Physics The apparent weight of a man in a lift is less the real weight when :

Physics Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open

Physics
A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be

Physics
A radioactive substance does not undergo any change (in mass or charge) during

Physics
The strength of an electromagnet can be increased by

Physics
For Gamma radiation, what stops its penetrating abilities?

Physics
The apparent weight of a man in a lift is less the real weight when :

Physics
Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open