Question

what is known as Judicial review?

Answer 1

A court's authority to examine an executive or legislative act and to invalidate that act if it is contrary to constitutional principles. The power of courts of law to review the actions of the executive and legislative branches is called judiciary review.
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Answer 2

Judicial Review refers to the power of the judiciary to interpret the constitution and to declare any such law or order of the legislature and executive void, if it finds them in conflict the Constitution of India.