Q. Radioactivity was discovered by

रेडियोधर्मिता की खोज किसके द्वारा की गई थी?

A
Marie Curie
मैरी क्यूरी
B
Henri Becquerel
हेनरी बेकरेल
C
Ernest Rutherford
अर्नेस्ट रदरफोर्ड
D
Wilhelm Röntgen
विल्हेम रॉन्टगन

Explanation

Henri Becquerel discovered radioactivity in 1896 while studying uranium salts and their emission of rays, which could expose photographic plates even without light.

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