TN 12TH PHYSICS - Online Test
Q1. Suppose an alpha particle accelerated by a potential of V volt is allowed to collide with a nucleus whose atomic number is Z, then the distance of closest approach of alpha particle to the nucleus is
Answer : Option A
Explaination / Solution:
When
alpha particle is accelerated at the potential V;
K.E
= 2eV
Q2. The magnetic field at the
center O of the following current loop is
Answer : Option A
Explaination / Solution:
Q3. The barrier potential of a silicon diode is approximately,
Answer : Option A
Explaination / Solution:
No Explaination.
Q4. An electron moves on a
straight line path XY as shown in the figure. The coil abcd is adjacent
to the path of the electron. What will be the direction of current, if any,
induced in the coil?
Answer : Option A
Explaination / Solution:
Q5. The particle size of ZnO material is 30 nm. Based on the dimension it is classified as
Answer : Option B
Explaination / Solution:
No Explaination.
Q6. The dimension of 1/µ0ε0
is
Answer : Option B
Explaination / Solution:
Q7. Bauxite has the composition
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. An aqueous solution of borax is
Answer : Option C
Explaination / Solution:
Q9. Which is true regarding nitrogen?
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. Which of the following d block element has half filled penultimate d sub shell as well as half filled valence sub shell?
Answer : Option A
Explaination / Solution:
Cr ⇒ [Ar] 3d5 4s1
